From: Timothy Chin (Tim@1c-solutions.com)
Date: Fri Dec 26 2008 - 05:49:36 ARST
You are correct. The redistributed routes would have an administrative
distance of 170 so it doesn't make sense. I wouldn't believe anything
Testking has to say. Throw anything from Testking away and go with
something like Narbik's workbooks or IE. As far as tagging the routes
you can match them using a prefix list and route map on R2 or R3 and
then tag them and then create a route map on R4 to match the tagged
routes.
Tim
________________________________
From: Xiaobo Zhu [mailto:xiaobo@zhu.net]
Sent: Friday, December 26, 2008 2:39 AM
To: Timothy Chin
Cc: Cisco certification
Subject: Re: Redistribute issue
Hi,
thanks for you reply.
Sorry but there are no extra information about bandwidth or delay.
Anyway, the explanation from Testking is R4 will choose to install the
route with the lowest administrative distance into the routing table. so
they believe the way through R3 is more preferred.
What I am confusing about is that is there any mechanism on tagging the
source routing protocol of the external routes? I used to think that in
the R4's view, the route of 1.1.1.0/24 comes from both R2 and R3 is 170.
The explanation doesn't seem to make sense.
Further suggestions are welcomed.
Regards.
Xiaobo
On Fri, Dec 26, 2008 at 3:17 PM, Timothy Chin <Tim@1c-solutions.com>
wrote:
This would depend on R4's connection speed to Routers R3 and R4 because
of the delay factor.
Tim
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Xiaobo Zhu
Sent: Friday, December 26, 2008 2:05 AM
To: Cisco certification
Subject: Redistribute issue
Hi,
take this scenario
R1---RIP-----R2
| |
OSPF EiGRP 1
| |
R3---EIGRP 1--R4
R1 has an loopback 0 with ip address 1.1.1.0/24, which is advertise to
R2
via RIP and advertised to R3 via OSPF.
As the digram shows, R2, R3 and R4 are in the same EIGRP domain.
The question is if R2 redistribute and R3 both redistribute 1.1.1.0 to
R4
with the same K value, which path will R4 take to reach the
1.1.1.0/24network.
Many thanks!
Blogs and organic groups at http://www.ccie.net
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