nanog mailing list archives
Re: Cisco RFC1997 implementation clarification.
From: Marko Karppinen <marko.karppinen () magentasites com>
Date: Tue, 10 Jul 2001 12:02:36 +0300
While researching an RFC1997 issue this morning, I made the following observations:
CISCO no-export = RFC1997 NO_EXPORT_SUBCONFED CISCO local-as = RFC1997 NO_EXPORT
Cisco Press' Routing TCP/IP, Vol 2 explicitly states that LOCAL_AS == NO_EXPORT_SUBCONFED. It's description of LOCAL_AS differs, however, from the one you quoted from a Cisco web page: "LOCAL_AS (4294967043, or 0xFFFFFF03) -- RFC 1997 calls this attribute NO_EXPORT_SUBCONFED. Routes received carrying this value cannot be advertised to EBGP peers, including peers in other autonomous systems within a confederation." My money is on the Cisco web page you quoted being wrong. Marko --
Magenta Sites
Marko Karppinen
Current thread:
- Cisco RFC1997 implementation clarification. John Fraizer (Jul 09)
- Re: Cisco RFC1997 implementation clarification. Marko Karppinen (Jul 10)