Re: Peer Neighbor Route

Hi Brian,

Thanks for the explanation.

On Thu, May 31, 2012 at 10:07 AM, Brian McGahan <bmcgahan_at_ine.com> wrote:

> It comes from legacy analog dial. In many cases you would dial into a NAS
> that was not on the same IP subnet as the DHCP pool that the client was
> leasing from. To solve routing the NAS would simply install a host route to
> the client via the virtual access that they came in on.
>
> In today's designs the peer neighbor route has less practical application.
> One of them though would be to unnumbered all your PPP links (e.g. OC-48,
> OC-192, etc.) to a loopback, and then use the peer neighbor route to route
> to the connected neighbors. This simplifies IP address allocation as each
> router only needs one address globally.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593 (R&S/SP/Security)
> bmcgahan_at_INE.com
>
> Internetwork Expert, Inc.
> http://www.INE.com
>
> On May 30, 2012, at 8:53 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 Sat Jun 02 2012 - 18:37:19 ART