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Good ways to Test spanning tree between switches

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Last Modified: 2012-05-05
hi

I'm currently testing spanning tree (1w) between 2 alcatel 7800 switches.

the switches are conected using 2 gigabit fibre cables over 4 cards


switch one                                              switch 2

port 1/1 ----------------------------------------port 1/1       (link 1)

port 2/1----------------------------------------port 2/2         ( link 2)

with the spanning tree enabled i've got port 2/2 blocking, with the rest forwarding packets.

i have a laptop conected into an ethernet port on switch 1, ping -t to swtich 2.

when i remove link 1, port 2/2 starts forwarding the packets, I have maybe 1 timeout on the ping then it starts pinging again.

the thing is after you remove the cable once, then continualy remove it to test its resilience no timeouts occur. now bear in mind im using normal spanning tree and not rapid. I'd like to know if there's a better way I can test the spanning tree protocol because just sending  a Ping isn't informative enough. I'm using a work laptop so i'm not gona be able to put any programs on without permission, so if anyones got any ideas, I'm all ears.

I'm going to be testing Rapid spanning tree as well, so I need to show a clear difference between them, showing the benefits or drawbacks using my testing.

thanks

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