示例：为 IS-IS 协议配置备份选择策略
此示例说明了如何为 IS-IS 协议配置备份选择策略。
启用备份选择策略后，Junos OS 允许根据网络中链路和节点的策略规则和属性选择 LFA。这些属性包括 admin-group、srlg、bandwidth、protection-type、metric、neighbor 和 neighbor-tag。
要求
此示例使用以下硬件和软件组件：
八台路由器，可以组合为边缘路由器和核心路由器。
在所有设备上运行 Junos OS。
开始之前：
配置设备接口。
配置 IS-IS。
概述
可以使用 LFA 策略覆盖默认的无环路备选 （LFA） 选择算法或条件。这些策略是为每个目标（IPv4 和 IPv6）和一个主下一跃点接口配置的。这些备份策略根据备份路径的管理员组、srlg、带宽、保护类型、度量、邻居和邻居标记属性实施 LFA 选择。在备份最短路径优先 （SPF） 计算期间，IGP 会累加每个备份下一跃点存储的备份路径的每个属性（节点和链路）。对于 IGP 内部创建的路由，系统会根据为每个目标（IPv4 和 IPv6）和主下一跳接口配置的策略来评估每个备份路径的属性集。第一个或最佳备份路径将被选中并安装为路由表中的备份下一跃点。要配置备份选择策略，请在层次结构级别包含 backup-selection [edit routing-options] configuration 语句。该 show backup-selection 命令显示为给定接口和目标配置的策略。可以根据特定目标、前缀、接口或逻辑系统筛选显示。
拓扑学
在此拓扑中，备份选择策略配置在设备 R3 上。
图 1：备份选择路径
配置
CLI 快速配置
要快速配置此示例，请复制以下命令，将其粘贴到文本文件中，删除所有换行符，更改详细信息，以便与网络配置匹配，然后将命令复制并粘贴到层次结构级别的 [edit] CLI 中。
R0
set interfaces ge-4/0/1 unit 0 family inet address 100.0.1.1/24 set interfaces ge-4/0/1 unit 0 family iso set interfaces ge-4/0/1 unit 0 family inet6 address 2001:100:0:1::1/64 set interfaces ge-4/0/1 unit 0 family mpls set interfaces ge-0/2/1 unit 0 family inet address 100.0.4.1/24 set interfaces ge-0/2/1 unit 0 family iso set interfaces ge-0/2/1 unit 0 family inet6 address 2001:100:0:4::1/64 set interfaces ge-0/2/1 unit 0 family mpls set interfaces ge-1/3/1 unit 0 family inet address 100.0.5.1/24 set interfaces ge-1/3/1 unit 0 family iso set interfaces ge-1/3/1 unit 0 family inet6 address 2001:100:0:5::1/64 set interfaces ge-1/3/1 unit 0 family mpls set interfaces ge-1/3/0 unit 0 family inet address 100.0.6.1/24 set interfaces ge-1/3/0 unit 0 family iso set interfaces ge-1/3/0 unit 0 family inet6 address 2001:100:0:6::1/64 set interfaces ge-1/3/0 unit 0 family mpls set interfaces ge-0/2/7 unit 0 family inet address 100.0.7.1/24 set interfaces ge-0/2/7 unit 0 family iso set interfaces ge-0/2/7 unit 0 family inet6 address 2001:100:0:7::1/64 set interfaces ge-0/2/7 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.146/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1001.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:146/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols isis interface ge-4/0/1 level 2 metric 10 set protocols isis interface ge-0/2/1 level 2 metric 18 set protocols isis interface ge-1/3/1 level 2 metric 51 set protocols isis interface ge-1/3/0 level 2 metric 52 set protocols isis interface ge-0/2/7 level 2 metric 23 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
R1
set interfaces ge-0/1/2 unit 0 family inet address 100.0.1.2/24 set interfaces ge-0/1/2 unit 0 family iso set interfaces ge-0/1/2 unit 0 family inet6 address 2001:100:0:1::2/64 set interfaces ge-0/1/2 unit 0 family mpls set interfaces ge-3/0/1 unit 0 family inet address 100.1.2.1/24 set interfaces ge-3/0/1 unit 0 family iso set interfaces ge-3/0/1 unit 0 family inet6 address 2001:100:1:2::1/64 set interfaces ge-3/0/1 unit 0 family mpls set interfaces ge-3/1/1 unit 0 family inet address 100.1.4.1/24 set interfaces ge-3/1/1 unit 0 family iso set interfaces ge-3/1/1 unit 0 family inet6 address 2001:100:1:4::1/64 set interfaces ge-3/1/1 unit 0 family mpls set interfaces ge-3/0/2 unit 0 family inet address 100.1.7.1/24 set interfaces ge-3/0/2 unit 0 family iso set interfaces ge-3/0/2 unit 0 family inet6 address 2001:100:1:7::1/64 set interfaces ge-3/0/2 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.156/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1002.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:156/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-0/1/2 srlg srlg9 set protocols mpls interface ge-0/1/2 admin-group c1 set protocols mpls interface ge-0/1/2 admin-group c2 set protocols mpls interface ge-0/1/2 admin-group c6 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
R2
set interfaces ge-1/3/3 unit 0 family inet address 100.1.2.2/24 set interfaces ge-1/3/3 unit 0 family iso set interfaces ge-1/3/3 unit 0 family inet6 address 2001:100:1:2::2/64 set interfaces ge-1/3/3 unit 0 family mpls set interfaces ge-1/0/2 unit 0 family inet address 100.2.3.1/24 set interfaces ge-1/0/2 unit 0 family iso set interfaces ge-1/0/2 unit 0 family inet6 address 2001:100:2:3::1/64 set interfaces ge-1/0/2 unit 0 family mpls set interfaces ge-1/2/5 unit 0 family inet address 100.2.4.1/24 set interfaces ge-1/2/5 unit 0 family iso set interfaces ge-1/2/5 unit 0 family inet6 address 2001:100:2:4::1/64 set interfaces ge-1/2/5 unit 0 family mpls set interfaces ge-1/3/9 unit 0 family inet address 100.2.5.1/24 set interfaces ge-1/3/9 unit 0 family iso set interfaces ge-1/3/9 unit 0 family inet6 address 2001:100:2:5::1/64 set interfaces ge-2/3/1 unit 0 family inet address 100.2.6.1/24 set interfaces ge-2/3/1 unit 0 family iso set interfaces ge-2/3/1 unit 0 family inet6 address 2001:100:2:6::1/64 set interfaces ge-2/3/1 unit 0 family mpls set interfaces ge-1/0/8 unit 0 family inet address 100.2.7.1/24 set interfaces ge-1/0/8 unit 0 family iso set interfaces ge-1/0/8 unit 0 family inet6 address 2001:100:2:7::1/64 set interfaces ge-1/0/8 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.178/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1003.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:178/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-1/0/2 srlg srlg1 set protocols mpls interface ge-1/3/9 srlg srlg1 set protocols mpls interface ge-1/3/9 srlg srlg2 set protocols mpls interface ge-2/3/1 srlg srlg1 set protocols mpls interface ge-1/0/8 srlg srlg7 set protocols isis interface ge-1/0/2 link-protection set protocols isis interface ge-1/2/5 level 2 metric 12 set protocols isis interface ge-2/3/1 level 2 metric 12 set protocols isis interface ge-1/0/8 level 2 metric 13 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
R3
set interfaces ge-1/3/5 unit 0 family inet address 100.2.3.2/24 set interfaces ge-1/3/5 unit 0 family iso set interfaces ge-1/3/5 unit 0 family inet6 address 2001:100:2:3::2/64 set interfaces ge-1/3/5 unit 0 family mpls set interfaces ge-0/3/1 unit 0 family inet address 100.3.4.1/24 set interfaces ge-0/3/1 unit 0 family iso set interfaces ge-0/3/1 unit 0 family inet6 address 2001:100:3:4::1/64 set interfaces ge-0/3/1 unit 0 family mpls set interfaces ge-0/3/6 unit 0 family inet address 100.3.5.1/24 set interfaces ge-0/3/6 unit 0 family iso set interfaces ge-0/3/6 unit 0 family inet6 address 2001:100:3:5::1/64 set interfaces ge-0/3/6 unit 0 family mpls set interfaces ge-2/0/4 unit 0 family inet address 100.3.6.1/24 set interfaces ge-2/0/4 unit 0 family iso set interfaces ge-2/0/4 unit 0 family inet6 address 2001:100:3:6::1/64 set interfaces ge-2/0/4 unit 0 family mpls set interfaces ge-1/1/0 unit 0 family inet address 100.3.7.1/24 set interfaces ge-1/1/0 unit 0 family iso set interfaces ge-1/1/0 unit 0 family inet6 address 2001:100:3:7::1/64 set interfaces ge-1/1/0 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.128/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1004.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:128/128 set interfaces lo0 unit 0 family mpls set policy-options policy-statement ecmp term 1 then load-balance per-packet set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-0/3/1 srlg srlg1 set protocols mpls interface ge-0/3/1 srlg srlg2 set protocols mpls interface ge-0/3/1 admin-group c1 set protocols mpls interface ge-0/3/1 admin-group c2 set protocols mpls interface ge-0/3/1 admin-group c3 set protocols mpls interface ge-0/3/1 admin-group c5 set protocols mpls interface ge-0/3/6 admin-group c1 set protocols mpls interface ge-0/3/6 admin-group c2 set protocols mpls interface ge-2/0/4 admin-group c1 set protocols mpls interface ge-2/0/4 admin-group c2 set protocols mpls interface ge-2/0/4 admin-group c5 set protocols mpls interface ge-1/1/0 admin-group c2 set protocols mpls interface ge-1/1/0 admin-group c12 set protocols isis interface ge-1/3/5 link-protection set protocols isis interface ge-0/3/1 level 2 metric 21 set protocols isis interface ge-0/3/6 level 2 metric 13 set protocols isis interface ge-2/0/4 level 2 metric 15 set protocols isis interface ge-1/1/0 level 2 metric 22 set protocols isis interface all level 2 metric 10 set routing-options forwarding-table export ecmp set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112 set routing-options backup-selection destination 0.0.0.0/0 interface all admin-group include-all c1 set routing-options backup-selection destination 0.0.0.0/0 interface all admin-group include-any c2 set routing-options backup-selection destination 0.0.0.0/0 interface all admin-group preference c3 set routing-options backup-selection destination 0.0.0.0/0 interface all srlg loose set routing-options backup-selection destination 0.0.0.0/0 interface all downstream-paths-only set routing-options backup-selection destination 0.0.0.0/0 interface all bandwidth-greater-equal-primary set routing-options backup-selection destination 0.0.0.0/0 interface all neighbor preference 10.255.102.178 set routing-options backup-selection destination 0.0.0.0/0 interface all neighbor-tag preference 1004 set routing-options backup-selection destination 0.0.0.0/0 interface all metric-order dest set routing-options backup-selection destination 0.0.0.0/0 interface all evaluation-order admin-group set routing-options backup-selection destination 0.0.0.0/0 interface all evaluation-order srlg set routing-options backup-selection destination 0.0.0.0/0 interface all evaluation-order bandwidth set routing-options backup-selection destination 100.0.1.0/24 interface all srlg strict set routing-options backup-selection destination 100.0.1.0/24 interface all bandwidth-greater-equal-primary set routing-options backup-selection destination 100.0.7.0/24 interface all srlg strict
R4
set interfaces ge-2/1/7 unit 0 family inet address 100.0.4.2/24 set interfaces ge-2/1/7 unit 0 family iso set interfaces ge-2/1/7 unit 0 family inet6 address 2001:100:0:4::2/64 set interfaces ge-2/1/7 unit 0 family mpls set interfaces ge-2/1/5 unit 0 family inet address 100.1.4.2/24 set interfaces ge-2/1/5 unit 0 family iso set interfaces ge-2/1/5 unit 0 family inet6 address 2001:100:1:4::2/64 set interfaces ge-2/1/5 unit 0 family mpls set interfaces ge-8/0/0 unit 0 family inet address 100.2.4.2/24 set interfaces ge-8/0/0 unit 0 family iso set interfaces ge-8/0/0 unit 0 family inet6 address 2001:100:2:4::2/64 set interfaces ge-8/0/0 unit 0 family mpls set interfaces ge-2/2/0 unit 0 family inet address 100.3.4.2/24 set interfaces ge-2/2/0 unit 0 family iso set interfaces ge-2/2/0 unit 0 family inet6 address 2001:100:3:4::2/64 set interfaces ge-2/2/0 unit 0 family mpls set interfaces ge-2/2/3 unit 0 family inet address 100.4.5.1/24 set interfaces ge-2/2/3 unit 0 family iso set interfaces ge-2/2/3 unit 0 family inet6 address 2001:100:4:5::1/64 set interfaces ge-2/2/3 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.172/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1005.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:172/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-2/1/7 srlg srlg1 set protocols mpls interface ge-2/1/7 srlg srlg2 set protocols mpls interface ge-2/1/7 srlg srlg3 set protocols mpls interface ge-2/1/7 admin-group c1 set protocols mpls interface ge-2/1/7 admin-group c2 set protocols mpls interface ge-2/1/7 admin-group c6 set protocols mpls interface ge-2/1/7 admin-group c13 set protocols isis interface ge-2/1/7 level 2 metric 18 set protocols isis interface ge-8/0/0 level 2 metric 12 set protocols isis interface ge-2/2/0 level 2 metric 21 set protocols isis interface ge-2/2/3 level 2 metric 10 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
R5
set interfaces ge-3/0/1 unit 0 family inet address 100.0.5.2/24 set interfaces ge-3/0/1 unit 0 family iso set interfaces ge-3/0/1 unit 0 family inet6 address 2001:100:0:5::2/64 set interfaces ge-3/0/1 unit 0 family mpls set interfaces ge-3/2/4 unit 0 family inet address 100.2.5.2/24 set interfaces ge-3/2/4 unit 0 family iso set interfaces ge-3/2/4 unit 0 family inet6 address 2001:100:2:5::2/64 set interfaces ge-3/2/4 unit 0 family mpls set interfaces ge-0/1/5 unit 0 family inet address 100.3.5.2/24 set interfaces ge-0/1/5 unit 0 family iso set interfaces ge-0/1/5 unit 0 family inet6 address 2001:100:3:5::2/64 set interfaces ge-0/1/5 unit 0 family mpls set interfaces ge-3/1/0 unit 0 family inet address 100.4.5.2/24 set interfaces ge-3/1/0 unit 0 family iso set interfaces ge-3/1/0 unit 0 family inet6 address 2001:100:4:5::2/64 set interfaces ge-3/1/0 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.166/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1006.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:166/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-3/1/0 admin-group c1 set protocols mpls interface ge-3/1/0 admin-group c2 set protocols mpls interface ge-3/1/0 admin-group c4 set protocols mpls interface ge-3/0/1 srlg srlg3 set protocols mpls interface ge-3/0/1 srlg srlg4 set protocols isis interface ge-3/0/1 level 2 metric 51 set protocols isis interface ge-0/1/5 level 2 metric 13 set protocols isis interface ge-3/1/0 level 2 metric 10 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
R6
set interfaces ge-0/0/6 unit 0 family inet address 100.0.6.2/24 set interfaces ge-0/0/6 unit 0 family iso set interfaces ge-0/0/6 unit 0 family inet6 address 2001:100:0:6::2/64 set interfaces ge-0/0/6 unit 0 family mpls set interfaces ge-3/0/1 unit 0 family inet address 100.2.6.2/24 set interfaces ge-3/0/1 unit 0 family iso set interfaces ge-3/0/1 unit 0 family inet6 address 2001:100:2:6::2/64 set interfaces ge-3/0/1 unit 0 family mpls set interfaces ge-0/0/4 unit 0 family inet address 100.3.6.2/24 set interfaces ge-0/0/4 unit 0 family iso set interfaces ge-0/0/4 unit 0 family inet6 address 2001:100:3:6::2/64 set interfaces ge-0/0/4 unit 0 family mpls set interfaces ge-2/0/1 unit 0 family inet address 100.6.7.1/24 set interfaces ge-2/0/1 unit 0 family iso set interfaces ge-2/0/1 unit 0 family inet6 address 2001:100:6:7::1/64 set interfaces ge-2/0/1 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.154/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1007.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:154/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-2/0/1 srlg srlg2 set protocols mpls interface ge-2/0/1 srlg srlg3 set protocols mpls interface ge-2/0/1 srlg srlg4 set protocols mpls interface ge-2/0/1 srlg srlg5 set protocols mpls interface ge-2/0/1 admin-group c1 set protocols mpls interface ge-2/0/1 admin-group c2 set protocols mpls interface ge-2/0/1 admin-group c5 set protocols mpls interface ge-2/0/1 admin-group c11 set protocols isis interface ge-0/0/6 level 2 metric 52 set protocols isis interface ge-3/0/1 level 2 metric 12 set protocols isis interface ge-0/0/4 level 2 metric 15 set protocols isis interface ge-2/0/1 level 2 metric 10 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
R7
set interfaces ge-2/1/0 unit 0 family inet address 100.0.7.2/24 set interfaces ge-2/1/0 unit 0 family iso set interfaces ge-2/1/0 unit 0 family inet6 address 2001:100:0:7::2/64 set interfaces ge-2/1/0 unit 0 family mpls set interfaces ge-2/3/9 unit 0 family inet address 100.1.7.2/24 set interfaces ge-2/3/9 unit 0 family iso set interfaces ge-2/3/9 unit 0 family inet6 address 2001:100:1:7::2/64 set interfaces ge-2/3/9 unit 0 family mpls set interfaces ge-2/1/7 unit 0 family inet address 100.2.7.2/24 set interfaces ge-2/1/7 unit 0 family iso set interfaces ge-2/1/7 unit 0 family inet6 address 2001:100:2:7::2/64 set interfaces ge-2/1/7 unit 0 family mpls set interfaces ge-2/2/2 unit 0 family inet address 100.3.7.2/24 set interfaces ge-2/2/2 unit 0 family iso set interfaces ge-2/2/2 unit 0 family inet6 address 2001:100:3:7::2/64 set interfaces ge-2/2/2 unit 0 family mpls set interfaces ge-2/3/0 unit 0 family inet address 100.6.7.2/24 set interfaces ge-2/3/0 unit 0 family iso set interfaces ge-2/3/0 unit 0 family inet6 address 2001:100:6:7::2/64 set interfaces ge-2/3/0 unit 0 family mpls set interfaces lo0 unit 0 family inet address 10.255.102.180/32 set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1008.00 set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:180/128 set interfaces lo0 unit 0 family mpls set protocols rsvp interface all set protocols mpls admin-groups c0 0 set protocols mpls admin-groups c1 1 set protocols mpls admin-groups c2 2 set protocols mpls admin-groups c3 3 set protocols mpls admin-groups c4 4 set protocols mpls admin-groups c5 5 set protocols mpls admin-groups c6 6 set protocols mpls admin-groups c7 7 set protocols mpls admin-groups c8 8 set protocols mpls admin-groups c9 9 set protocols mpls admin-groups c10 10 set protocols mpls admin-groups c11 11 set protocols mpls admin-groups c12 12 set protocols mpls admin-groups c13 13 set protocols mpls admin-groups c14 14 set protocols mpls admin-groups c15 15 set protocols mpls admin-groups c16 16 set protocols mpls admin-groups c17 17 set protocols mpls admin-groups c18 18 set protocols mpls admin-groups c19 19 set protocols mpls admin-groups c20 20 set protocols mpls admin-groups c21 21 set protocols mpls admin-groups c22 22 set protocols mpls admin-groups c23 23 set protocols mpls admin-groups c24 24 set protocols mpls admin-groups c25 25 set protocols mpls admin-groups c26 26 set protocols mpls admin-groups c27 27 set protocols mpls admin-groups c28 28 set protocols mpls admin-groups c29 29 set protocols mpls admin-groups c30 30 set protocols mpls admin-groups c31 31 set protocols mpls interface all set protocols mpls interface ge-2/3/9 srlg srlg8 set protocols mpls interface ge-2/3/9 admin-group c1 set protocols mpls interface ge-2/3/9 admin-group c2 set protocols mpls interface ge-2/3/9 admin-group c7 set protocols isis interface ge-2/1/0 level 2 metric 23 set protocols isis interface ge-2/1/7 level 2 metric 13 set protocols isis interface ge-2/2/2 level 2 metric 22 set protocols isis interface all level 2 metric 10 set routing-options srlg srlg1 srlg-value 101 set routing-options srlg srlg2 srlg-value 102 set routing-options srlg srlg3 srlg-value 103 set routing-options srlg srlg4 srlg-value 104 set routing-options srlg srlg5 srlg-value 105 set routing-options srlg srlg6 srlg-value 106 set routing-options srlg srlg7 srlg-value 107 set routing-options srlg srlg8 srlg-value 108 set routing-options srlg srlg9 srlg-value 109 set routing-options srlg srlg10 srlg-value 110 set routing-options srlg srlg11 srlg-value 111 set routing-options srlg srlg12 srlg-value 112
配置设备 R3
分步程序
下面的示例要求您在各个配置层级中进行导航。有关导航CLI的信息，请参阅《Junos OS CLI 用户指南》中的在配置模式下使用CLI编辑器。
要配置设备 R3：
配置接口。
[edit interfaces] user@R3# set ge-1/3/5 unit 0 family inet address 100.2.3.2/24 user@R3# set ge-1/3/5 unit 0 family iso user@R3# set ge-1/3/5 unit 0 family inet6 address 2001:100:2:3::2/64 user@R3# set ge-1/3/5 unit 0 family mpls user@R3# set ge-0/3/1 unit 0 family inet address 100.3.4.1/24 user@R3# set ge-0/3/1 unit 0 family iso user@R3# set ge-0/3/1 unit 0 family inet6 address 2001:100:3:4::1/64 user@R3# set ge-0/3/1 unit 0 family mpls user@R3# set ge-0/3/6 unit 0 family inet address 100.3.5.1/24 user@R3# set ge-0/3/6 unit 0 family iso user@R3# set ge-0/3/6 unit 0 family inet6 address 2001:100:3:5::1/64 user@R3# set ge-0/3/6 unit 0 family mpls user@R3# set ge-2/0/4 unit 0 family inet address 100.3.6.1/24 user@R3# set ge-2/0/4 unit 0 family iso user@R3# set ge-2/0/4 unit 0 family inet6 address 2001:100:3:6::1/64 user@R3# set ge-2/0/4 unit 0 family mpls user@R3# set ge-1/1/0 unit 0 family inet address 100.3.7.1/24 user@R3# set ge-1/1/0 unit 0 family iso user@R3# set ge-1/1/0 unit 0 family inet6 address 2001:100:3:7::1/64 user@R3# set ge-1/1/0 unit 0 family mpls user@R3# set interfaces lo0 unit 0 family inet address 10.255.102.128/32 user@R3# set interfaces lo0 unit 0 family iso address 49.0001.0010.0100.1004.00 user@R3# set interfaces lo0 unit 0 family inet6 address abcd::10:255:102:128/128 user@R3# set interfaces lo0 unit 0 family mpls
配置路由策略。
[edit policy-options] user@R3#set policy-statement ecmp term 1 then load-balance per-packet
在所有接口上启用 RSVP。
[edit protocols] user@R3# set rsvp interface all
配置管理组。
[edit protocols mpls] user@R3# set admin-groups c0 0 user@R3# set admin-groups c1 1 user@R3# set admin-groups c2 2 user@R3# set admin-groups c3 3 user@R3# set admin-groups c4 4 user@R3# set admin-groups c5 5 user@R3# set admin-groups c6 6 user@R3# set admin-groups c7 7 user@R3# set admin-groups c8 8 user@R3# set admin-groups c9 9 user@R3# set admin-groups c10 10 user@R3# set admin-groups c11 11 user@R3# set admin-groups c12 12 user@R3# set admin-groups c13 13 user@R3# set admin-groups c14 14 user@R3# set admin-groups c15 15 user@R3# set admin-groups c16 16 user@R3# set admin-groups c16 16 user@R3# set admin-groups c17 17 user@R3# set admin-groups c18 18 user@R3# set admin-groups c19 19 user@R3# set admin-groups c20 20 user@R3# set admin-groups c21 21 user@R3# set admin-groups c22 22 user@R3# set admin-groups c23 23 user@R3# set admin-groups c24 24 user@R3# set admin-groups c25 25 user@R3# set admin-groups c26 26 user@R3# set admin-groups c27 27 user@R3# set admin-groups c28 28 user@R3# set admin-groups c29 29 user@R3# set admin-groups c30 30 user@R3# set admin-groups c31 31
配置 srlg 值。
[edit routing-options] user@R3# set srlg srlg1 srlg-value 101 user@R3# set srlg srlg2 srlg-value 102 user@R3# set srlg srlg3 srlg-value 103 user@R3# set srlg srlg4 srlg-value 104 user@R3# set srlg srlg5 srlg-value 105 user@R3# set srlg srlg6 srlg-value 106 user@R3# set srlg srlg7 srlg-value 107 user@R3# set srlg srlg8 srlg-value 108 user@R3# set srlg srlg9 srlg-value 109 user@R3# set srlg srlg10 srlg-value 110 user@R3# set srlg srlg11 srlg-value 111 user@R3# set srlg srlg12 srlg-value 112
在所有接口上启用 MPLS。
[edit protocols mpls] user@R3# set interface all
在接口上配置 srlg。
[edit protocols mpls] user@R3# set interface ge-0/3/1 srlg srlg1 user@R3# set interface ge-0/3/1 srlg srlg2
在接口上配置管理组。
[edit protocols mpls] user@R3# set interface ge-0/3/1 admin-group c1 user@R3# set interface ge-0/3/1 admin-group c2 user@R3# set interface ge-0/3/1 admin-group c3 user@R3# set interface ge-0/3/1 admin-group c5 user@R3# set interface ge-0/3/6 admin-group c1 user@R3# set interface ge-0/3/6 admin-group c2 user@R3# set interface ge-2/0/4 admin-group c1 user@R3# set interface ge-2/0/4 admin-group c2 user@R3# set interface ge-2/0/4 admin-group c5 user@R3# set interface ge-1/1/0 admin-group c2 user@R3# set interface ge-1/1/0 admin-group c12
在接口上启用链路保护并配置度量值。
[edit protocols] user@R3# set isis interface ge-1/3/5 link-protection user@R3# set isis interface ge-0/3/1 level 2 metric 21 user@R3# set isis interface ge-0/3/6 level 2 metric 13 user@R3# set isis interface ge-2/0/4 level 2 metric 15 user@R3# set isis interface ge-1/1/0 level 2 metric 22
在所有接口上配置度量值。
[edit protocols] user@R3# set isis interface all level 2 metric 10
将路由策略应用于从路由表导出到转发表的所有等价多路径。
[edit routing-options] user@R3# set forwarding-table export ecmp
配置备份选择策略的属性。
[edit routing-options] user@R3# set backup-selection destination 0.0.0.0/0 interface all admin-group include-all c1 user@R3# set backup-selection destination 0.0.0.0/0 interface all admin-group include-any c2 user@R3# set backup-selection destination 0.0.0.0/0 interface all admin-group preference c3 user@R3# set backup-selection destination 0.0.0.0/0 interface all srlg loose user@R3# set backup-selection destination 0.0.0.0/0 interface all downstream-paths-only user@R3# set backup-selection destination 0.0.0.0/0 interface all bandwidth-greater-equal-primary user@R3# set backup-selection destination 0.0.0.0/0 interface all neighbor preference 10.255.102.178 user@R3# set backup-selection destination 0.0.0.0/0 interface all neighbor-tag preference 1004 user@R3# set backup-selection destination 0.0.0.0/0 interface all metric-order dest user@R3# set backup-selection destination 0.0.0.0/0 interface all evaluation-order admin-group user@R3# set backup-selection destination 0.0.0.0/0 interface all evaluation-order srlg user@R3# set backup-selection destination 0.0.0.0/0 interface all evaluation-order bandwidth user@R3# set backup-selection destination 100.0.1.0/24 interface all srlg strict user@R3# set backup-selection destination 100.0.1.0/24 interface all bandwidth-greater-equal-primary user@R3# set backup-selection destination 100.0.7.0/24 interface all srlg strict
结果
在配置模式下，输入 show interfaces、 show protocols和 show routing-options 命令以确认您的配置。如果输出未显示预期的配置，请重复此示例中的说明以更正配置。
user@R3# show interfaces
ge-1/3/5 {
unit 0 {
family inet {
address 100.2.3.2/24;
}
family iso;
family inet6 {
address 2001:100:2:3::2/64;
}
family mpls;
}
}
ge-0/3/1 {
unit 0 {
family inet {
address 100.3.4.1/24;
}
family iso;
family inet6{
address 2001:100:3:4::1/64;
}
family mpls;
}
}
ge-0/3/6 {
unit 0 {
family inet {
address 100.3.5.1/24;
}
family iso;
family inet6{
address 2001:100:3:5::1/64;
}
family mpls;
}
}
ge-2/0/4 {
unit 0 {
family inet {
address 100.3.6.1/24;
}
family iso;
family inet6{
address 2001:100:3:6::1/64;
}
family mpls;
}
}
ge-1/1/0 {
unit 0 {
family inet {
address 100.3.7.1/24;
}
family iso;
family inet6{
address 2001:100:3:7::1/64;
}
family mpls;
}
}
lo0 {
unit 0 {
family inet {
address 10.255.102.128/32;
}
family iso {
address 49.0001.0010.0100.1004.00;
}
family inet6{
address abcd::10:255:102:128/128;
}
family mpls;
}
}
user@R3# show protocols
rsvp {
interface all;
}
mpls {
admin-groups {
c0 0;
c1 1;
c2 2;
c3 3;
c4 4;
c5 5;
c6 6;
c7 7;
c8 8;
c9 9;
c10 10;
c11 11;
c12 12;
c13 13;
c14 14;
c15 15;
c16 16;
c17 17;
c18 18;
c19 19;
c20 20;
c21 21;
c22 22;
c23 23;
c24 24;
c25 25;
c26 26;
c27 27;
c28 28;
c29 29;
c30 30;
c31 31;
}
interface all;
interface ge-0/3/1 {
srlg [ srlg1 srlg2 ];
admin-group [ c1 c2 c3 c5 ];
}
interface ge-0/3/6 {
admin-group [ c1 c2 ];
}
interface ge-2/0/4 {
admin-group [ c1 c2 c5 ];
}
interface ge-1/1/0 {
admin-group [ c2 c12 ];
}
isis {
interface ge-1/3/5 {
link-protection;
}
interface ge-0/3/1 {
level 2 metric 21;
}
interface ge-0/3/6 {
level 2 metric 13;
}
interface ge-2/0/4 {
level 2 metric 15;
}
interface ge-1/1/0 {
level 2 metric 22;
}
interface all {
level 2 metric 10;
}
}
user@R3# show routing-options
srlg {
srlg1 {
srlg-value 101;
}
srlg2 {
srlg-value 102;
}
srlg3 {
srlg-value 103;
}
srlg4 {
srlg-value 104;
}
srlg5 {
srlg-value 105;
}
srlg6 {
srlg-value 106;
}
srlg7 {
srlg-value 107;
}
srlg8 {
srlg-value 108;
}
srlg9 {
srlg-value 109;
}
srlg10 {
srlg-value 110;
}
srlg111 {
srlg-value 111;
}
srlg112 {
srlg-value 112;
}
}
backup-selection {
destination 0.0.0.0/0 {
interface all {
admin-group {
include-all c1;
include-any c2;
preference c3;
}
srlg loose;
downstream-paths-only;
bandwidth-greater-equal-primary;
neighbor {
preference 10.255.102.178;
}
neighbor-tag {
preference 1004;
}
metric-order dest;
evaluation-order [ admin-group srlg bandwidth ];
}
}
destination 100.0.1.0/24 {
interface all {
srlg strict;
bandwidth-greater-equal-primary;
}
}
destination 100.0.7.0/24 {
interface all {
srlg strict;
}
}
}
如果完成设备配置，请从配置模式进入。commit
验证
验证配置是否工作正常。
验证路由
目的
验证是否已学习预期路由。
行动
在作模式下，运行 show route 路由表的命令。
user@R3> show route
inet.0: 32 destinations, 32 routes (32 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
10.255.102.128/32 *[Direct/0] 1w0d 04:14:44
> via lo0.31
10.255.102.146/32 *[IS-IS/18] 6d 07:19:57, metric 40
> to 100.2.3.1 via ge-1/3/5.0
to 100.3.4.2 via ge-0/3/1.0
10.255.102.154/32 *[IS-IS/18] 1w0d 04:12:02, metric 25
> to 100.3.6.2 via ge-2/0/4.0
10.255.102.156/32 *[IS-IS/18] 06:38:55, metric 30
> to 100.2.3.1 via ge-1/3/5.0
to 100.3.6.2 via ge-2/0/4.0
10.255.102.166/32 *[IS-IS/18] 1w0d 04:11:57, metric 23
> to 100.3.5.2 via ge-0/3/6.0
10.255.102.172/32 *[IS-IS/18] 1w0d 04:12:03, metric 31
> to 100.3.4.2 via ge-0/3/1.0
10.255.102.178/32 *[IS-IS/18] 06:38:55, metric 20
> to 100.2.3.1 via ge-1/3/5.0
10.255.102.180/32 *[IS-IS/18] 1w0d 04:12:51, metric 32
> to 100.3.7.2 via ge-1/1/0.0
100.0.1.0/24 *[IS-IS/18] 1w0d 04:11:57, metric 30
> to 100.2.3.1 via ge-1/3/5.0
to 100.3.4.2 via ge-0/3/1.0
100.0.4.0/24 *[IS-IS/18] 1w0d 04:12:03, metric 39
> to 100.3.4.2 via ge-0/3/1.0
100.0.5.0/24 *[IS-IS/18] 1w0d 04:11:57, metric 64
> to 100.3.5.2 via ge-0/3/6.0
100.0.6.0/24 *[IS-IS/18] 1w0d 04:12:02, metric 67
> to 100.3.6.2 via ge-2/0/4.0
100.0.7.0/24 *[IS-IS/18] 1w0d 04:12:51, metric 45
> to 100.3.7.2 via ge-1/1/0.0
100.1.2.0/24 *[IS-IS/18] 06:38:55, metric 20
> to 100.2.3.1 via ge-1/3/5.0
100.1.4.0/24 *[IS-IS/18] 06:38:55, metric 30
> to 100.2.3.1 via ge-1/3/5.0
to 100.3.6.2 via ge-2/0/4.0
100.1.7.0/24 *[IS-IS/18] 06:38:55, metric 30
> to 100.2.3.1 via ge-1/3/5.0
to 100.3.6.2 via ge-2/0/4.0
100.2.3.0/24 *[Direct/0] 1w0d 04:13:11
> via ge-1/3/5.0
100.2.3.2/32 *[Local/0] 1w0d 04:13:11
Local via ge-1/3/5.0
100.2.4.0/24 *[IS-IS/18] 06:38:55, metric 22
> to 100.2.3.1 via ge-1/3/5.0
100.2.5.0/24 *[IS-IS/18] 06:38:55, metric 20
> to 100.2.3.1 via ge-1/3/5.0
100.2.6.0/24 *[IS-IS/18] 06:38:55, metric 22
> to 100.2.3.1 via ge-1/3/5.0
100.2.7.0/24 *[IS-IS/18] 06:38:55, metric 23
> to 100.2.3.1 via ge-1/3/5.0
100.3.4.0/24 *[Direct/0] 1w0d 04:13:10
> via ge-0/3/1.0
100.3.4.1/32 *[Local/0] 1w0d 04:13:10
Local via ge-0/3/1.0
100.3.5.0/24 *[Direct/0] 1w0d 04:13:10
> via ge-0/3/6.0
100.3.5.1/32 *[Local/0] 1w0d 04:13:10
Local via ge-0/3/6.0
100.3.6.0/24 *[Direct/0] 1w0d 04:13:10
> via ge-2/0/4.0
100.3.6.1/32 *[Local/0] 1w0d 04:13:10
Local via ge-2/0/4.0
100.3.7.0/24 *[Direct/0] 1w0d 04:13:10
> via ge-1/1/0.0
100.3.7.1/32 *[Local/0] 1w0d 04:13:10
Local via ge-1/1/0.0
100.4.5.0/24 *[IS-IS/18] 1w0d 04:11:57, metric 23
> to 100.3.5.2 via ge-0/3/6.0
100.6.7.0/24 *[IS-IS/18] 1w0d 04:12:02, metric 25
> to 100.3.6.2 via ge-2/0/4.0
iso.0: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
49.0001.0010.0100.1004/72
*[Direct/0] 1w0d 04:14:44
> via lo0.0
mpls.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
0 *[MPLS/0] 1w0d 04:14:47, metric 1
Receive
1 *[MPLS/0] 1w0d 04:14:47, metric 1
Receive
2 *[MPLS/0] 1w0d 04:14:47, metric 1
Receive
13 *[MPLS/0] 1w0d 04:14:47, metric 1
Receive
inet6.0: 39 destinations, 43 routes (39 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
2001:100:0:1::/64 *[IS-IS/18] 1w0d 04:11:57, metric 30
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
2001:100:0:4::/64 *[IS-IS/18] 1w0d 04:12:03, metric 39
> to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
2001:100:0:5::/64 *[IS-IS/18] 1w0d 04:11:57, metric 64
> to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:0:6::/64 *[IS-IS/18] 1w0d 04:12:02, metric 67
> to fe80::2a0:a514:0:3f49 via ge-2/0/4.0
2001:100:0:7::/64 *[IS-IS/18] 1w0d 04:12:51, metric 45
> to fe80::2a0:a514:0:4949 via ge-1/1/0.0
2001:100:1:2::/64 *[IS-IS/18] 1w0d 04:11:57, metric 20
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:1:4::/64 *[IS-IS/18] 1w0d 04:11:57, metric 30
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
2001:100:1:7::/64 *[IS-IS/18] 1w0d 04:11:57, metric 30
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
2001:100:2:3::/64 *[Direct/0] 1w0d 04:13:00
> via ge-1/3/5.0
2001:100:2:3::2/128*[Local/0] 1w0d 04:13:11
Local via ge-1/3/5.0
2001:100:2:4::/64 *[IS-IS/18] 1w0d 04:11:57, metric 22
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:2:5::/64 *[IS-IS/18] 1w0d 04:11:57, metric 20
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:2:6::/64 *[IS-IS/18] 1w0d 04:11:57, metric 22
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:2:7::/64 *[IS-IS/18] 1w0d 04:11:57, metric 23
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:3:4::/64 *[Direct/0] 1w0d 04:12:59
> via ge-0/3/1.0
2001:100:3:4::1/128*[Local/0] 1w0d 04:13:10
Local via ge-0/3/1.0
2001:100:3:5::/64 *[Direct/0] 1w0d 04:12:59
> via ge-0/3/6.0
2001:100:3:5::1/128*[Local/0] 1w0d 04:13:10
Local via ge-0/3/6.0
2001:100:3:6::/64 *[Direct/0] 1w0d 04:12:59
> via ge-2/0/4.0
2001:100:3:6::1/128*[Local/0] 1w0d 04:13:10
Local via ge-2/0/4.0
2001:100:3:7::/64 *[Direct/0] 1w0d 04:12:59
> via ge-1/1/0.0
2001:100:3:7::1/128*[Local/0] 1w0d 04:13:10
Local via ge-1/1/0.0
2001:100:4:5::/64 *[IS-IS/18] 1w0d 04:11:57, metric 23
> to fe80::2a0:a514:0:3549 via ge-0/3/6.0
2001:100:6:7::/64 *[IS-IS/18] 1w0d 04:12:02, metric 25
> to fe80::2a0:a514:0:3f49 via ge-2/0/4.0
abcd::10:255:102:128/128
*[Direct/0] 1w0d 04:14:43
> via lo0.0
abcd::10:255:102:146/128
*[IS-IS/18] 1w0d 04:11:57, metric 40
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
abcd::10:255:102:154/128
*[IS-IS/18] 1w0d 04:12:02, metric 25
> to fe80::2a0:a514:0:3f49 via ge-2/0/4.0
abcd::10:255:102:156/128
*[IS-IS/18] 1w0d 04:11:57, metric 30
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
abcd::10:255:102:166/128
*[IS-IS/18] 1w0d 04:11:57, metric 23
> to fe80::2a0:a514:0:3549 via ge-0/3/6.0
abcd::10:255:102:172/128
*[IS-IS/18] 1w0d 04:12:03, metric 31
> to fe80::2a0:a514:0:2b49 via ge-0/3/1.0
abcd::10:255:102:178/128
*[IS-IS/18] 1w0d 04:11:57, metric 20
> to fe80::2a0:a514:0:1749 via ge-1/3/5.0
to fe80::2a0:a514:0:3549 via ge-0/3/6.0
abcd::10:255:102:180/128
*[IS-IS/18] 1w0d 04:12:51, metric 32
> to fe80::2a0:a514:0:4949 via ge-1/1/0.0
fe80::/64 *[Direct/0] 1w0d 04:13:00
> via ge-1/3/5.0
[Direct/0] 1w0d 04:12:59
> via ge-0/3/1.0
[Direct/0] 1w0d 04:12:59
> via ge-0/3/6.0
[Direct/0] 1w0d 04:12:59
> via ge-2/0/4.0
[Direct/0] 1w0d 04:12:59
> via ge-1/1/0.0
fe80::2a0:a50f:fc64:7649/128
*[Direct/0] 1w0d 04:14:43
> via lo0.0
fe80::2a0:a514:0:2049/128
*[Local/0] 1w0d 04:13:11
Local via ge-1/3/5.0
fe80::2a0:a514:0:2249/128
*[Local/0] 1w0d 04:13:10
Local via ge-0/3/1.0
fe80::2a0:a514:0:2349/128
*[Local/0] 1w0d 04:13:10
Local via ge-0/3/6.0
fe80::2a0:a514:0:2449/128
*[Local/0] 1w0d 04:13:10
Local via ge-2/0/4.0
fe80::2a0:a514:0:2549/128
*[Local/0] 1w0d 04:13:10
Local via ge-1/1/0.0
意义
输出显示所有设备 R3 路由。
验证 IS-IS 路由
目的
验证 IS-IS 的路由表。
行动
在作模式下，为设备 R3 运行 show isis route 命令。
user@R3> show isis route
IS-IS routing table Current version: L1: 0 L2: 5023
IPv4/IPv6 Routes
----------------
Prefix L Version Metric Type Interface NH Via Backup Score
10.255.102.146/32 2 5023 40 int ge-1/3/5.0 IPV4 R2
ge-0/3/1.0 IPV4 R4 0000000000200000
10.255.102.154/32 2 5023 25 int ge-2/0/4.0 IPV4 R6
10.255.102.156/32 2 5023 30 int ge-1/3/5.0 IPV4 R2
ge-2/0/4.0 IPV4 R6 0000000000000000
10.255.102.166/32 2 5023 23 int ge-0/3/6.0 IPV4 R5
10.255.102.172/32 2 5023 31 int ge-0/3/1.0 IPV4 R4
10.255.102.178/32 2 5023 20 int ge-1/3/5.0 IPV4 R2
10.255.102.180/32 2 5023 32 int ge-1/1/0.0 IPV4 R7
100.0.1.0/24 2 5023 30 int ge-1/3/5.0 IPV4 R2
ge-0/3/1.0 IPV4 R4 0000000002003100
100.0.4.0/24 2 5023 39 int ge-0/3/1.0 IPV4 R4
100.0.5.0/24 2 5023 64 int ge-0/3/6.0 IPV4 R5
100.0.6.0/24 2 5023 67 int ge-2/0/4.0 IPV4 R6
100.0.7.0/24 2 5023 45 int ge-1/1/0.0 IPV4 R7
100.1.2.0/24 2 5023 20 int ge-1/3/5.0 IPV4 R2
100.1.4.0/24 2 5023 30 int ge-1/3/5.0 IPV4 R2
ge-2/0/4.0 IPV4 R6 0000000000000000
100.1.7.0/24 2 5023 30 int ge-1/3/5.0 IPV4 R2
ge-2/0/4.0 IPV4 R6 0000000000000000
100.2.4.0/24 2 5023 22 int ge-1/3/5.0 IPV4 R2
100.2.5.0/24 2 5023 20 int ge-1/3/5.0 IPV4 R2
100.2.6.0/24 2 5023 22 int ge-1/3/5.0 IPV4 R2
100.2.7.0/24 2 5023 23 int ge-1/3/5.0 IPV4 R2
100.4.5.0/24 2 5023 23 int ge-0/3/6.0 IPV4 R5
100.6.7.0/24 2 5023 25 int ge-2/0/4.0 IPV4 R6
2001:100:0:1::/64 2 5023 30 int ge-1/3/5.0 IPV6 R2
ge-0/3/1.0 IPV6 R4
2001:100:0:4::/64 2 5023 39 int ge-0/3/1.0 IPV6 R4
2001:100:0:5::/64 2 5023 64 int ge-0/3/6.0 IPV6 R5
2001:100:0:6::/64 2 5023 67 int ge-2/0/4.0 IPV6 R6
2001:100:0:7::/64 2 5023 45 int ge-1/1/0.0 IPV6 R7
2001:100:1:2::/64 2 5023 20 int ge-1/3/5.0 IPV6 R2
ge-0/3/6.0 IPV6 R5
2001:100:1:4::/64 2 5023 30 int ge-1/3/5.0 IPV6 R2
ge-0/3/1.0 IPV6 R4
2001:100:1:7::/64 2 5023 30 int ge-1/3/5.0 IPV6 R2
ge-0/3/1.0 IPV6 R4
2001:100:2:4::/64 2 5023 22 int ge-1/3/5.0 IPV6 R2
ge-0/3/6.0 IPV6 R5
2001:100:2:5::/64 2 5023 20 int ge-1/3/5.0 IPV6 R2
ge-0/3/6.0 IPV6 R5
2001:100:2:6::/64 2 5023 22 int ge-1/3/5.0 IPV6 R2
ge-0/3/6.0 IPV6 R5
2001:100:2:7::/64 2 5023 23 int ge-1/3/5.0 IPV6 R2
ge-0/3/6.0 IPV6 R5
2001:100:4:5::/64 2 5023 23 int ge-0/3/6.0 IPV6 R5
2001:100:6:7::/64 2 5023 25 int ge-2/0/4.0 IPV6 R6
abcd::10:255:102:146/128 2 5023 40 int ge-1/3/5.0 IPV6 R2
ge-0/3/1.0 IPV6 R4
abcd::10:255:102:154/128 2 5023 25 int ge-2/0/4.0 IPV6 R6
abcd::10:255:102:156/128 2 5023 30 int ge-1/3/5.0 IPV6 R2
ge-0/3/1.0 IPV6 R4
abcd::10:255:102:166/128 2 5023 23 int ge-0/3/6.0 IPV6 R5
abcd::10:255:102:172/128 2 5023 31 int ge-0/3/1.0 IPV6 R4
abcd::10:255:102:178/128 2 5023 20 int ge-1/3/5.0 IPV6 R2
ge-0/3/6.0 IPV6 R5
abcd::10:255:102:180/128 2 5023 32 int ge-1/1/0.0 IPV6 R7
意义
输出显示 IS-IS 路由器的路由表。
验证设备 R3 的备份 SPF 根。
目的
验证设备 R3 的潜在 IS-IS 备份 SPF 根。
行动
在作模式下，为设备 R3 运行 show isis backup spf results 命令。
user@R3> show isis backup spf results
IS-IS level 1 SPF results:
0 nodes
IS-IS level 2 SPF results:
R0.00
Primary next-hop: ge-1/3/5, IPV4, R2, SNPA: b0:c6:9a:2a:f4:bc
Primary next-hop: ge-1/3/5, IPV6, R2, SNPA: b0:c6:9a:2a:f4:bc
Root: R4, Root Metric: 21, Metric: 18, Root Preference: 0x0
track-item: R4.04-00, track-item-isnbr: R4.00
track-item: R0.00-00, track-item-isnbr: R6.03
Eligible, Backup next-hop: ge-0/3/1, IPV4, R4, SNPA: b0:c6:9a:2a:f4:bd
Eligible, Backup next-hop: ge-0/3/1, IPV6, R4, SNPA: b0:c6:9a:2a:f4:bd
Root: R2, Root Metric: 10, Metric: 20, Root Preference: 0x0
track-item: R2.02-00, track-item-isnbr: R2.00
track-item: R1.02-00
track-item: R1.00-00, track-item-isnbr: R2.02
track-item: R0.00-00, track-item-isnbr: R1.02
Not eligible, IPV4, Reason: Primary next-hop link fate sharing
Not eligible, IPV6, Reason: Primary next-hop link fate sharing
Root: R7, Root Metric: 22, Metric: 20, Root Preference: 0x0
track-item: R7.05-00, track-item-isnbr: R7.00
track-item: R1.02-00
track-item: R1.00-00
track-item: R0.00-00, track-item-isnbr: R1.02
Eligible, Backup next-hop: ge-1/1/0, IPV4, R7, SNPA: b0:c6:9a:2a:f4:bd
Eligible, Backup next-hop: ge-1/1/0, IPV6, R7, SNPA: b0:c6:9a:2a:f4:bd
Root: R5, Root Metric: 13, Metric: 28, Root Preference: 0x0
track-item: R5.03-00, track-item-isnbr: R5.00
track-item: R4.04-00, track-item-isnbr: R4.00
track-item: R4.00-00
track-item: R0.00-00, track-item-isnbr: R6.03
Eligible, Backup next-hop: ge-0/3/6, IPV4, R5, SNPA: b0:c6:9a:2a:f4:bd
Eligible, Backup next-hop: ge-0/3/6, IPV6, R5, SNPA: b0:c6:9a:2a:f4:bd
Root: R6, Root Metric: 15, Metric: 30, Root Preference: 0x0
track-item: R7.05-00, track-item-isnbr: R7.00
track-item: R7.04-00, track-item-isnbr: R6.00
track-item: R7.00-00
track-item: R1.02-00
track-item: R1.00-00
track-item: R0.00-00, track-item-isnbr: R1.02
Eligible, Backup next-hop: ge-2/0/4, IPV4, R6, SNPA: b0:c6:9a:2a:f4:bd
Eligible, Backup next-hop: ge-2/0/4, IPV6, R6, SNPA: b0:c6:9a:2a:f4:bd
R7.00
Primary next-hop: ge-1/1/0, IPV4, R7, SNPA: b0:c6:9a:2a:f4:bd
Primary next-hop: ge-1/1/0, IPV6, R7, SNPA: b0:c6:9a:2a:f4:bd
Root: R7, Root Metric: 22, Metric: 0, Root Preference: 0x0
Not eligible, IPV4, Reason: Interface protection not configured
Not eligible, IPV6, Reason: Interface protection not configured
Root: R6, Root Metric: 15, Metric: 10, Root Preference: 0x0
track-item: R7.04-00, track-item-isnbr: R6.00
track-item: R7.00-00
. . .
意义
输出显示通过每个直接连接的路由器的根计算。
验证设备 R3 的备份选择策略
目的
行动
在作模式下，为设备 R3 运行 show backup-selection 命令。
user@R3> show backup-selection
Prefix: 0.0.0.0/0
Interface: all
Admin-group include-all: c1
Admin-group include-any: c2
Admin-group preference: c3
Neighbor preference: 10.255.102.178
Neighbor-tag preference: 1004
Protection Type: Link, Downstream Paths Only: Enabled, SRLG: Loose, B/w >= Primary: Enabled, Root-metric: lowest, Dest-metric: lowest
Metric Evaluation Order: Dest-metric, Root-metric
Policy Evaluation Order: Admin-group, SRLG, Bandwidth
Prefix: 100.0.1.0/24
Interface: all
Protection Type: Link, Downstream Paths Only: Disabled, SRLG: Strict, B/w >= Primary: Enabled, Root-metric: lowest, Dest-metric: lowest
Metric Evaluation Order: Dest-metric, Root-metric
Policy Evaluation Order: Admin-group, SRLG, Bandwidth, Protection, Neighbor, Metric, Neighbor-Tag
Prefix: 100.0.7.0/24
Interface: all
Protection Type: Link, Downstream Paths Only: Disabled, SRLG: Strict, B/w >= Primary: Disabled, Root-metric: lowest, Dest-metric: lowest
Metric Evaluation Order: Dest-metric, Root-metric
Policy Evaluation Order: Admin-group, SRLG, Bandwidth, Protection, Neighbor, Metric, Neighbor-Tag
意义
输出显示每个主下一跃点接口每个前缀的配置策略。