Bit of a strange question, regarding MSTP on a 6500 running 12.2(33)SXH
I have picked up a difference in the docs between the config guide for this version and the previous version.
The previous version has a chapter on pre-standard MSTP and says trunks need to have all vlans allowed on them.
The current version does not say that, but our TAC engineer says it should.
We are connecting to another vendor running pure RSTP, the docs say this should just work and it uses the CIST to do the work.
We have all vlans configured to MST instance 1.
On the other side, we only have a few vlans existing (this is an edge switch)
When we removed a vlan from the allowed vlan list on the switchport, we had major problems.
Has anybody got any experience of MSTP/RSTP interaction?
Seen anything like this?