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help about root bridge priority in stack

Posted: 15 Dec 2021 06:04
by dzoki
Hi all,

I want to configure stackable switch (two OS6860E-24) too become root bridge (main switch in tree). All alcatel switches have configure spantree pvst+compatibility.
I read OmniSwitch AOS Release 8 Network Configuration Guide and I'm not 100% sure if this command is enough :

spantree pvst+compatibility enable
spantree cist priority 0

Is any more command needed or not?

thanks all.

Re: help about root bridge priority in stack

Posted: 16 Dec 2021 05:31
by silvio
You need to configure for perVlan (and pvst+) the priority per vlan:
spantree vlan x priority 0 (or 4096)

Re: help about root bridge priority in stack

Posted: 16 Dec 2021 06:44
by dzoki
@silvio: did command spantree cist priority 0 implies for all VLANs?

Re: help about root bridge priority in stack

Posted: 17 Dec 2021 10:01
by silvio
no, cist is the common instance for stp in flat mode and for mstp.

Re: help about root bridge priority in stack

Posted: 21 Dec 2021 09:21
by dzoki
@silvio: thank you.