Cisco 7606 FIB Protocol Allocation mismatch after mls cef maximum-routes command

Question

Hi,
we are trying to fine tune the mls cef maximum-routes without success for ipv4 on our Cisco 7606 router equiped like this:
Mod Ports Card Type                              Model              Serial No.
  2   24  CEF720 24 port 1000mb SFP              WS-X6724-SFP       SAL09169CP0
  6    2  Supervisor Engine 720 (Active)         WS-SUP720-3BXL     SAL10370YH7
Mod MAC addresses                       Hw    Fw           Sw           Status
  2  0013.c38b.ed9c to 0013.c38b.edb3   2.2   12.2(14r)S5  12.2(33)SRC1 Ok
  6  0017.9441.b750 to 0017.9441.b753   5.2   8.4(2)       12.2(33)SRC1 Ok
Mod  Sub-Module                  Model              Serial       Hw     Status 
  2  Centralized Forwarding Card WS-F6700-CFC       SAL09159C8T  2.0    Ok
  6  Policy Feature Card 3       WS-F6K-PFC3BXL     SAL10360CJ0  1.8    Ok
  6  MSFC3 Daughterboard         WS-SUP720          SAL10360GNX  2.5    Ok
the show version is like this:
System image file is "bootdisk:c7600s72033-adventerprisek9-mz.122-33.SRC1.bin"
We tryied to set the value of the ipv4 FIB TCAM to 720k with this command:
mls cef maximum-routes ip 720
and then to save the configuration we used the "write" command. This was the output after we wrote the configuration:
FIB TCAM maximum routes :
=======================
Current :-
 IPv4 + MPLS         - 512k (default)
 IPv6 + IP Multicast - 256k (default)
User configured :-
 IPv4                - 720k
 MPLS                - 16k (default)
 IPv6 + IP Multicast - 144k (default)
Upon reboot :-
 IPv4                - 720k
 MPLS                - 16k (default)
 IPv6 + IP Multicast - 144k (default)
so we reloaded the router to get the new value.
when the router was up again it start to reload each 4 minutes. The FIB TCAM value was:
show mls cef maximum-routes
Reload scheduled for 13:50:09 DST Wed Aug 13 2014 (in 2 minutes and 51 seconds)
Reload reason: FIB Protocol Allocation mismatchFIB TCAM maximum routes :
=======================
Current :-
 IPv4 + MPLS         - 512k (default)
 IPv6 + IP Multicast - 256k (default)
User configured :-
 IPv4 + MPLS         - 512k (default)
 IPv6 + IP Multicast - 256k (default)
Upon reboot :-
 IPv4 + MPLS         - 512k (default)
 IPv6 + IP Multicast - 256k (default)
We know that our cisco is able to handle up to 1M of ipv4 routes inside the TCAM but we cannot set more than 512k ipv4 routes.
Why the router doesn't accept the new value?
Thanks
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/117712-problemsolution-cat6500-00.html
http://www.cisco.com/c/en/us/support/docs/switches/catalyst-6500-series-switches/116132-problem-catalyst6500-00.html
https://supportforums.cisco.com/discussion/12250356/recommended-value-7600-ipv4-fib-tcam

Answer 1

Hi Paolo,
#sho ver
Cisco IOS Software, s72033_rp Software (s72033_rp-ADVENTERPRISEK9_WAN-M), Version 12.2(33)SXI13, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Tue 11-Mar-14 04:53 by prod_rel_team
ROM: System Bootstrap, Version 12.2(17r)S2, RELEASE SOFTWARE (fc1)
 punk.gs2 uptime is 17 hours, 55 minutes
Uptime for this control processor is 17 hours, 55 minutes
Time since punk.gs2 switched to active is 17 hours, 54 minutes
System returned to ROM by reload at 22:32:30 BST Mon Sep 1 2014 (SP by reload)
System restarted at 22:35:24 BST Mon Sep 1 2014
System image file is "disk0:s72033-adventerprisek9_wan-mz.122-33.SXI13.bin"
Last reload reason: Reload Command
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
[email protected].
cisco WS-C6504-E (R7000) processor (revision 2.0) with 983008K/65536K bytes of memory.
Processor board ID FOX11270F1B
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from power-on
11 Virtual Ethernet interfaces
50 Gigabit Ethernet interfaces
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102
#remote command switch show version
Cisco IOS Software, s72033_sp Software (s72033_sp-ADVENTERPRISEK9_WAN-M), Version 12.2(33)SXI13, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Tue 11-Mar-14 05:09 by prod_rel_team
ROM: System Bootstrap, Version 8.5(4)
 punk.gs2 uptime is 17 hours, 55 minutes
Time since punk.gs2 switched to active is 17 hours, 55 minutes
System returned to ROM by reload at 22:32:30 BST Mon Sep 1 2014
System restarted at 22:34:17 BST Mon Sep 1 2014
System image file is "disk0:s72033-adventerprisek9_wan-mz.122-33.SXI13.bin"
Last reload reason: Reload Command
cisco Catalyst 6000 (R7000) processor with 983008K/65536K bytes of memory.
Processor board ID FOX11270F1B
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from s/w reset
50 Gigabit Ethernet interfaces
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.
500472K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102
Hope that helps.