[c-nsp] STP active/listed on wrong port
Rati , Berikaant Jokhadze
iinfo83 at gmail.com
Tue Mar 12 16:18:20 EDT 2013
Yes , Native vlan is untagged by default.
you can tag it by
vlan dot1q tag native
But you need to do it on both ends , or just change native vlan on interface
./Rati
On 03/13/2013 12:09 AM, Dan Brisson wrote:
> I think you mean "untagged" frames.
>
> -dan
>
>
>
> Sent from a mobile phone with a tiny keyboard
>
> On Mar 12, 2013, at 2:21 PM, "Harold 'Buz' Dale" <buz.dale at usg.edu> wrote:
>
>> Sure - It's a trunk. VLAN one is the native vlan the tagged frames flow over...
>>
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of "Rolf Hanßen"
>> Sent: Tuesday, March 12, 2013 13:34
>> To: cisco-nsp at puck.nether.net
>> 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
>>
>>
>>
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