From: Ajay Prakash (ajay.prakash@networkpeople.co.in)
Date: Wed Aug 15 2007 - 01:42:01 ART
When you redistribute from a lower to a higher AD routing protocol there
should be no issues. However, when you redistribute from a higher AD
protocol to a lower AD protocol, there can be issues of route feedback.
In your question you are concerned about redistribution between RIP and
OSPF. RIP has an AD of 120 while OSPF has an AD of 110. When OSPF routes are
re-distributed in RIP, their AD now becomes 120 in the RIP domain and there
are no chances of route feedback into the OSPF domain.
While re-distributing from RIP to OSPF (Higher to lower) and if you have
more than one re-distribution routers between them then there are chances of
RIP routes being fed back to them as the AD of these routes is now 110 as
against their AD of 120 in RIP domain.
How you tackle this problem depends on scenario and your network design.
Also take a look at the link below:
http://www.cisco.com/univercd/cc/td/doc/cisintwk/ics/cs001.htm
HTH
Ajay
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
NITIN NITIN
Sent: Wednesday, August 15, 2007 7:34 AM
To: ccielab@groupstudy.com
Subject: Fwd: Redistribution between RIP and OSPF ....
Hi ,
even ME 2 haave this doubt ..... Please clarify experts ..
Thanks and regard
Note: forwarded message attached.
Hi GS,
I am confused about redistribution between rip and ospf .... *1)* My
question is that when we redistribute between RIP and OSPF, do we need to
lower the AD to 109 so that ospf routes can be redistributed into rip or
*Case
2* would work ? *2)* Under which scneario should we use the 'distance 109'
command under the router rip mode ?
*Case 1*:
--------------------------------------------------------
router rip
distance 109
redistribute ospf 1 metric 1
!
!
router ospf 1
redistribute rip subnets
!
--------------------------------------------------------
*Case 2*:
--------------------------------------------------------
router rip
redistribute ospf 1 metric 1
!
router ospf 1
redistribute rip subnets
!
--------------------------------------------------------
Thank you,
Cheers,
ccie1101.
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