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Author Topic: spanning tree config?  (Read 2343 times)

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Offline nurhidayat

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spanning tree config?
« on: June 23, 2014, 05:47:00 AM »
Dear all,

I'm new to avaya/nortel switch configuration.
According to the picture attached, What is the best configuration if I want to configure SW4 to have two connection to the core switch ERS8600?
If using STP, on which switch should I activate STP connection?
I never configure STP before,please give examples.
Thank you.

PS: All links are gigabit ethernet.


Offline Telair

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Re: spanning tree config?
« Reply #1 on: June 23, 2014, 01:07:59 PM »
From your diagram, you would have to look at enabling spanning tree between SW1, SW2, SW3 and SW4 to be able to provide a loop-free network.  A possible problem could be what if STP decided that the link between SW1 and SW3 needs to be disabled?  Then the path between the core and switch SW3 is going through two other switches beforehand now.

Offline nurhidayat

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Re: spanning tree config?
« Reply #2 on: June 23, 2014, 09:05:54 PM »
Can I config SW4 to have failover connection and have preferred path to core switch via SW2 ?

Offline Telair

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Re: spanning tree config?
« Reply #3 on: June 25, 2014, 01:48:42 AM »
Sure you can play with the spanning tree values, but STP is like OSPF in that I find it's just better to leave it be and instead fix the problem.  Fiddling with the specific values just leads to trouble down the line when an update changes the values or something doesn't like the different values.

Offline nurhidayat

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Re: spanning tree config?
« Reply #4 on: June 29, 2014, 10:00:12 PM »
thank you Telair
I will use it just for backup link. Not using STP. Cause many things to change.