NVRAM errors when saving configuration

June 25th, 2009

I was working on a client switch (VSS, modular IOS 12.2(33)SXH or IOS 12.2(33)SXI — I forget at this point) and ran into the following error message when attempting to save the configuration Read the rest of this entry »

EtherChannel problem with VSS (IOS 12.2(33)SXI)

March 13th, 2009

I recently had an experience working on a couple of 6500-series switches in a VSS configuration.  Both switches were running IOS 12.2(33)SXI.  I found an interesting behavior when working on the switches.  I’d seen this type of behavior before on lower-end switches (Cisco/IBM CIGESM Blade Center switches), but had not seen this behavior before on the 6500-series.

While working on the switch, I started to notice some errors that were being generated, namely:

SWITCH#
*Feb  4 10:01:53.463 MST: %EC-SW1_SP-5-CANNOT_BUNDLE2: Gi1/5/2 is not compatible with Gi2/5/2 and will be suspended (trunk mode of Gi1/5/2 is dynamic, Gi2/5/2 is trunk)
SWITCH#sh run int gi1/5
*Feb  4 10:02:03.467 MST: %EC-SW1_SP-5-CANNOT_BUNDLE2: Gi1/5/2 is not compatible with Gi2/5/2 and will be suspended (trunk mode of Gi1/5/2 is dynamic, Gi2/5/2 is trunk)

Well, I had been configuring both of these switches from the ground-up, so this sparked my curiosity as I rarely (if ever) use dynamic mode for any ports.  What I found was a little disconcerting, in that the running configuration really isn’t the running configuration:
Read the rest of this entry »