Hello, I would also guess somthing in that direction if it was general/reproduceble behaviour, but why does that happen only on this port ? I have lots of ports with similar config (mode trunk, everything tagged) on several boxes and this is the only one listed in "show spanning-tree".
Config samples: interface GigabitEthernet7/2 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 666,1153 switchport mode trunk load-interval 30 end interface GigabitEthernet7/16 description custsw2-dus1 A16 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 1253,1606 switchport mode trunk mtu 9216 load-interval 30 end interface TenGigabitEthernet8/2 switchport switchport trunk encapsulation dot1q switchport trunk allowed vlan 1122,1142,1293,1421,1429,1476,3404,3405 switchport trunk allowed vlan add 3408-3410 switchport mode trunk mtu 9216 load-interval 30 end Only 7/16 is listed and there is nothing on the config beside the above as far as I see: edge1-dus3#sh running-config | inc 7/16 interface GigabitEthernet7/16 edge1-dus3# kind regards Rolf > You're using 802.1q, which uses an untagged native VLAN for things like > STP > BPDUs, CDP, VTP, etc ,etc. Even though you pruned off VLAN 1 via the > allowed VLANs command, the native VLAN will still be used for > switch-generated protocols like those listed above. Only transit-traffic > is > denied by pruning. If you change the native VLAN to something other than > one (do it on both sides, or wacky/painful things can happen), you should > see VLAN 1 no longer on that port. > > Chuck > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of "Rolf Hanßen" > Sent: Tuesday, March 12, 2013 1:34 PM > To: [email protected] > Subject: [c-nsp] STP active/listed on wrong port > > Hello list, > > do you have an explanation why STP thinks Gi7/16 belongs to vlan 1 ? > > edge1-dus3#sh spanning-tree > > VLAN0001 > Spanning tree enabled protocol ieee > Root ID Priority 32769 > Address 5475.d0a6.75c0 > This bridge is the root > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > > Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) > Address 5475.d0a6.75c0 > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > Aging Time 300 > > Interface Role Sts Cost Prio.Nbr Type > ------------------- ---- --- --------- -------- > -------------------------------- > Gi7/16 Desg FWD 4 128.1552 P2p > > > Interface Config: > interface GigabitEthernet7/16 > description custsw2-dus1 A16 > switchport > switchport trunk encapsulation dot1q > switchport trunk allowed vlan 1253,1606 switchport mode trunk mtu 9216 > load-interval 30 end > > STP is disabled on all other vlans: > no spanning-tree vlan 2-4000 > > Gi7/16 is not listed here: > > edge1-dus3#sh vlan id 1 > > VLAN Name Status Ports > ---- -------------------------------- --------- > ------------------------------- > 1 default active Gi1/5, Gi1/8, Gi1/13, > Gi1/25, Gi1/27, Gi1/48, Te4/1, Gi6/1, Gi7/1, Gi7/3, Gi7/4, Gi7/5, Gi7/6, > Gi7/7, Gi7/8, Gi7/9, Gi7/10, Gi7/11, Gi7/12, Gi7/13, Gi7/14, Gi7/15, > Gi7/17, > Gi7/18, Gi7/19 > Gi7/20, Gi7/21, Gi7/22, > Gi7/23, Gi7/24 > > VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 > Trans2 > ---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ > ------ > 1 enet 100001 1500 - - - - - 0 0 > > Remote SPAN VLAN > ---------------- > Disabled > > Primary Secondary Type Ports > ------- --------- ----------------- > ------------------------------------------ > > > Port is up and works fine: > > edge1-dus3#sh int Gi7/16 > GigabitEthernet7/16 is up, line protocol is up (connected) > Hardware is C6k 1000Mb 802.3, address is 001d.a246.3743 (bia > 001d.a246.3743) > Description: custsw2-dus1 A16 > MTU 9216 bytes, BW 1000000 Kbit/sec, DLY 10 usec, > reliability 255/255, txload 6/255, rxload 6/255 > Encapsulation ARPA, loopback not set > Keepalive set (10 sec) > Full-duplex, 1000Mb/s, media type is LX > input flow-control is off, output flow-control is off > Clock mode is auto > ARP type: ARPA, ARP Timeout 04:00:00 > Last input 00:00:00, output never, output hang never > Last clearing of "show interface" counters never > Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0 > Queueing strategy: fifo > Output queue: 0/40 (size/max) > 30 second input rate 27117000 bits/sec, 3517 packets/sec > 30 second output rate 24383000 bits/sec, 2860 packets/sec > 32078138057 packets input, 32998390284372 bytes, 0 no buffer > Received 524965 broadcasts (173874 multicasts) > 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored > 0 watchdog, 0 multicast, 0 pause input > 0 input packets with dribble condition detected > 13839785752 packets output, 9991981200426 bytes, 0 underruns > 0 output errors, 0 collisions, 3 interface resets > 0 unknown protocol drops > 0 babbles, 0 late collision, 0 deferred > 0 lost carrier, 0 no carrier, 0 pause output > 0 output buffer failures, 0 output buffers swapped out > > > edge1-dus3#sh version > Cisco IOS Software, c7600s72033_rp Software > (c7600s72033_rp-ADVIPSERVICESK9-M), Version 15.1(2)S, RELEASE SOFTWARE > (fc1) > > Hardware is Cisco 7609-S, Sub720-3BXL, Slot 7 is a WS-X6724-SFP > > kind regards > Rolf Hanßen > > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
