From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Mon Oct 04 2004 - 14:10:58 GMT-3
Mani,
Since in the real lab you may interact with backbone routers
that are shared with other candidates, select a router ID that is
unique. 1.1.1.1, 2.2.2.2 and 3.3.3.3 may not be unique. In your home
lab they may be unique but in the real lab, the possibly exists that you
area sharing backbone routers and could possibly end up using the same
router ID as someone else. To help guard against this possibility, pick
an existing loopback address to hard code as your OSPF, EIGRP and/or BGP
router ID or pick X.X.Y.Y where X is your rack number and Y is the
device number (1=R1, 2=R2, etc).
Plus hard coding the loopback address as the router ID is good
habit to be in for real world implementations.
Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
bdennis@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 775-745-6404 (Outside the US and Canada)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
mani poopal
Sent: Monday, October 04, 2004 9:48 AM
To: OzgurG@garanti.com.tr; swm@emanon.com; ccielab@groupstudy.com
Subject: RE: ospf router-id
Hi
Thanks all for your responses. After Scott's email I might hard code
router# (eg:for R4 router id=4.4.4.4) as router-id for eigrp and ospf.
Hi I know that we can't use 0.0.0.0(joke). Guys this forum is very good,
so read and enjoy.
Mani
OzgurG@garanti.com.tr wrote:
Except that you can not configure it 0.0.0.0 on Cisco routers.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Scott Morris
Sent: 04 October 2004 17:14
To: 'mani poopal'; ccielab@groupstudy.com
Subject: RE: ospf router-id
The router id is simply a 32-bit number. You may set it to anything
your heart desires!
As long as your lab doesn't require the router-id to be something in
particular, or there is an instruction telling you not to manually set
the router-I or anything like that, then you're cool to go!
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713,
CISSP, JNCIP, et al.
IPExpert CCIE Program Manager
IPExpert Sr. Technical Instructor
swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
mani poopal
Sent: Monday, October 04, 2004 2:33 AM
To: ccielab@groupstudy.com
Subject: ospf router-id
Hi Group,
Is it ok to hard code router id of a ospf router(router-id 3.3.3.3 to
other than a non given address(assume 3.3.3.3 for R3)ie:Do we have to
hard code the loopback ip address. If it is loopback addresss we are
going to advertise it in to ospf and if it is non given ip address we
are not going to advertise in to ospf. I know you can give a non given
ip address as a router id and not to advertise it in to ospf, but is
this ok for the lab exam.
thanks
Mani
B.ENG,A+,CCNA,CCNP,CCNP-VOICE, CSS1,CNA,MCSE
(416)431 9929
MANI_CCIE@YAHOO.COM
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