From: V.Shekhar@GlobalAssurance.Net
Date: Tue May 13 2008 - 07:43:32 ART
Just wanted to Correct " 3. stub, nssa, and totally nssa get a default
type 3 automatically "
while u have an injected default route in other cases mentioned above,
making an area NSSA alone will NOT inject a default route of T3, U need
to make it "NSSA totally stubby "or specify the option "default-route
originate" explicitly.
-- -V Shekhar CCIE(sec)#17589/CISSP/RHCE.Joseph Brunner wrote: > 1. no redistribution into a stub area (must use NSSA) > 2. no default route automatically in a NSSA (only NSSA totally)... look for > wording of the question... > 3. stub, nssa, and totally nssa get a default type 3 automatically (check > show ip ospf database) last I recall the default the ABR sends is a type 3. > 3. NSSA has the 7-to-5 translator election... > > Its all about wording IMHO... just remember there is no TYPE 5 LSA in a > STUB... so if you redistribute anything in, the NSSA's have type 7 to do > this. > > > -Joe > > -----Original Message----- > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of > Uyota Oyearone > Sent: Tuesday, May 13, 2008 1:19 AM > To: Cisco certification > Subject: ospf stub & NSSA > > Hi guys, > > > > I am not 100% comfortable distinguishing btw. when to use nssa or stub > > > > Assuming R1 connection to the rest of the ospf domain is through R3. Since > R1 does not need specific routing information to the rest of the network, it > just needs to receive only a default route. > > > > *** > > These two solutions seems to be doing the same thing for me > > *** > > *Solution 1* > > > > R3# > > router ospf 1 > > area 5 nssa no-summary > > > > R1# > > area 5 nssa. > > > > > > *Sol.2* > > > > R3# > > area 5 stub no-summary > > > > R1# > > area 5 stub > > > > *** > > My question is when can you categorically use nssa over stub, or vice-versa? > > > > Thanks > > > > Uyota > > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html > > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
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