discard route, summary of externals and external types

"Kostiner, Assaf (Assaf)" <akostine@AVAYA.COM> Wed, 30 October 2002 08:13 UTC

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Thread-Topic: discard route, summary of externals and external types
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Date: Wed, 30 Oct 2002 10:15:18 +0200
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From: "Kostiner, Assaf (Assaf)" <akostine@AVAYA.COM>
Subject: discard route, summary of externals and external types
To: OSPF@DISCUSS.MICROSOFT.COM
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Hi,
I wonder if anyone knows:
1. Is the command 'summary-address ip-address mask' for summarization of externals a Cisco proprietary, or do other vendors implement it as well? 
2. Cisco has a command: : [no]discard-route internal / [no] discard-route external - why would anyone want to prevent a discard route from forming?
3. Until now, i have always worked with externals type 2. Is there any good reason to move to type 1? Any special cases?
4. And last... Does anyone knows what opaque LSA is? The RFC which talks about it, doesn't bring detailed examples of using it, only explains the ospf changes.

Thanks for any help, Assaf.