Cisco ASR 9006 Manual do Utilizador descarregar pdf (Página 19)

Presentation_ID

L/B/E Line Cards – What’s the Difference?

Forwarding ASIC

STATS MEMORY

FRAME MEMORY

LOOKUP

MEMORY

TCAM

FIB

MAC

 Each NPU has Four Main Associated memories TCAM , Search/Lookup memory , Frame/buffer

memory and statistics memory

–TCAM is used for VLAN tag, QoS and ACL classification

–Lookup Memory is used for storing FIB tables, Mac address table and Adjacencies

–Stats memory is used for all interface statistics, forwarding statistics etc

–Frame memory is buffer memory for Queues

 E/B/L line card have different TCAM , Stats and Frame Memory size, which give different scale number

of the QoS queues and L2 sub-interfaces per line card

 Lookup Memory is the same across line card s why?

–To support mix of the line cards without impacting the system wide scale including routing,

multicast, MAC address, L3 interface, MPLS label space scale

NP complex

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Cisco ASR 9006 Manual do Utilizador Página 19