From: stefan vogt (stefan-uwe_vogt@web.de)
Date: Sat Mar 08 2003 - 17:06:46 GMT-3
Hello Brian,
As expected, the point-to-point did the trick. :)
Many thanks for the explanation and your other valuable postings. Impressive and motivating.
BTW this was another expample for not do just cut&paste from CCO since
http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1826/products_feature_guide_chapter09186a008008017c.html
suggested to use a multipoint subinterface...
Thanks,
Stefan
"Brian Dennis" <brian@labforge.com> schrieb am 08.03.03 19:34:23:
>
> Stefan,
> You have it right. The "atm ilmi-pvc-discovery" command with the
> "subinterface" option is used to automatically map the PVC to a
> subinterface and isn't intended to be removed. In your case you
> discovered the 9/120 PVC and the command automatically assigned it to
> the .9 subinterface (VPI = subinterface #).
>
> Your issue is something different. The PVC (VPI/VCI) was assigned to a
> multipoint subinterface which means a method to "map" layer 3 (IP
> address) to layer 2 (ATM VPI/VCI) is needed. You could use InARP or
> manually map the layer 3 address to the layer 2 address. If a
> point-to-point subinterface was used no mapping would be needed as all
> layer 3 addresses are "mapped" to the one layer 2 address.
>
> As a side note when using this command in the real world I've always
> used it with point-to-point subinterfaces.
>
> Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security)
> brian@labforge.com
> http://www.labforge.com
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> stefan vogt
> Sent: Saturday, March 08, 2003 7:19 AM
> To: ccielab@groupstudy.com; Peter
> Subject: Re: Re: atm ilmi-pvc-discovery
>
> Hello Peter,
>
> Thanks for your answer - seems I got the purpose of atm
> ilmi-pvc-discovery completely wrong.
> Just to confirm, you are saying that atm ilmi-pvc-discovery is just to
> discover the vpi/vci pair and not for permanent use in a running config?
>
> Thanks,
> Stefan
>
>
> "Peter" <peter@cyscoexpert.com> schrieb am 08.03.03 13:54:02:
> >
> > After discovering PVC remember the VPI/VCI pair, go ahead and remove
> "atm
> > ilmi-pvc-discovery subinterface" command from the major interface, go
> back
> > to the subinterface and create the PVC you just discovered with "pvc
> > VPI/VCI" and type "inarp 1" under it. You should be able to ping the
> remote
> > side now.
> > After all the exercise was to discover the PVC.
> >
> > _____________________________
> > Peter
> > #7247 (R&S, Security)
> > CyscoExpert Corp.
> > 4433 W. Touhy Ave. Suite 410
> > Lincolnwood, IL 60712
> > Phone (847) 674-3392
> > Toll Free (866) CyscoXP (297-2697)
> > Fax (847) 674-2625
> >
> >
> > ----- Original Message -----
> > From: "stefan vogt" <stefan-uwe_vogt@web.de>
> > To: <ccielab@groupstudy.com>
> > Sent: Saturday, March 08, 2003 5:50 AM
> > Subject: atm ilmi-pvc-discovery
> >
> >
> > > Hello all,
> > >
> > > Just playing around with atm ilmi-pvc-discovery.
> > > My config looks like this:
> > > interface atm 2/0
> > > pvc 0/16 ilmi
> > > exit
> > > atm ilmi-pvc-discovery subinterface
> > > exit
> > > !
> > > interface atm 2/0.9 multipoint
> > > ip address 172.16.10.6 255.255.255.0
> > >
> > > This one looks good:
> > > r#sh atm vc
> > > VCD / Peak
> Avg/Min
> > Burst
> > > Interface Name VPI VCI Type Encaps Kbps Kbps
> > Cells Sts
> > > 2/0 4 0 16 PVC ILMI 155000
> > UP
> > > 2/0.9 11 9 120 PVC-D SNAP 155000
> > UP
> > >
> > > But ping to remote router fails. When doing debug ip packet:
> > > 17:05:27: IP: s=172.16.10.6 (local), d=172.16.10.7 (ATM2/0.9), len
> 100,
> > sending
> > > 17:05:27: IP: s=172.16.10.6 (local), d=172.16.10.7 (ATM2/0.9), len
> 100,
> > encapsul
> > > ation failed.
> > >
> > > So I assume there is some mapping for the remote ip address missing.
> I
> > searched CCO, but found no hint how to do this when using atm
> > ilmi-pvc-discovery...
> > >
> > > Any input is welcome.
> > > -Stefan
> > >
> > >
> >
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