From: Jason Sinclair (sinclairj@powertel.com.au)
Date: Thu Feb 13 2003 - 02:37:48 GMT-3
Jason,
OSPF does not heave level 1/2 routes, but ISIS does. This basically means
when you import the OSPF route into ISIS make it a L1 or L2 ISIS route. Tags
can be used to match and modify routes, pass BGP attributes, etc via
route-maps. If you would like further explanation of this please let me
know, however I strongly recommend reviewing Doyles texts with regards to
this.
Regards,
Jason Sinclair CCIE #9100
Manager, Network Control Centre
POWERTEL
55 Clarence Street,
SYDNEY NSW 2000
AUSTRALIA
office: + 61 2 8264 3820
mobile: + 61 416 105 858
email: sinclairj@powertel.com.au
-----Original Message-----
From: Jason Cash [mailto:cash2001@swbell.net]
Sent: Monday, 2 December 2002 15:17
To: ccielab@groupstudy.com
Subject: OSPF / ISIS Redist.
Ok what does the following mean:
router isis
redistribute ospf 1 metric 32 metric-type internal level-1-2
I take it to mean:
Redistribute OSPF Process 1 into ISIS with a metric of 32.
Make those routes ISIS internal
But what does that level-1-2 mean? OSPF does not have level-1-2 routes.
Also, under the OSPF process the solution is listed as:
router ospf 1
redistribute isis level-1-2 metric 100 metric-type 1 subnets tag 1024
I take this to mean:
Redistribute ISIS process (both level 1,2 routes)
Make them External Type1, classless
Now what is the tag for? I know that when I do a 'sh ip ospf data' it
marks these routes with that tag, but what significance does the tag
play with any route process?
It seems that redistribution is a weak point of mine, so I am trying to
get this down!
.
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