routing table - all routers IS-IS L1/L2

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Dec 15th, 2008
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There are two areas area 1 and area 2, all have L1/L2 IS-IS running.


How are the routes outside ara 1 going to appear, as i L2 or i *L1 in the routing table of router A and through which interface. Please see picture attached.



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viyuan700 Mon, 12/15/2008 - 17:35
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it will appear as L2 as it is connecetd to other area.


*L1 are used for default gateway. Suppose you have one router E connected to A and one router F to C. As E and F are in different area and are like stub area in OSPF and need a default gateway to reach out to F. When you see the ip route in E & F you will get an entry like *L1.

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