RE: same subnet IPs used on 2 different interfaces

From: Chris Lewis \(chrlewis\) (chrlewis@cisco.com)
Date: Mon Jun 27 2005 - 19:37:33 GMT-3


Have you looked at the routing table and seen what effect the OSPF
network type has on that?

Chris

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Pat Chui
Sent: Monday, June 27, 2005 12:48 PM
To: Group Study
Subject: same subnet IPs used on 2 different interfaces

Guys,
I had this scenario in which I have to get 2 FR p-t-p sub-interfaces to
use IPs on the same subnet in one router, and it's pingable between the
2 sub-interfaces. I was wondering if any sort of bridging mechanism
enabled auto-magically or else? Maybe you can help me to understand
this.

Thanks,
Pat

======
interface Serial1/0.1 point-to-point
  ip address 172.16.124.1 255.255.255.0
  ip ospf network point-to-multipoint
  frame-relay interface-dlci 104
!
interface Serial1/0.2 point-to-point
  ip address 172.16.124.2 255.255.255.0
  ip ospf network point-to-multipoint
  frame-relay interface-dlci 102
!

======
R1#ping ip
Target IP address: 172.16.124.1
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface: 172.16.124.2 Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.124.1, timeout is 2 seconds:
Packet sent with a source address of 172.16.124.2 !!!!!
======



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