From: Ajaz Nawaz (anawaz@xxxxxxxxx)
Date: Mon Dec 03 2001 - 15:39:13 GMT-3
what do you mean by stability in your question. Does it have anything to do
with loopback interfaces never going down or are you perhaps referring to
the ospf process itself ?
jaz
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jaeheon Yoo
Sent: 03 December 2001 16:17
To: ccielab; SFeldberg@edeltacom.com
Subject: Re: Router-ID
Hi, Rajeev.
When you use "router-id" command, I believe you don't have to reference an
IP address that is in use on a physical or logical interface. It doesn't
matter what 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
Protocol
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
down
Serial1 131.104.12.2 YES NVRAM down
down
r2#sh vers
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-JOS56I-L), Version 12.1(3)T, RELEASE SOFTWARE
(fc1)
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.
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:32:36 GMT-3