Re: IP unnumbered question

This feature was specially build for environments where two ends may have
ips from different address. And PPP will install one host route /32 for
communication regardless of ip subnet on both ends. In case both sides share
common subnet this route can be removed without any side effect. But in case
both ends are in different subnets then you need to have this route for
communication.

HTH

On Wed, Jan 27, 2010 at 10:01 PM, Muhammad Anser Khan
<manserkhan_at_gmail.com>wrote:

> Please clearify more
>
> IPCP adding a route for 1.1.1.2 : or you can also acheive this by
> adding a static route
>
> *Mar 1 00:28:17.527: Se1/0 IPCP: I CONFREQ [REQsent] id 1 len 10
> *Mar 1 00:28:17.527: Se1/0 IPCP: Address 1.1.1.2 (0x030601010102)
> *Mar 1 00:28:17.531: Se1/0 IPCP: O CONFACK [REQsent] id 1 len 10
> *Mar 1 00:28:17.531: Se1/0 IPCP: Address 1.1.1.2 (0x030601010102)
> *Mar 1 00:28:17.531: Se1/0 CDPCP: I CONFREQ [REQsent] id 1 len
> *Mar 1 00:28:17.535: Se1/0 CDPCP: O CONFACK [REQsent] id 1 len 4
> *Mar 1 00:28:17.543: Se1/0 CDPCP: I CONFACK [ACKsent] id 1 len 4
> *Mar 1 00:28:17.547: Se1/0 CDPCP: State is Open
> *Mar 1 00:28:17.547: Se1/0 IPCP: I CONFACK [ACKsent] id 1 len 10
> *Mar 1 00:28:17.547: Se1/0 IPCP: Address 1.1.1.4 (0x030601010104)
> *Mar 1 00:28:17.547: Se1/0 IPCP: State is Open
> *Mar 1 00:28:17.559: Se1/0 IPCP: Install route to 1.1.1.2
>
> Regards,
> Anser
>
> On Wed, Jan 27, 2010 at 9:11 PM, Satinder Singh <satinder.iitd_at_gmail.com>
> wrote:
> > Hi Jamal
> >
> > PPP encap support the exchange IP addresses (IPCP) so with PPP encap you
> are
> > able to ping. But with HDLC there is no negotiation of IP address so we
> are
> > not aware about the other end address which is in the different subent so
> > not able to ping.
> >
> > Thnaks
> > Satinder
> >
> > On Wed, Jan 27, 2010 at 11:31 PM, Naufal Jamal <naufalccie_at_yahoo.in>
> wrote:
> >
> >> I got a small question over ip unnumberd.
> >> I have two simple routers connected thru s0/0 interfaces
> >> on one router i have configured the interfaces as below
> >> 1)Does ipunnumbered has got to do with the encapsulation of the poin to
> >> point
> >> link.why is it not working with the default enc HDLC? when I give enc
> ppp
> >> on
> >> both the interfaces the ping works fine between the routers else it
> >> doesnt...
> >> Pls clarify...
> >>
> >> R0#sh run int s0/0
> >>
> >> Building configuration...
> >> Current configuration : 76 bytes
> >> !
> >> interface Serial0/0
> >> ip unnumbered Loopback0
> >> serial restart_delay 0
> >> end
> >> R0#sh run int lo0
> >> Building configuration...
> >> Current configuration : 61 bytes
> >> !
> >> interface Loopback0
> >> ip address 1.1.1.4 255.255.255.0
> >> end
> >> ======
> >> R1#sh run int s0/0
> >> Building configuration...
> >> Current configuration : 85 bytes
> >> !
> >> interface Serial0/0
> >> ip address 1.1.1.2 255.255.255.0
> >> serial restart_delay 0
> >> end
> >> ======
> >>
> >>
> >>
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> >
> >
> > --
> > Satinder Singh
> > mobile 09980075998
> >
> >
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Received on Wed Jan 27 2010 - 22:09:20 ART