[c-nsp] Mysterious tunnel interfaces

[Adrian Turcu]

 only for fixing:
maybe add to your list "sh run inter tu0" , "sh run inter tu2", etc for all your mysterious tunnels and a "sh run full", edit to remove any trace of mystery, copy it as startup-config in your nvram,
then reload the router.
if you want to go to extremes, you can erase the config all together and start all over with only what's needed


On 12/08/10 07:02, Tassos Chatzithomaoglou wrote:
> "sh ip pim tunnel" might give you more info.
> In later releases i have seen two tunnels (pim encap/decap) created automatically.
>
> -- 
> Tassos
>
> Ivan wrote on 12/08/2010 07:22:
>>> I was working on a ISR 1941 with 15.0(1)M2.  I am running DMVPN on it
>>> and using one tunnel interface.  (Tunnel 1).  No other tunnel
>>> interfaces are configured on the router.  However when I do "show int
>>> summary" I get this;
>>>
>>> #sh int summary
>>>
>>>   *: interface is up
>>>   IHQ: pkts in input hold queue     IQD: pkts dropped from input queue
>>>   OHQ: pkts in output hold queue    OQD: pkts dropped from output queue
>>>   RXBS: rx rate (bits/sec)          RXPS: rx rate (pkts/sec)
>>>   TXBS: tx rate (bits/sec)          TXPS: tx rate (pkts/sec)
>>>   TRTL: throttle count
>>>
>>>    Interface              IHQ   IQD  OHQ   OQD  RXBS RXPS  TXBS TXPS TRTL
>>> ------------------------------------------------------------------------
>>> * GigabitEthernet0/0       0     0    0     0  6000    5  6000    5    0
>>>    GigabitEthernet0/1       0     0    0     0     0    0     0    0    0
>>> * Serial0/0/0              0     0    0     0  3000    3  2000    2    0
>>>    NVI0                     0     0    0     0     0    0     0    0    0
>>> * Tunnel0                  0     0    0     0     0    0     0    0    0
>>> * Tunnel1                  0     0    0    10  1000    2  1000    2    0
>>> * Tunnel2                  0     0    0     0     0    0     0    0    0
>>> * Tunnel3                  0     0    0     0     0    0     0    0    0
>>>
>>> I thought may be something got left behind while I was monkeying
>>> around in it so I reloaded the router and the tunnel 0,2,3 are still
>>> there and it says it's up.   None of those interfaces are in the
>>> startup or running-config.
>>>
>>> What is going on here?  My other routers with similar config on a 1841
>>> with 12.4(15)T* doesn't have this issue.  It doesn't seem to be
>>> affecting the routing of traffic but it's really bothering me.
>>>
>>> -Jay
>>>      
>> I have seen similar on ASRs.  From memory I think there were some of the
>> mystery tunnels and then quite a few more after enabling multicast..
>> Would be great to see an explaination though.
>>
>> Cheers
>>
>> Ivan
>>
>> _______________________________________________
>> cisco-nsp mailing list  cisco-nsp at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-nsp
>> archive at http://puck.nether.net/pipermail/cisco-nsp/
>>
>>    
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/