Spanning Tree Limits
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07-25-2012 11:51 AM - edited 03-07-2019 07:58 AM
I have spanning tree set up on Switch -1 for my management vlan which is the root (Mgmt vlan is on all switches). I have 4 switches that do have the management vlan on them in addition to a SAN VLAN. Switch 1 does not have the SAN VLAN active. Is it possible to implement STP on the SAN VLAN for Switches 3,4,5,6 with lets say Switch 5 as the root? So Switch 1 is the root for Mgmt VLAN and Switch 5 is the root for VLAN 200. will this work?
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07-25-2012 12:36 PM
Hi Anthony,
Yes, what you propose is possible without problems. You simply configure the STP priority on the intended root switch for the particular VLAN to a sufficiently low value so that it becomes the root switch for the particular VLAN. Cisco switches run so-called Per-VLAN Spanning Tree (PVST) or its improved version Rapid PVST that allows for separate and independent STP settings for each VLAN.
Best regards,
Peter
