From: Jaeheon Yoo (kghost@xxxxxxxxxxxx)
Date: Mon Dec 03 2001 - 13:17:04 GMT-3
Hi, Rajeev.
When you use "router-id" command, I believe you don't have to reference an IP a
ddress that is in use on a physical or logical interface. It doesn't matter wha
t IP address you use, at least syntactically.
Hope this helps.
Jaeheon Yoo
r2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
r2(config)#router ospf 1
r2(config-router)#router-id 1.1.1.1
r2(config-router)#^Z
r2#sh
00:02:14: %SYS-5-CONFIG_I: Configured from console by console
r2#sh ip ospf data router
OSPF Router with ID (1.1.1.1) (Process ID 1)
Router Link States (Area 0)
LS age: 6
Options: (No TOS-capability, DC)
LS Type: Router Links
Link State ID: 1.1.1.1
Advertising Router: 1.1.1.1
LS Seq Number: 80000001
Checksum: 0xB089
Length: 36
Number of Links: 1
Link connected to: a Stub Network
(Link ID) Network/subnet number: 131.104.2.2
(Link Data) Network Mask: 255.255.255.255
Number of TOS metrics: 0
TOS 0 Metrics: 1
r2#sh ip int brief
Interface IP-Address OK? Method Status Pro
tocol
Ethernet0 192.168.0.11 YES NVRAM up up
Loopback0 131.104.2.2 YES NVRAM up up
Serial0 131.104.23.2 YES NVRAM down dow
n
Serial1 131.104.12.2 YES NVRAM down dow
n
r2#sh vers
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-JOS56I-L), Version 12.1(3)T, RELEASE SOFTWARE (f
c1)
Copyright (c) 1986-2000 by cisco Systems, Inc.
----- Original Message -----
From: <SFeldberg@edeltacom.com>
To: "Rajeev Siddappa" <raj_lab@yahoo.com>
Cc: <ccielab@groupstudy.com>
Sent: Monday, December 03, 2001 11:57 PM
Subject: Re: Router-ID
>
> My understanding of the application of this command is to "lock down" a
> known ID for an OSPF process. It will add stability through reliably by
> assigning the same ID to your OSPF router after a reload. You will still
> need to reference an IP address that is in use on a physical or logical
> interface- logical being more than physical. This configuration step
> becomes more critical with the use of multiple OSPF processes with
> virtual-links involved. This is the only way that you can insure that each
> OSPF process is assigned the same ID every time.
>
> Steve
>
>
>
> Rajeev
> Siddappa To: Frank B <frank@buff-net.com>
, ccielab@groupstudy.com
> <raj_lab@yahoo cc:
> .com> Subject: Router-ID
> Sent by:
> nobody@groupst
> udy.com
>
>
> 12/01/2001
> 11:37 PM
> Please respond
> to Rajeev
> Siddappa
>
>
>
>
>
>
> If I use the command,
>
> Router-ID under OSPF what will be the stability f the
> OSPF process. Will it be similr to an loop back
> interface ip address or Physical.
>
> Thank you,
> Rajeev.
>
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