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New Member

STP going though different states

Hello everybody, excuse me in advance if this type of issue has been posted before I'm just going crazy looking for the source of this problem.

Our client has a REAAAALLLY big Switched network and lately he has been noticing an increase of the traffic going through trunk links between two switches, he took the log and sent it to us and here it is:

SW1:

-------------------output ommited----------------------------

2010 Oct 21 16:57:57 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/4 deleted from vlan 193 (EthChnlConfig)
2010 Oct 21 16:58:15 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 6/4 state in VLAN 193 changed to blocking
2010 Oct 21 16:58:15 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 6/4 state in VLAN 193 changed to listening
2010 Oct 21 16:58:29 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 6/4 state in VLAN 193 changed to learning
2010 Oct 21 16:58:44 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/4 state in VLAN 193 changed to forwarding
2010 Oct 21 17:42:17 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 193: New root port 3/15. New Root mac address is 00-0b-45-f7-88-c0.
2010 Oct 21 17:42:17 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/4 deleted from vlan 193 (EthChnlConfig)
2010 Oct 21 17:42:41 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 6/4 state in VLAN 193 changed to blocking
2010 Oct 21 17:42:41 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 6/4 state in VLAN 193 changed to listening
2010 Oct 21 17:42:55 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 6/4 state in VLAN 193 changed to learning
2010 Oct 21 17:43:10 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/4 state in VLAN 193 changed to forwarding
2010 Oct 21 17:43:49 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 193: New root port 3/15. New Root mac address is 00-0b-45-f7-88-c0.
2010 Oct 21 17:43:49 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/4 deleted from vlan 193 (EthChnlConfig)
2010 Oct 21 17:44:07 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 6/4 state in VLAN 193 changed to blocking
2010 Oct 21 17:44:07 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 6/4 state in VLAN 193 changed to listening
2010 Oct 21 17:44:21 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 6/4 state in VLAN 193 changed to learning
2010 Oct 21 17:44:36 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/4 state in VLAN 193 changed to forwarding
2010 Oct 22 00:17:13 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 3/15. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 22 00:17:13 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 5/12 deleted from vlan 192 (EthChnlConfig)
2010 Oct 22 00:17:14 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 199: New root port 3/15. New Root mac address is 00-0b-45-f7-88-c6.
2010 Oct 22 00:17:14 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/26 deleted from vlan 199 (EthChnlConfig)
2010 Oct 22 00:17:14 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 225: New root port 3/15. New Root mac address is 00-0b-45-f7-88-e0.
2010 Oct 22 00:17:14 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 5/14 deleted from vlan 225 (EthChnlConfig)
2010 Oct 22 00:17:31 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 5/12 state in VLAN 192 changed to forwarding
2010 Oct 22 00:17:31 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/26 state in VLAN 199 changed to forwarding
2010 Oct 22 00:17:31 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 5/14 state in VLAN 225 changed to forwarding
2010 Oct 22 00:19:42 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 3/15. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 22 00:19:42 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 5/12 deleted from vlan 192 (EthChnlConfig)
2010 Oct 22 00:19:42 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 199: New root port 3/15. New Root mac address is 00-0b-45-f7-88-c6.
2010 Oct 22 00:19:42 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/26 deleted from vlan 199 (EthChnlConfig)
2010 Oct 22 00:19:42 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 225: New root port 3/15. New Root mac address is 00-0b-45-f7-88-e0.
2010 Oct 22 00:19:42 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 5/14 deleted from vlan 225 (EthChnlConfig)
2010 Oct 22 00:20:02 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 5/12 state in VLAN 192 changed to forwarding
2010 Oct 22 00:20:02 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/26 state in VLAN 199 changed to forwarding
2010 Oct 22 00:20:02 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 5/14 state in VLAN 225 changed to forwarding
2010 Oct 22 00:20:25 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 225: New root port 3/15. New Root mac address is 00-0b-45-f7-88-e0.
2010 Oct 22 00:20:25 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 5/14 deleted from vlan 225 (EthChnlConfig)
2010 Oct 22 00:20:36 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 3/15. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 22 00:20:36 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 5/12 deleted from vlan 192 (EthChnlConfig)
2010 Oct 22 00:20:36 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 199: New root port 3/15. New Root mac address is 00-0b-45-f7-88-c6.

-------------------output ommited----------------------------

And SW2:

-------------------output ommited----------------------------

2010 Oct 25 14:46:50 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/4 deleted from vlan 193 (EthChnlConfig)
2010 Oct 25 14:47:10 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 6/4 state in VLAN 193 changed to blocking
2010 Oct 25 14:47:10 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 6/4 state in VLAN 193 changed to listening
2010 Oct 25 14:47:24 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 6/4 state in VLAN 193 changed to learning
2010 Oct 25 14:47:39 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/4 state in VLAN 193 changed to forwarding
2010 Oct 25 14:48:14 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 193: New root port 0/0. New Root mac address is 00-0b-45-f7-88-c0.
2010 Oct 25 14:48:14 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 6/4 deleted from vlan 193 (EthChnlConfig)
2010 Oct 25 14:48:32 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 6/4 state in VLAN 193 changed to blocking
2010 Oct 25 14:48:32 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 6/4 state in VLAN 193 changed to listening
2010 Oct 25 14:48:46 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 6/4 state in VLAN 193 changed to learning
2010 Oct 25 14:49:01 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 6/4 state in VLAN 193 changed to forwarding
2010 Oct 26 08:36:02 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 0/0. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 26 08:36:02 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/17 deleted from vlan 192 (EthChnlConfig)
2010 Oct 26 08:36:03 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 203: New root port 0/0. New Root mac address is 00-0b-45-f7-88-ca.
2010 Oct 26 08:36:03 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/19 deleted from vlan 203 (EthChnlConfig)
2010 Oct 26 08:36:21 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/17 state in VLAN 192 changed to forwarding
2010 Oct 26 08:36:21 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/19 state in VLAN 203 changed to forwarding
2010 Oct 26 08:37:51 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 0/0. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 26 08:37:51 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/17 deleted from vlan 192 (EthChnlConfig)
2010 Oct 26 08:37:52 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 203: New root port 0/0. New Root mac address is 00-0b-45-f7-88-ca.
2010 Oct 26 08:37:52 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/19 deleted from vlan 203 (EthChnlConfig)
2010 Oct 26 08:38:11 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/17 state in VLAN 192 changed to forwarding
2010 Oct 26 08:38:11 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/19 state in VLAN 203 changed to forwarding
2010 Oct 26 08:38:42 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 203: New root port 0/0. New Root mac address is 00-0b-45-f7-88-ca.
2010 Oct 26 08:38:42 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/19 deleted from vlan 203 (EthChnlConfig)
2010 Oct 26 08:38:50 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 0/0. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 26 08:38:50 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/17 deleted from vlan 192 (EthChnlConfig)
2010 Oct 26 08:39:09 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/17 state in VLAN 192 changed to forwarding
2010 Oct 26 08:39:09 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/19 state in VLAN 203 changed to forwarding
2010 Oct 26 08:40:31 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 192: New root port 0/0. New Root mac address is 00-0b-45-f7-88-bf.
2010 Oct 26 08:40:31 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/17 deleted from vlan 192 (EthChnlConfig)
2010 Oct 26 08:40:32 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 203: New root port 0/0. New Root mac address is 00-0b-45-f7-88-ca.
2010 Oct 26 08:40:32 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 7/19 deleted from vlan 203 (EthChnlConfig)
2010 Oct 26 08:40:50 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/17 state in VLAN 192 changed to forwarding
2010 Oct 26 08:40:50 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 7/19 state in VLAN 203 changed to forwarding
2010 Oct 27 08:22:21 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 350: New root port 0/0. New Root mac address is 00-0b-45-f7-89-5d.
2010 Oct 27 08:22:21 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 3/10 deleted from vlan 350 (EthChnlConfig)
2010 Oct 27 08:22:22 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 336: New root port 0/0. New Root mac address is 00-0b-45-f7-89-4f.
2010 Oct 27 08:22:22 GMT-4 -04:00 %SPANTREE-7-PORTDEL_SUCCESS: 3/11 deleted from vlan 336 (EthChnlConfig)
2010 Oct 27 08:25:33 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 3/11 state in VLAN 336 changed to blocking
2010 Oct 27 08:25:33 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 3/11 state in VLAN 336 changed to listening
2010 Oct 27 08:25:33 GMT-4 -04:00 %SPANTREE-6-PORTBLK: Port 3/10 state in VLAN 350 changed to blocking
2010 Oct 27 08:25:33 GMT-4 -04:00 %SPANTREE-6-PORTLISTEN: Port 3/10 state in VLAN 350 changed to listening
2010 Oct 27 08:25:47 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 3/11 state in VLAN 336 changed to learning
2010 Oct 27 08:25:47 GMT-4 -04:00 %SPANTREE-6-PORTLEARN: Port 3/10 state in VLAN 350 changed to learning
2010 Oct 27 08:26:02 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 3/11 state in VLAN 336 changed to forwarding
2010 Oct 27 08:26:02 GMT-4 -04:00 %SPANTREE-6-PORTFWD: Port 3/10 state in VLAN 350 changed to forwarding
2010 Oct 27 10:37:23 GMT-4 -04:00 %SPANTREE-5-ROOTCHANGE:Root changed for Vlan 2: New root port 0/0. New Root mac address is 00-0b-45-f7-88-01.

-------------------output ommited----------------------------

(the dates on the logs should be ignored )

So obviously it is experiencing a STP Loop and the traffic increase is due to the TC's.

Now I have read that we can start looking the servers with dual NICs because they could start bridging frames between them but that will point to be a trouble in only one Vlan... and by the behavior we can see that it all started with vlan 193 but then it started to change between vlans and the traffic increase is only in a timely manner so is not always present or else the whole link would be down.

Any comments? help?

Thank you in advance

1 REPLY
New Member

Re: STP going though different states

Anybody?

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