CoS Features of the Router Hardware, PIC, MIC, and MPC Interface Families

Table 1 compares the PIC families with regard to major CoS features. Note that this table reflects the ability to perform the CoS function at the PIC , MIC, or MPC interface level and not on the system as a whole.

Table 1: CoS Features of the Router Hardware and Interface Families Compared

Feature:

MIC and MPC Interfaces

IQ PICs

IQ2 PICs

IQ2E PICs

Enhanced IQ PICs

BA classification

Yes

–

–

–

Yes

ToS bit rewrites

Yes

Yes, for IEEE bits only

Yes, for IEEE bits only

Yes, for IEEE bits only

–

Ingress ToS bit rewrites

Yes, with firewall filter

–

–

–

Yes

Hierarchical policers

Yes

–

–

–

Yes