Re: Peer Neighbor Route

Brian ,

please show us with examle for better understanding

On Thu, May 31, 2012 at 8:43 AM, Brian Dennis <bdennis_at_ine.com> wrote:

> It's also needed when one side negotiates its IP address via IPCP (ip
> address negotiated or ip address pool <pool>) and the subnet mask is not
> requested/offered. This means the remote side will use a /32 subnet mask
> for the IP address it receives from the remote end since one was not
> learned via IPCP. The /32 route to the remote end that is installed is
> needed to enable reachability between the two end points since both ends
> aren't on the same subnet due to the fact they /32 subnet masks. You
> could resolve this other ways but leaving the peer neighbor-route command
> on is the simplest.
>
> If the subnet mask is received via IPCP then the /32 route to the remote
> end isn't installed as the default for the peer neighbor-route command
> changes from on to off for the receiving side on the dynamic IP address.
>
> If you all would like to see examples let me know.
>
> Brian Dennis, CCIEx5 #2210 (R&S/ISP-Dial/Security/SP/Voice)
> bdennis_at_ine.com
>
> INE, Inc.
> http://www.INE.com
>
>
>
>
>
>
>
>
> On 5/30/12 8:43 PM, "Tom Kacprzynski" <tom.kac_at_gmail.com> wrote:
>
> >Marcin,
> >I think that the one place where you would need them, is if both
> >interfaces
> >are on a different subnet, which is possible with PPP. Without them you
> >won't be able to communicate.
> >
> >
> >Tom
> >
> >
> >On Wed, May 30, 2012 at 8:47 PM, Marcin Zgola <MZgola_at_netrixllc.com>
> >wrote:
> >
> >> Why would you ever need to have /32 network of your neighbor ppp
> >>interface
> >> in your routing table?
> >>
> >>
> >> Marcin Zgola | Netrix, LLC | 847.283.7400 |(Direct) 847.283.7328| (fax)
> >> 847.283.7610 | http://www.netrixllc.com/
> >> Internetwork Lead | CCIE# 18676 (Security)
> >>
> >>
> >> -----Original Message-----
> >> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
> >> Vincent Tay
> >> Sent: Wednesday, May 30, 2012 8:20 PM
> >> To: Arista Wirawan
> >> Cc: Cisco certification
> >> Subject: Re: Peer Neighbor Route
> >>
> >> Hi Arista,
> >>
> >> Tested. It works perfect by removing the peer neighbor-route. However,
> >>if
> >> to use ip address negotiable, peer neighbour will be needed. Is there
> >>any
> >> ways to overcome this as removing the peer neighbor-route is not an
> >>option
> >> anymore?
> >>
> >> Regards
> >>
> >> On Thu, May 31, 2012 at 7:23 AM, Arista Wirawan <aristaw_at_gmail.com>
> >>wrote:
> >>
> >> > The peer neighbor-route command on the interface serial with ppp
> >> > encapsulation will add the /32 route of the other end router.
> >> >
> >> > Try no peer neighbor-route both end, shut and mo shut.. those
> >> > additional
> >> > /32 route will be gone..
> >> >
> >> > Aris
> >> > CCIE #35534
> >> > Sent from my HTC
> >> >
> >> >
> >> > ----- Reply message -----
> >> > From: "Vincent Tay" <vtay.75_at_gmail.com>
> >> > To: "Ccielab_at_groupstudy.com" <ccielab_at_groupstudy.com>
> >> > Subject: Peer Neighbor Route
> >> > Date: Tue, May 29, 2012 11:49 PM
> >> >
> >> >
> >> > Hi all,
> >> >
> >> > I have some issue with peer neighbor route.
> >> >
> >> > Network Setup
> >> > EIGRP Domain
> >> > ________________________
> >> > |
> >> > |
> >> > |
> >> > |
> >> > OSPF 2 | OSPF 1
> >>|
> >> > R4
> >> > ------------PPPoE-----------------R3-------------------------------R2
> >> >
> >> >
> >> > R3 has three routes as below once the PPPoE has been setup.
> >> >
> >> > C 5.5.34.3/32 is directly connected, Dialer1
> >> > O 5.5.34.0/24 [110/1786] via 5.5.34.4, 00:14:17
> >> > C 5.5.34.4/32 is directly connected, Dialer1
> >> >
> >> > However on R2, it has only two routes as below.
> >> >
> >> > O IA 5.5.34.3/32 [110/1849] via 5.5.23.3, 00:14:13, Serial0/1
> >> > O IA 5.5.34.0/24 [110/1850] via 5.5.23.3, 00:14:13, Serial0/1
> >> >
> >> > The ospf network statement is correct using "network 5.5.34.0
> >> > 0.0.0.255 area 2" on R3. My question is what happen to 5.5.34.4 route.
> >> > It should appear in R2 as interarea routes right. Another question is
> >> > once i perform mutual redistribution on R3 and R2, i receive
> >> > 5.5.34.4/32 as external routes. Puzzled.
> >> >
> >> > Regards
> >> >
> >> >
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Received on Thu May 31 2012 - 12:57:33 ART