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Spanning tree is invalid

guominquan
Level 1
Level 1

‎01-08-2007 10:38 PM - edited ‎03-05-2019 01:40 PM

HI,all

Two switches ,respectively,4506 with module 4306 of 6 GBIC cards and 2960-48 with two SFP interfaces,are connected to respective optical interface (two GBICs on 4306 and SFP interface on 2960) using dual Fiber.BUT the two switches all became root,spanning tree is invalid.why?

thank you!

Best Respects!

Min Quant Kuo

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3 Replies 3

thestagman
Level 1
Level 1

‎01-09-2007 02:14 AM

What mode of spanning tree are you running on each switch and how many Vlans on each switch

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mbuillon
Level 1
Level 1

‎01-09-2007 05:07 AM

hi,

Are they in the same vtp domaine ?

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guominquan
Level 1
Level 1
In response to mbuillon

‎01-09-2007 06:03 PM

sorry

thestagman,mbuillon

I will check it,then give response to you.

thank you!

Respects!

Min Quant Kuo

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