Re: OT: 3560 Code issues MST

Joe,
Did you check region name/version/mapping ?
The switches were sticking as CIST root or just regional root ?
A show span vlan was showing the "should be root" as internal ?

I've run into issues with switches with different default configuration
names, that partition the spanning tree domain w/o my being aware,
that's why I ask. It may be a code bug too, of course.

-Carlos

Joe Sanchez @ 05/09/2012 01:38 -0300 dixit:
> Just had a major issue with my 3560 code, the problem was the code I had was
> the same across all my switches, although each of the switches are different
> by model i.e.
> 48ps versus 24TS but none-the-less had major issues with
> MST.
>
> Problem code was: c3560-ipservicesk9-mz.122-50.SE1.bin
> Hardware was: WS-C3560-24PS
> Problem:
>
> Although all ports were FastEthernet and the fact that MST instance 0-3
> priority was set to 61440 and two of the upstream switches were configured
> for root primary and root secondary the problem switch refused to become
> anything but ROOT for all instances "VLANs"
> I did everything from
> configuring all the upstream facing port cost to extremely low, to setting
> the priorities of the upstream switches facing the problem switch to 64,
> nothing worked.. So I upgraded the code to a
> c3560-ipservicesk9-mz.122-53.SE1.bin now all is working fine and I can move
> on with my lab
> For what ever reason, I haven't ran into this problem in
> the past although I know that I've been through a few major MST topologies,
> but test is coming up so I thought I'd tackle a bigger MST lab
> good
> troubleshooting though!!!!
>
> Good luck all, hope you can avoid the hours I spent on this one
> MAC does't
> have a working tFTP server, and had to put my work laptop into safe-mode to
> avoid the NIDS breaking my tftpd-32 software transfers
> I need a break
> :)
>
> Joe Sanchez
>
>
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-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net