RE: OSPF on 32 bit dialer interface

"should work" and "does work" are two different things in IOS though ;)

Brian McGahan, CCIE #8593 (R&S/SP/Security)
bmcgahan_at_INE.com<mailto:bmcgahan_at_INE.com>

Internetwork Expert, Inc.
http://www.INE.com

From: Tauseef Khan [mailto:tasneemjan_at_googlemail.com]
Sent: Wednesday, November 28, 2012 9:52 AM
To: Brian McGahan
Cc: Mohammad Mousa; Cisco certification
Subject: Re: OSPF on 32 bit dialer interface

Thanks Brain, you are right but in my humbel opinion with a host ip address
negotiated under dialer interface and ppp encap it should work even though the
mask is not the same. As there is no no peer neigh under dialer interface it
would install /32 routes on both client and servers routing table as directly
connected networks on dilaer interface on Client side and virtualaccess
interface on Server side. So OSPF should not have any problem have adjacency.
regards
On 28 November 2012 15:40, Brian McGahan
<bmcgahan_at_ine.com<mailto:bmcgahan_at_ine.com>> wrote:
You need to assign the IP address through DHCP not through IPCP. Instead of
"ip address negotiated" on the client side say "ip address dhcp" and use a
DHCP pool instead of a local pool on the server. This way the server can
assign any mask that you want to the client, and both the client and the
server will be on the same IP subnet then.

HTH,

Brian McGahan, CCIE #8593 (R&S/SP/Security)
bmcgahan_at_INE.com<mailto:bmcgahan_at_INE.com>

Internetwork Expert, Inc.
http://www.INE.com

-----Original Message-----
From: nobody_at_groupstudy.com<mailto:nobody_at_groupstudy.com>
[mailto:nobody_at_groupstudy.com<mailto:nobody_at_groupstudy.com>] On Behalf Of
Tauseef Khan
Sent: Wednesday, November 28, 2012 8:56 AM
To: Mohammad Mousa
Cc: Cisco certification
Subject: Re: OSPF on 32 bit dialer interface

Thnaks Mousa, I have removed the ip opsf mtu-ignore and ip osp netwo commands
from physical interfaces as well. still not working. I will do more debugging
and send the print.
Regards

On 28 November 2012 14:52, Mohammad Mousa
<mohd-mousa_at_hotmail.com<mailto:mohd-mousa_at_hotmail.com>> wrote:

> Tauseef,
>
> I just finished the lab, It works fine, just remove the no peer
> neighbor-route and without any OSPF network type configuration.
>
> --
> Mohammad Mousa
> CCIE #36990
> On Nov 28, 2012, at 5:20 PM, Mohammad Mousa wrote:
>
> > Tauseef,
> >
> > Try to remove the no peer neighbor-route command, you configured the
> > virtual-template interface as /24 and you give the dialer side /32
> > host
> route.
> > When you remove the no peer neighbor command, you will install /32
> > host
> route
> > on each side. also as Joe said you don't have to configure ospf
> > networks type.
> >
> >
> > Try this and let me know what will happen.
> >
> >
> > --
> > Mohammad Mousa
> > CCIE 336990
> >
> >
> >
> >
> >
> >
> >
> > On Nov 28, 2012, at 2:24 PM, Tauseef Khan wrote:
> >
> >> sorry made a mistake in pasting
> >> ip local-pool 6.6 172.31.255.254
> >>
> >> !
> >> peer default ip address 6.6
> >>
> >> Regrads
> >>
> >> On 28 November 2012 11:22, Mohammad Mousa
<mohd-mousa_at_hotmail.com<mailto:mohd-mousa_at_hotmail.com>>
> wrote:
> >> Before I lab it up, I noticed your pool name is different than of
> >> you've
> > called it.
> >>
> >>> nterface Virtual-Template16
> >>
> >>> peer default ip address pool 1.6
> >>
> >>
> >>> ip local-pool 6.6 172.31.255.254
> >>
> >> Did you receive ip address on the Dialer side?
> >>
> >> --
> >> Mohammad Mousa
> >> CCIE #36990
> >>
> >>
> >>
> >> On Nov 28, 2012, at 2:03 PM, Tauseef Khan wrote:
> >>
> >>> Please find below the configs
> >>> server:R1
> >>>
> >>> bba-group pppoe CISCO
> >>> virtual-template 16
> >>> !
> >>> interface Gigabit0/0
> >>> no ip address
> >>> ip ospf network point-to-multipoint ip ospf mtu-ignore duplex auto
> >>> speed auto pppoe enable group CISCO end
> >>>
> >>> !
> >>> interface Virtual-Template16
> >>> mtu 1492
> >>> ip address 172.31.255.1 255.255.255.0 ip ospf network
> >>> point-to-multipoint ip ospf mtu-ignore peer default ip address
> >>> pool 1.6 ppp authentication chap end
> >>>
> >>> usename R2 password pass
> >>>
> >>> ip local-pool 6.6 172.31.255.254
> >>>
> >>> __________________________________________________
> >>>
> >>> Client R2:
> >>> interface FastEthernet0/0
> >>> no ip address
> >>> ip ospf network point-to-multipoint ip ospf mtu-ignore speed auto
> >>> half-duplex pppoe enable pppoe-client dial-pool-number 16 !
> >>>
> >>> interface Dialer16
> >>> mtu 1492
> >>> ip address negotiated
> >>> encapsulation ppp
> >>> ip ospf network point-to-multipoint dialer pool 16 dialer
> >>> idle-timeout 0 dialer persistent no peer neighbor-route ppp chap
> >>> password 0 pass end
> >>>
> >>> R2:
> >>> sh ip ospf int br
> >>> Interface PID Area IP Address/Mask Cost State Nbrs
> F/C
> >>>
> ______________________________________________________________________
> ____
> >>> Di16 1 2
172.31.255.254/32<http://172.31.255.254/32> 1785 P2MP
> 0/0
> >>>
> ______________________________________________________________________
> ____
> >>>
> >>> Kind regards
> >>>
> >>> Tauseef
> >>> mobile: +44 7837209187<tel:%2B44%207837209187>
> >>>
> >>>
> >>> On 28 November 2012 10:10, Mohammad Mousa
<mohd-mousa_at_hotmail.com<mailto:mohd-mousa_at_hotmail.com>>
> wrote:
> >>> Post your full configs so we can check together. Did you change
> >>> the
> MTU?
> >>>
> >>> --
> >>> Mohammad Mousa
> >>> CCIE #36990
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> On Nov 28, 2012, at 12:28 PM, Tauseef Khan wrote:
> >>>
> >>>> Appreciate if some one could help. I have ospf running on 2
> >>>> routers
> R1
> > and
> >>>> R2.
> >>>> R2 is a PPPoE client and R1 is the server. R2 has a negotiated
> >>>> ip
> > address
> >>>> on the dialer interface from R1 which is host (/32) address while
> >>>> R1
> has
> > a
> >>>> /29 bit Ip address on its interface facing towards Client.
> >>>> OSPF adj is not coming up between the client and Server On client
> >>>> dialer int and Server int I have ip ospf network
> >>>> point-to-multipoint i also tried no peer neighbor-route on client
> >>>> dialer interface.
> >>>>
> >>>> debugs on the client side show:
> >>>> OSPF: Rcv pkt from 172.31.29.1, Dialer16, area 0.0.0.3 : src not
> >>>> on
> the
> >>>> same network
> >>>>
> >>>> I have tried changing the network type to poin-to-poitn as well
> >>>> but no
> > adj
> >>>>
> >>>> Regards
> >>>>
> >>>>
> >>>> Blogs and organic groups at http://www.ccie.net
> >>>>
> >>>>
> ______________________________________________________________________
> _
> >>>> Subscription information may be found at:
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> >
> >
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> >
> > ____________________________________________________________________
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Received on Wed Nov 28 2012 - 09:55:33 ART