Very serious spanning tree problems (I guess).

[Richard Brodie_1]

Is it OK to have "cdp run" command on all switches while using "spanning tree"?

Yes, that's fine.

[JMAlexandre]

Hi Richard,

I've reconfigured our core switches according with the purposed configuration and for now all seems OK.

The following commands on our floor switches only "worked" on the 2610-24 (J9085A), the 2626 (J4900B) with H.10.83 firmware (we've 13 of them) ignored them:

spanning-tree force-version RSTP-operation
spanning-tree 1-24 admin-edge-port

I don't know why but these don't show up in "show config", probably they don't support these.

The core #2, 2824 (J4903A) with I.10.77 firmware, ignores the "spanning-tree force-version RSTP-operation" at least in "show config", also "show spanning-tree" looks like this:

Rapid Spanning Tree (RSTP) Information

STP Enabled : Yes
Force Version : RSTP-operation

Switch Priority : 4096 Hello Time : 2
Max Age : 20 Forward Delay : 15

Topology Change Count : 53
Time Since Last Change : 3 hours

Why the "Switch Priority : 4096" if in config is "spanning-tree priority 1".

We continue to see the following on our floor switches:

"Today 12:21:01","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is now on-line"
"Today 12:21:01","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is Blocked by STP"
"Today 12:20:58","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is Blocked by LACP"
"Today 12:20:56","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is now off-line"
"Today 12:20:39","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is Blocked by STP"
"Today 12:20:39","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is Blocked by LACP"
"Today 12:20:37","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is now off-line"
"Today 12:20:35","USER","INFO","10.10.0.103","ports:","","Syslog"," port 11 is Blocked by LACP"

Is this a normal behavior?

Well, overall I think that, with your help, the switches are now properly configured, maybe some more fine tunning if it's necessary.

Thanks once more.

Cheers,

Joao M. Alexandre