01-12-2010 05:59 PM - edited 03-06-2019 09:15 AM
hi all,
i wonder what is the meaning of 72bits in show platform hardware capacity
PE007#show platform hardware capacity
System Resources
PFC operating mode: PFC3B
Supervisor redundancy mode: administratively sso, operationally sso
Switching resources: Module Part number Series CEF mode
1 7600-SIP-400 CEF256 CEF
2 WS-X6748-GE-TX CEF720 CEF
5 WS-SUP720-3B supervisor CEF
6 WS-SUP720-3B supervisor CEF
------------------- omited -----------------------------
L2 Forwarding Resources
MAC Table usage: Module Collisions Total Used %Used
5 0 65536 16 1%
6 0 65536 16 1%
VPN CAM usage: Total Used %Used
512 8 2%
L3 Forwarding Resources
FIB TCAM usage: Total Used %Used
72 bits (IPv4, MPLS, EoM) 196608 196280 100%
144 bits (IP mcast, IPv6) 32768 8 1%
detail: Protocol Used %Used
IPv4 190970 97%
MPLS 5309 3%
EoM 1 1%
---------------------------- omited-------------------------------
what does 72 bits means about??
is a TCAM size for one entry of ipv4, mpls, eom??
i can't find it in "Cisco - Output Interpreter"
Solved! Go to Solution.
01-12-2010 06:34 PM
Hi,
You're correct, 72 bits is the size for one TCAM entry. Multicast and IPv6 needs two entries.
Your TCAM looks full for IPv4 and MPLS entries. As you are not using all the entries allocated for IPv6 and multicast (8 over 32k) you could re-allocate some of those entries for IPv4 traffic:
AS1-PE2-6509#sh mls cef maximum-routes
FIB TCAM maximum routes :
=======================
Current :-
-------
IPv4 + MPLS - 192k (default)
IPv6 + IP Multicast - 32k (default)
01-12-2010 06:34 PM
Hi,
You're correct, 72 bits is the size for one TCAM entry. Multicast and IPv6 needs two entries.
Your TCAM looks full for IPv4 and MPLS entries. As you are not using all the entries allocated for IPv6 and multicast (8 over 32k) you could re-allocate some of those entries for IPv4 traffic:
AS1-PE2-6509#sh mls cef maximum-routes
FIB TCAM maximum routes :
=======================
Current :-
-------
IPv4 + MPLS - 192k (default)
IPv6 + IP Multicast - 32k (default)
01-12-2010 06:43 PM
thanks for your answer.
it's great help, thanks again.
i'm tunning the parametor about TCAM size.
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