[c-nsp] STP funnies - moving from forwarding to forwarding

[Daniel Roesen]

Hi,

%SPANTREE-SP-6-PORT_STATE: Port Gi4/1 instance 100 moving from
forwarding to forwarding

This message comes in irregular intervals:

May  2 16:18:52.397 CEST
May  3 00:33:56.521 CEST
May  3 00:38:21.368 CEST
May  3 00:40:09.240 CEST
May  3 00:40:31.392 CEST
May  3 05:01:27.559 CEST
May  3 05:01:32.399 CEST
May  3 14:37:48.635 CEST
May  3 15:13:35.544 CEST
May  4 00:33:57.542 CEST
May  4 00:38:14.874 CEST
May  4 00:39:33.046 CEST
May  4 00:40:22.966 CEST
May  4 05:01:27.725 CEST
May  4 05:01:33.497 CEST
May  4 15:09:08.701 CEST
May  4 15:16:33.355 CEST
May  4 15:39:45.707 CEST

System image file is "sup-bootflash:s72033-pk9sv-mz.122-18.SXD6.bin"

spanning-tree mode rapid-pvst

interface GigabitEthernet4/1
 no ip address
 logging event link-status
 logging event spanning-tree status
 switchport
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 100,702
 switchport mode trunk
 switchport nonegotiate
 no cdp enable
 spanning-tree portfast trunk
end

#sh spanning-tree int g4/1
Vlan             Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- -------------
VLAN0100         Desg FWD 4         128.385  Edge P2p
VLAN0702         Desg FWD 4         128.385  Edge P2p

#sh spanning-tree int g4/1 detail
 Port 385 (GigabitEthernet4/1) of VLAN0100 is designated forwarding
   ...
   Number of transitions to forwarding state: 19
   The port is in the portfast mode by portfast trunk configuration
   Link type is point-to-point by default
   BPDU: sent 100744, received 0

 Port 385 (GigabitEthernet4/1) of VLAN0702 is designated forwarding
   ...
   Number of transitions to forwarding state: 1
   The port is in the portfast mode by portfast trunk configuration
   Link type is point-to-point by default
   BPDU: sent 100744, received 0


Other end is a 7200 with unknown IOS release. Interestingly, it happens
only on VLAN 100, not 702. No other log entries on the switch.

Any ideas?


Best regards,
Daniel

-- 
CLUE-RIPE -- Jabber: dr at cluenet.de -- dr at IRCnet -- PGP: 0xA85C8AA0