From: Song Mu (songmu@yahoo.com)
Date: Mon Sep 02 2002 - 17:19:57 GMT-3
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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