
© 2012 Cisco and/or its affiliates. All rights reserved.
Presentation_ID
Cisco Public
© 2013 Cisco and/or its affiliates. All rights reserved.
BRKARC-3470 Cisco Public
31
Layer 3
Engine
M-Series Forwarding Engine Architecture
FE Daughter
Card
Layer 2
Engine
Packet Headers from
I/O Module Replication Engine
Final lookup result to
I/O Module Replication Engine
Ingress MAC
table lookups
IGMP snooping
lookups
IGMP snooping
redirection
Egress MAC
lookups
IGMP snooping
lookups
FIB TCAM and
adjacency table
lookups for
Layer 3
forwarding
ECMP hashing
Multicast RPF
check
Unicast RPF
check
Ingress ACL
and QoS
classification
Ingress NetFlow
collection
Egress NetFlow
collection
Egress Pipeline
Ingress Pipeline
Egress ACL and QoS classification
Ingress policing
Egress policing
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