Spannig tree loop

[senthil.natarajan]

Can anyone tell me how to detect a spanning tree loop easily ?

Thanks

Senthil Natarajan.

[vmiller]

switch cpu at 90-100% combined with a general slowdown to meltdown of the network. its not a pleasant experience.

[senthil.natarajan]

Apart from the CPU utilization, how exaclty can i pin point the location. Can you please list the detection methods.

Thanks

Sen

[DWAM_2]

Hello,

Detection :

Slow network.

Loose ping.

Network down.

Bad Communications.

Look Here : http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a00800951ac.shtml

Anyway :

- do a cartopgraphy network with root bridge.

- verify switches configurations (port-fast, uplink fast, stack-port,...)

- go on the switchs to see if you don't see topology change like using:

- sh spanning-tree

- sh spanning-tree vlan X ( Number of topology changes 64 last change occurred 00:20:05 ago)

Good luck.