From: Mike Kraus \(mikraus\) (mikraus@cisco.com)
Date: Sat Jun 30 2007 - 09:48:45 ART
Remember with OSPF, you can also specify what routes you want to
redistribute only internal, external 1 2, nssa. So, this can also be
used to limit routing loops in some circumstances (by only
redistributing internal routes).
I would never try to figure out the "one way" to get things done, cause
sure enough your exam will say you can't use that method. ;) Be
comfortable with all the methods!
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
louis john
Sent: Saturday, June 30, 2007 1:36 AM
To: Cisco certification
Subject: When Do I need to do two ways/ One way filtering with mutual
redistribution ?
Folks,
Please correct me if I am wrong.
Between OSPF & EIGRP
If I have mutual redistribution between OSPF & EIGRP then one way
filtering will be enough, the filtering should be done from the OSPF
side like tag the packets entering the OSPF domain and filter it on the
other router.
This is because EIGRP should not have any problem in it's domain since
routes are classified with AD of 90 and 170.
Between RIP & EIGRP
the same case can be applied for OSPF & EIGRP i.e. one way filtering
into the RIP domain.
Between OSPF & RIP
Here I should do two ways filtering since both protocols are not
classifying who is internal and who is external.
Appreciating your confirmation.
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