How do manually Change a Cost in STP?

Unanswered Question
Jul 21st, 2009


I have to paths to our data center. I would like to increase the path cost of the secondary link so that the primary link will be used for Vlan 1.

I have this problem too.
0 votes
  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Istvan_Rabai Tue, 07/21/2009 - 00:30

Config example for the secondary link:

conf t

interface gig1/0

spanning-tree vlan 1 cost 20



network_team Wed, 07/22/2009 - 01:08


attached is a current Cost flow for vlan 1 which works correctly all vlan1 traffic goes via the primary link and the blocking is done via the secondary link.

The proposed diagram we remove CS_2 from the network and connect the two cables into a layer 2 switch to directly connect the two networks when we do this the blocking moves from Dis_2 and we have intermittent connection on vlan 1. Could the problem be that Dis_2 doesnt block and this has caused the problem?


This Discussion