Completed one of the router upgrades I mentioned the other day lastnight.  One real issue I ran into was the built in sup-bootflash: was too small to hold the IOS image I wanted and I wasted some amount of time deleting/squeezing sup-bootflash: and remembering the boot system syntax to boot off disk0:.

Thought I’d share some before-and-after notes.

There’s a chunk of missing time when border2 was offline and I was rebuilding the config but it sure was worth it. The only CPU spike was shortly after all my BGP peers came back up and there was the necessary BGP Scanner run.

A couple more before-and-after snapshots:

FIB Usage (look more at the %Used for IPv4 routes):

border2#show platform hardware capacity | beg L3
L3 Forwarding Resources
             FIB TCAM usage:                     Total        Used       %Used
                  72 bits (IPv4, MPLS, EoM)     245760      244699        100%
                 144 bits (IP mcast, IPv6)        8192        1498         18%

                     detail:      Protocol                    Used       %Used
                                  IPv4                      244699        100%
                                  MPLS                           0          0%
                                  EoM                            0          0%
                                  IPv6                        1495         18%

border2#show platform hardware capacity | beg L3
L3 Forwarding Resources
             FIB TCAM usage:                     Total        Used       %Used
                  72 bits (IPv4, MPLS, EoM)     802816      267860         33%
                 144 bits (IP mcast, IPv6)      122880        1496          1%

                     detail:      Protocol                    Used       %Used
                                  IPv4                      267860         33%
                                  MPLS                           0          0%
                                  EoM                            0          0%
                                  IPv6                        1493          1%

Maximum Routes (changed this with mls cef maximum-routes ip 768 and mls cef maximum-routes mpls 1 – I remain hopeful IPv6 will take off):

border2#show mls cef max
FIB TCAM maximum routes :
=======================
Current :-
-------
 IPv4                - 239k
 MPLS                - 1k (default)
 IPv6 + IP Multicast - 8k (default)

border2#show mls cef max
FIB TCAM maximum routes :
=======================
Current :-
-------
IPv4                - 768k
MPLS                - 1k
IPv6 + IP Multicast - 120k (default)

border1 gets upgraded Thursday night. Hopefully last night wasn’t disruptive for anyone.