[c-nsp] 7600 Sup720-3BXL Showing Max CEF table of 256K

[Dan Benson]

Good day all,

As we all know, the Sup720 has it's limitations with regards to it's ability to handle large routing tables.  

Looking today, I was surprised to see that two of my Sup720-3BXLs are showing that I only have a MAX cef ability of 239K when all the docs I read show they should be defaulting to 512K.

Did I get screwed on hacked together SUPs or do I have a line card effecting my ability to scale my CEF table? IOS version limitation?  Info pasted below.

Thanks for the insight as always. 

db





ISO version:

c7600s72033-advipservicesk9-mz.151-1.S1

Show mod:

Mod Ports Card Type                              Model              Serial No.
--- ----- -------------------------------------- ------------------ -----------
  1   48  CEF720 48 port 10/100/1000mb Ethernet  WS-X6748-GE-TX    
  4   20  7600 ES+                               7600-ES+20G3C      
  6    2  Supervisor Engine 720 (Active)         WS-SUP720-3BXL    


Mod  Sub-Module                  Model              Serial       Hw     Status
---- --------------------------- ------------------ ----------- ------- -------
  1  Centralized Forwarding Card WS-F6700-CFC       #############  4.1    Ok
  4  7600 ES+ DFC LITE           7600-ES+3C          #############    1.1    Ok
  4  7600 ES+ 20xGE SFP          7600-ES+20G         #############    1.1    Ok
  6  Policy Feature Card 3       WS-F6K-PFC3BXL      #############    1.11   Ok
  6  MSFC3 Daughterboard         WS-SUP720           #############    5.1    Ok

Mod  Online Diag Status
---- -------------------
  1  Pass
  4  Pass
  6  Pass


sho mls cef maximum-routes

FIB TCAM maximum routes :
=======================
Current :-
-------
 IPv4 + MPLS         - 192k (default)
 IPv6 + IP Multicast - 32k (default)