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I believe there is also knob to disable spanning tree in Brocade per interface. IIRC something like no spanning-tree under the interface will do the trick. On Thu, Mar 24, 2016 at 11:09 AM, Dan Winkel <[log in to unmask]> wrote: > I over simplified my explanation because it makes me look bad. Here is the > full breakdown if you are interested... > > We are using a Brocade CER. Last night we upgraded from 5.5e to 5.6g. > > Here is the syntax change as documented by RANCID: > > mac access-list BLOCKSPAN > - deny any 0180.c200.0000 ffff.ffff.ffff any etype any > - permit any any any etype any > + sequence 10 deny any 0180.c200.0000 ffff.ffff.ffff any etype any > + sequence 20 permit any any any etype any > > > That change happened automatically and worked fine. We had a separate > (possibly unrelated) issue this morning and decided to rollback the code > just in case. I wasn’t aware we were rolling back when I sent my query. > > If I would have waited a few more minutes (or looked at the config more > closely or talked to the engineer) RANCID would have told me the downgrade > was not as graceful and just deleted the access-list: > > - mac access-list BLOCKSPAN > - sequence 10 deny any 0180.c200.0000 ffff.ffff.ffff any etype any > - sequence 20 permit any any any etype any > > > Sorry for bothering everyone with our internal issue. In hindsight it was > pretty obvious what happened. My only excuse is I am the only person in the > office today because we got 14” of snow last night. > > Thanks for all the help. > Dan > > > > > > > > On 3/24/16, 10:36 AM, "MICE Discuss on behalf of Mike Horwath" < > [log in to unmask] on behalf of [log in to unmask]> wrote: > > >On Thu, Mar 24, 2016 at 03:26:33PM +0000, Dan Winkel wrote: > >> That was the case. A code upgrade last night changed the syntax of > >> the BPDU blocking code. > > > >What are you using that a change like this happens? > > > >Just wondering so I can get smarter. > > > >-- > >Mike Horwath, reachable via [log in to unmask] > -- Jay Hanke CTO Neutral Path Communications 3 Civic Center Plaza, Suite 204 Mankato, MN 56001 (507) 327-2398 mobile [log in to unmask] www.neutralpath.net