help about root bridge priority in stack

[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.

[silvio]

You need to configure for perVlan (and pvst+) the priority per vlan:
spantree vlan x priority 0 (or 4096)

[dzoki]

@silvio: did command spantree cist priority 0 implies for all VLANs?

[silvio]

no, cist is the common instance for stp in flat mode and for mstp.

[dzoki]

@silvio: thank you.