From: Cecil Wilson (Cecil.Wilson@flextronics.com)
Date: Wed Jun 06 2007 - 18:27:27 ART
Hello Group
This changes the topic abit, but are there any downside to using
the same router ID's for both OSPF and BGP?
Eg
router bgp 100
router-id 1.1.1.1
And
Router ospf 1
Router-id 1.1.1.1
Thanks, in advance
Cecil G. Wilson
IT Network Services
Office: (901) 215-2710
Cell: (901) 601-6201
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Sadiq Yakasai
Sent: Wednesday, June 06, 2007 1:43 PM
To: ccielab
Subject: OSPF router-id not from loopback
Guys,
So I am configurring OSPF but I have not been in the habit of putting my
router-id as my loopback interface. I am running into abit of a
confusion here:
For e.g:
R1: router-id 1.1.1.1
R2: router-id 2.2.2.2
...... and so on....
SW2(config)#do sh ip ospf datab
OSPF Router with ID (8.8.8.8) (Process ID 1)
Router Link States (Area 1)
Link ID ADV Router Age Seq# Checksum Link
count
5.5.5.5 5.5.5.5 275 0x80000029 0x00BD69 1
8.8.8.8 8.8.8.8 358 0x8000002C 0x001F32 2
Summary ASB Link States (Area 1)
Link ID ADV Router Age Seq# Checksum
6.6.6.6 5.5.5.5 89 0x80000001 0x006667
So why I am seeing 5.5.5.5, 8.8.8.8, 6.6.6.6 as link IDs? I would have
thot that shud actually be the network ID (routes) and the ADV Router
shud have the router-id of the advertizing router.
What are the caveats of using router-id naming conventions of this sort
please? It is safest to just use the loopback addresses as opposed to
using an arbitrary value?
Thanks
Sadiq
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