From: Song Mu (songmu@yahoo.com)
Date: Mon Sep 02 2002 - 17:35:42 GMT-3
Sorry, Guy:
I did not pay attention to that you configured on different router.
That should be one of the solutions then. I agreee.
Song
--- "Lupi, Guy" <Guy.Lupi@eurekaggn.com> wrote:
> Well, the requirement states that you cannot advertise the route
> through a
> protocol or use statics, so you couldn't use redistribution even
> though that
> would work. If you notice, in my example the secondary address is on
> the
> router that doesn't have the loopback address, so there aren't 2 IP
> addresses from the same network on 2 different interfaces on the same
> router, there are 2 IP addresses from the same network on 2 different
> routers. My solution is only one of a few possible ways to do this.
>
> -----Original Message-----
> From: Song Mu [mailto:songmu@yahoo.com]
> Sent: Monday, September 02, 2002 4:20 PM
> To: Lupi, Guy; 'Casey, Paul (6822)'; 'ccielab@groupstudy.com'
> Subject: RE: Help needed
>
>
> Guy,
>
> I am not sure how can you assign IP addresses from the same network
> to
> different interfaces on the same router.
>
> The best way for this could be using reidstribute connected in the
> OSPF
> process.
>
> Song
> --- "Lupi, Guy" <Guy.Lupi@eurekaggn.com> wrote:
> > On the router that needs to ping the other router's loopback
> address,
> > put a
> > secondary IP address on the serial interface in the same network as
> > the
> > other router's loopback address. It will forward ICMP on the
> serial
> > interface for any IP address within that network other than its
> own,
> > with a
> > source address of the primary interface. Example below:
> >
> > 2511# sh run
> >
> > interface Loopback0
> > ip address 192.168.147.1 255.255.255.0
> > !
> > interface Serial0
> > ip address 10.10.222.1 255.255.255.252
> > no fair-queue
> > !
> > router ospf 100
> > log-adjacency-changes
> > passive-interface default
> > no passive-interface Serial0
> > network 10.10.222.0 0.0.0.3 area 0
> > !
> > access-list 188 permit icmp any any
> >
> > 2511#sh ip os neigh
> >
> > Neighbor ID Pri State Dead Time Address
> > Interface
> > 10.10.222.2 1 FULL/ - 00:00:39 10.10.222.2
> > Serial0
> > 2511#
> >
> > Router#
> > interface Serial1
> > ip address 192.168.147.2 255.255.255.0 secondary
> > ip address 10.10.222.2 255.255.255.252
> > clockrate 1300000
> > !
> > router ospf 100
> > log-adjacency-changes
> > passive-interface default
> > no passive-interface Serial1
> > network 10.10.222.0 0.0.0.3 area 0
> >
> > Router#sh ip os neigh
> >
> > Neighbor ID Pri State Dead Time Address
> > Interface
> > 192.168.147.1 1 FULL/ - 00:00:38 10.10.222.1
> > Serial1
> > Router#ping 192.168.147.1
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 192.168.147.1, timeout is 2
> > seconds:
> > !!!!!
> > Success rate is 100 percent (5/5), round-trip min/avg/max =
> 20/24/28
> > ms
> > Router#
> >
> > 2511#debug ip packet detail 188
> >
> > 2w4d: IP: s=10.10.222.2 (Serial0), d=192.168.147.1, len 100, rcvd 4
> > 2w4d: ICMP type=8, code=0
> > 2w4d: IP: s=192.168.147.1 (local), d=10.10.222.2 (Serial0), len
> 100,
> > sending
> > 2w4d: ICMP type=0, code=0
> > 2w4d: IP: s=10.10.222.2 (Serial0), d=192.168.147.1, len 100, rcvd 4
> > 2w4d: ICMP type=8, code=0
> > 2w4d: IP: s=192.168.147.1 (local), d=10.10.222.2 (Serial0), len
> 100,
> > sending
> > 2w4d: ICMP type=0, code=0
> > 2w4d: IP: s=10.10.222.2 (Serial0), d=192.168.147.1, len 100, rcvd 4
> > 2w4d: ICMP type=8, code=0
> > 2w4d: IP: s=192.168.147.1 (local), d=10.10.222.2 (Serial0), len
> 100,
> > sending
> > 2w4d: ICMP type=0, code=0
> > 2w4d: IP: s=10.10.222.2 (Serial0), d=192.168.147.1, len 100, rcvd 4
> > 2w4d: ICMP type=8, code=0
> > 2w4d: IP: s=192.168.147.1 (local), d=10.10.222.2 (Serial0), len
> 100,
> > sending
> > 2w4d: ICMP type=0, code=0
> > 2w4d: IP: s=10.10.222.2 (Serial0), d=192.168.147.1, len 100, rcvd 4
> > 2w4d: ICMP type=8, code=0
> > 2w4d: IP: s=192.168.147.1 (local), d=10.10.222.2 (Serial0), len
> 100,
> > sending
> > 2w4d: ICMP type=0, code=0
> > 2511#
> >
> >
> > -----Original Message-----
> > From: Casey, Paul (6822) [mailto:Paul.Casey@o2.com]
> > Sent: Monday, September 02, 2002 3:10 PM
> > To: 'ccielab@groupstudy.com'
> > Subject: Help needed
> >
> >
> > This is a lab i am working on.
> >
> > 2 routers back to back. Running ospf between then on there serial
> > interfaces
> > only. 1 of the routers has a loopback address, which is not running
> > ospf.
> >
> > The object is to be able to ping this loopback address from the
> other
> > router... No static, default routes..allowed. The question also
> > states that
> > NO routing protocol may advertise this loopback address in any
> way...
> >
> >
> > Anyone got any idea's how to achieve this..??? I was thinking about
> > some
> > kind of tunneling..!!
> >
> > If it is tunneling, could someone provide an example of this
> >
> > Any help appreciated
> > Kind regards
> > Paul.
> > --------------------------
> > Sent from my BlackBerry Wireless Handheld
> >
> >
> >
>
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