I recently upgraded a pair of Catalyst4500s from Sup6E to Sup7E. Before the upgrade, I pre-loaded IOS-XE 3.4.1SG on the Sup7Es, and loaded the migration configurations into
bootflash: on the new sups. We needed to perform the upgrade as quickly as possible; and I had only a few hours between the time I cut the tape on the shipping boxes and putting the new Sup7Es into production.
After pulling the old Sup6s out, I started maintenance with one Sup7E in each chassis running 3.4.1SG (which I had pre-loaded); the other two Sup7Es were left on 3.2.2SG to conserve time while I prepared for maintenance. I manually copied 3.4.1SG to
slavebootflash: and reloaded when I inserted the standby supervisors.
FWIW, copying IOS to
slavebootflash: is much faster than copying with tftp on these Sup7Es.
Maintenance window results
I had a strange result by the end of the maintenance window:
- Both Sup7E OOB mgmt interfaces on
- One Sup7E OOB mgmt interface on
Mgmt-vrf(this one was ACTIVE)
- The other Sup7E OOB mgmt interface on
mgmtVrf(this one was STANDBY)
Somehow three out of the four new Sup7Es came up with
mgmtVrf on the OOB FastEthernet1 interface, but one was stuck with
Mgmt-vrf. I could not find a way to change
Mgmt-vrf. During my attempts to get consistent management VRFs inside my maintenance window, one of the supervisors went lights-out and crashed.
At the end of maintenance, I was:
- Running out of time
- Hesitant to keep putting time into this, because it took over five minutes each time I booted IOS-XE on Sup7E
- Unwilling to risk a config mismatch between Sup7E ACTIVE / STANDBY oob FastEthernet1 (every time I saw this during the maintenance window, I could not successfully fail from ACTIVE -> STANDBY, and still ping FastEthernet1).
Thus, I decided to take sw2 STANDBY Sup7E to our lab to try to fix it, hoping that I'd be able to replicate how I managed to get the others into
In my attempts to get sw2 STANDBY FastEth1 into
Mgmt-vrf in IOS-XE 3.4.1SG, I've had no luck with:
- Copying a new config with
- tftping a new startup-config with
- tftping a new running-config with
Mgmt-vrfinto the sup
- Changing the config to use
Mgmt-vrfwhile the switch is running
How can I reconfigure this supervisor to use
Mgmt-vrf, or reconfigure the other supervisor to use
Console log from sw2
This is what I see when I boot 3.4.1SG on the misbehaving supervisor.
% Use 'vrf definition mgmtVrf' command % Management interface VRF can not be changed. ... more console output here Interface FastEthernet1's vrf mgmtVrf does not match with cfg vrf Mgmt-vrf Press RETURN to get started! sw2#show mod | i SUP7 3 4 Sup 7-E 10GE (SFP+), 1000BaseX (SFP) WS-X45-SUP7-E CAT12345678 sw2# sw2#sh ver | i Software Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3 Switch Software (cat4500e-UNIVERSALK9-M), Version 03.04.01.SG RELEASE SOFTWARE (fc3) sw2# sw2# sw2#sh ip vrf Name Default RD Interfaces Liin-vrf <not set> Mgmt-vrf <not set> mgmtVrf <not set> Fa1 <--------- sw2#