IS-IS L1 - L2

From: steve.skinner@uk.pwc.com
Date: Mon Aug 02 2004 - 08:19:42 GMT-3


Good day to all CCIE`s ...future CCIE`s CCIE lab proctor`s and CCIE
bootcamp Proctor`s

i have a quiery regarding

IS -IS

R1 (l1/l2) ------R2 (L1/L2)-----R3 L1

R1 and R2/3 are in the same area

this is about routes seen from R3

if on R1 i do two things

redistribute ip static type-L1 ( i think )

this put`smy connected interfaces ( lo10) into L1 only ( i.,e loopback
150.150.1.1)
and
i advertisre a summary addres of 150.150.1.0 ( same class) into L2 only

i now have two routes for 150.150.1.1..
1 coming from an L1 update ...and 1 from an L2 update

if both these routes were both identical ( which bieng a summary that would
not usually be the case )

then R3 should recieve two route`s
1 from the L1 update and 1 from the L2 update .

which 1 would go into the main ip routing table ???

iam not doing route leaking or anything else

any clue`s ...

Many thanks

Stephen Skinner
Senior Network Support Analyst
UK IT
Price WaterHouse Coopers
Tel +44 207 2134182



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