[support] tunnel deleted

[Romain KUNTZ]

Hi Shahriar,

The problem seems to come from your access router.
 From the MR logs:

Wed May 27 16:15:12 md_expire_router: expiring router  
fe80:0:0:0:20e:cff:fed0:a217 on iface wlan1 (5)
[...]
Wed May 27 16:15:12 mh_send: local CoA 2001:a:c:1:209:5bff:feb3:c5ab
Wed May 27 16:15:12 mn_pol_ext_cleanup:
Wed May 27 16:15:12 __tunnel_del: tunnel ip6tnl1 (97) from 2001:a:c: 
1:209:5bff:feb3:c5ab to 2001:a:b:0:0:0:0:1000 user count decreased to 0
Wed May 27 16:15:12 __tunnel_del: tunnel deleted
Wed May 27 16:15:12 bul_delete: Deleting bule

Your MR thinks the access router is not reachable anymore, and thus  
send a de-registration BU.
What is the lifetime of your RA sent by the access router? How  
frequently do you send RA on the link?

A bit later, the MR re-registers to its HA (I guess it received a RA  
from the AR) :

Wed May 27 16:15:14 md_update_router_stats: add coa 2001:a:c: 
1:209:5bff:feb3:c5ab on interface (5)
[...]
Wed May 27 16:15:14 process_first_home_bu: New bule for HA


This is why your MR keeps registering/deregistering with the HA. I  
guess you have some misconfiguration with your RA from the access  
router.

Cheers,
romain


On 2009/05/28, at 1:41, Abu Zafar Shahriar wrote:

> Thanks all.
>
> Captures and log files are attached. What I found that HA reaceives  
> BU sent from 2nd Interface of MR, and creates BE. But BE is not kept  
> till its lifetime (deleted after 3/4/5 seconds where lifetime is 60  
> secs.).
>
> BU/BACK capture files are sent in different email in compressed  
> format but awaiting moderator decision because of its size.
>
> --Shahriar
>
> --- On Wed, 5/27/09, Romain KUNTZ <kuntz at lsiit.u-strasbg.fr> wrote:
>
> From: Romain KUNTZ <kuntz at lsiit.u-strasbg.fr>
> Subject: Re: [support] tunnel deleted
> To: "Abu Zafar Shahriar" <shahriarou at yahoo.com>
> Cc: support at jules.nautilus6.org
> Date: Wednesday, May 27, 2009, 7:25 AM
>
> Hi,
>
> From the log we can see that the tunnel is alternatively created  
> then deleted, but the deletion is always triggered by a BU from the  
> MR.
>
> Does your BU sends for some reason a de-registration BU? Could you  
> send the MR logs too? And, if possible, a wireshark dump of the BU/ 
> BA exchange between the MR and the HA?
>
> Regards,
> romain
>
> On 2009/05/27, at 2:30, Abu Zafar Shahriar wrote:
>
> > Hi all,
> >
> > In our MCoA tesbed, one of the BE (among the two for two  
> interfaces) in HA is deleted before its lifetime expires (says user  
> count reach 0). Also, BU from one of the CoA is delayed till the  
> tunnel is deleted.
> >
> > Can anyone help me in this regard (I mean whats going on)? I  
> attach the log of HA with this mail.
> >
> > Thanks.
> >
> > --Shahriar
> >
> > <ha_log>_______________________________________________
> > Support mailing list
> > Support at ml.nautilus6.org
> > http://ml.nautilus6.org/mailman/listinfo/support
>
>
> <BC_HA><ha_log><MR_log.log>