MSTP on Access Layer Switches

[Terence Lockette]

Hello everyone,

When configuring MST for STP, is there a need to configure it on access layer switches in a collapsed core design?  I can find docs to configure the root and secondary root bridges but I don't see anything about configuring access layer switches.  In RSTP, you configure it on all switches cooperating in STP and set the root and secondary bridges accordingly.  Any help is appreciated.

Regards,

Terence

[Reza Sharifi]

Hi,

You should configure your access switches for MST as well so you are using the same STP for core and access.  The only difference between the core and access is that the core is root and back up root for STP and the access layer is just default (32768).

HTH

[Terence Lockette]

Reza,

Thanks for responding.  So at the access layer, I would configure MST accordingly but don't set these switches with the commands to make them root?  If so, that makes sense.

[Reza Sharifi]

That is correct.

HTH