How do we enforce a switch to not be the spanning-tree root for any vlan

[cciebull 1]

Hi all,

How to make a switch to not be the root for any vlan without changing the priority.

My solution is to enable root guard on all the attached switches

In the below topology SW1 is connected to both SW2 and SW3. I dont want SW1 to be the root at any time.

 

SW1----------(root guard)SW2--------(root)SW4

|-----------(root guard) SW3------|(root)

 

Please let me know whether this solution is right. I dont think enabling uplinkfast(according to K2+) in SW1 will help.

 

 

Thanks

cciebull

[Peterjj 1]

Test it. Configuring uplinkfast will indirectly change your switch priority

[cciebull 1]

Even with uplinkfast we are changing only the priority to acheive our goal.

I got this interesting thread abt the same issue ...so rootguard is the only option to enforce

 

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[ccieinprep 1]

Well if the Lab Says that u cannot change the Priority of any of the Switch.. Uplink-fast is Wrong.. So the Only Solution is Enable Root Guard on the Trunks of Other Switches..

 

Regards,

 

CCIEINPREP

[robzombie 0]

sounds like rootguard bro

[proskynesis 0]

sounds like rootguard bro

 

 

You should be use "root guard"

Edited October 27, 2010 by proskynesis