LACP Blocking

[networknaz]

show logging -a

Keys: W=Warning I=Information
M=Major D=Debug
---- Event Log listing: All Events Recorded ----
W 04/18/90 05:57:43 tftp: SENT error:1, msg: File not found
W 04/18/90 05:57:50 tftp: SENT error:1, msg: File not found
W 04/18/90 05:57:54 tftp: SENT error:1, msg: File not found
W 04/18/90 05:57:59 tftp: SENT error:1, msg: File not found
W 04/18/90 05:58:05 tftp: SENT error:1, msg: File not found
W 04/18/90 06:02:29 tftp: SENT error:1, msg: File not found
W 04/18/90 06:02:33 tftp: SENT error:1, msg: File not found
W 04/18/90 06:02:38 tftp: SENT error:1, msg: File not found
W 04/18/90 06:02:44 tftp: SENT error:1, msg: File not found
W 04/18/90 06:02:51 tftp: SENT error:1, msg: File not found
W 04/18/90 06:02:55 tftp: SENT error:1, msg: File not found
W 04/18/90 06:03:00 tftp: SENT error:1, msg: File not found
W 04/18/90 06:03:06 tftp: SENT error:1, msg: File not found
W 04/18/90 06:08:12 tftp: SENT error:1, msg: File not found
W 04/18/90 06:08:16 tftp: SENT error:1, msg: File not found
W 04/18/90 06:08:21 tftp: SENT error:1, msg: File not found

I 04/18/90 07:26:38 ports: port 8 is now off-line

I 04/18/90 07:35:38 ports: port 8 is Blocked by LACP
I 04/18/90 07:35:41 ports: port 8 is now on-line

I 04/18/90 07:41:29 ports: port 44 is now off-line
I 04/18/90 07:43:31 ports: port 44 is Blocked by LACP
I 04/18/90 07:43:34 ports: port 44 is now on-line

I 04/18/90 07:55:43 ports: port 11 is now off-line
I 04/18/90 07:55:46 ports: port 11 is Blocked by LACP

I 04/18/90 07:55:49 ports: port 11 is now on-line

I 04/18/90 07:55:59 ports: port 11 is now off-line

I 04/18/90 07:56:02 ports: port 11 is Blocked by LACP

I 04/18/90 07:56:05 ports: port 11 is now on-line

I 04/18/90 07:56:25 ports: port 11 is now off-line
I 04/18/90 07:56:28 ports: port 11 is Blocked by LACP
I 04/18/90 07:56:31 ports: port 11 is now on-line

I 04/18/90 08:19:16 ports: port 20 is now off-line
I 04/18/90 08:19:22 ports: port 20 is Blocked by LACP
I 04/18/90 08:19:25 ports: port 20 is now on-line

I 04/18/90 08:55:47 ports: port 44 is now off-line

I 04/18/90 09:00:27 ports: port 44 is Blocked by LACP

I 04/18/90 09:00:30 ports: port 44 is now on-line

[Joel Belizario]

See excerpt from this article:

http://www.hp.com/rnd/itmgrnews/bestpractices.htm

Link Aggregation Control Protocol (LACP) is a dynamic trunking/aggregation protocol that makes setting multiple point-to-point links a snap. It is a great idea and an IEEE standard.

The problem with LACP is that it will toggle ports to check for an active LACP link. This toggling will cause Apple and Novell clients to wig out big time. Look in your logs (show log) and count how many LACP offline/online messages you have.

[networknaz]

After disabling the LACP on all ports problem is resolved thanks a lot.

Regards

Network Nazzz..