Hi Gang, Regarding this draft...there is no new technology in this draft. Rather, we decided to put a standalone description of a simple variant of VA in one draft. This is the variant whereby core routers maintain the whole FIB, and edge routers do FIB suppression and default route to core routers. In effect, there is a single virtual prefix, 0/0. This simplifies all aspects of operation, and is useful for FIB shrinking at edge routers, which is typically where ISPs are putting their older routers.
As for the complete version of VA (i.e. with multiple virtual prefixes), we think the drafts are pretty stable, so we plan to fold all of the tunneling drafts back into the main draft...in other words there will be a single draft rather than the current four. After that most remaining changes to the draft will come from implementation experience. PF From: [email protected] To: [email protected] Cc: [email protected] Date: 03/01/2010 10:01 PM Subject: [GROW] I-D Action:draft-ietf-grow-simple-va-00.txt Sent by: [email protected] A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Global Routing Operations Working Group of the IETF. Title : Simple Virtual Aggregation (S-VA) Author(s) : P. Francis, et al. Filename : draft-ietf-grow-simple-va-00.txt Pages : 11 Date : 2010-03-01 The continued growth in the Default Free Routing Table (DFRT) stresses the global routing system in a number of ways. One of the most costly stresses is FIB size: ISPs often must upgrade router hardware simply because the FIB has run out of space, and router vendors must design routers that have adequate FIB. FIB suppression is an approach to relieving stress on the FIB by NOT loading selected RIB entries into the FIB. Simple Virtual Aggregation (S-VA) is a simple form of Virtual Aggregation (VA) that allows any and all edge routers to shrink their FIB requirements substantially and therefore increase their useful lifetime. S-VA does not change FIB requirements for core routers. S-VA is extremely easy to configure---considerably more so than the various tricks done today to extend the life of edge routers. S-VA can be deployed autonomously by an ISP (cooperation between ISPs is not required), and can co-exist with legacy routers in the ISP. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-grow-simple-va-00.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft. ftp://[email protected]/internet-drafts/draft-ietf-grow-simple-va-00.txt _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow [attachment "draft-ietf-grow-simple-va-00.txt" deleted by Paul Francis/INS/MPII/DE] _______________________________________________ GROW mailing list [email protected] https://www.ietf.org/mailman/listinfo/grow
