draft-ietf-grow-simple-va-01.txt   draft-ietf-grow-simple-va-02.txt 
Network Working Group P. Francis Network Working Group P. Francis
Internet-Draft MPI-SWS Internet-Draft MPI-SWS
Intended status: Informational X. Xu Intended status: Informational X. Xu
Expires: March 4, 2011 Huawei Expires: September 3, 2011 Huawei
H. Ballani H. Ballani
Cornell U. Cornell U.
R. Raszuk R. Raszuk
Cisco Cisco
L. Zhang L. Zhang
UCLA UCLA
August 31, 2010 March 2, 2011
Simple Virtual Aggregation (S-VA) Simple Virtual Aggregation (S-VA)
draft-ietf-grow-simple-va-01.txt draft-ietf-grow-simple-va-02.txt
Abstract Abstract
The continued growth in the Default Free Routing Table (DFRT) The continued growth in the Default Free Routing Table (DFRT)
stresses the global routing system in a number of ways. One of the stresses the global routing system in a number of ways. One of the
most costly stresses is FIB size: ISPs often must upgrade router most costly stresses is FIB size: ISPs often must upgrade router
hardware simply because the FIB has run out of space, and router hardware simply because the FIB has run out of space, and router
vendors must design routers that have adequate FIB. FIB suppression vendors must design routers that have adequate FIB. FIB suppression
is an approach to relieving stress on the FIB by NOT loading selected 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 RIB entries into the FIB. Simple Virtual Aggregation (S-VA) is a
simple form of Virtual Aggregation (VA) that allows any and all edge simple form of Virtual Aggregation (VA) that allows any and all edge
routers to shrink their FIB requirements substantially and therefore routers to shrink their FIB requirements substantially and therefore
increase their useful lifetime. S-VA does not change FIB increase their useful lifetime. S-VA does not change FIB
requirements for core routers. S-VA is extremely easy to requirements for core routers. S-VA is extremely easy to
configure---considerably more so than the various tricks done today configure---considerably more so than the various tricks done today
to extend the life of edge routers. S-VA can be deployed to extend the life of edge routers. S-VA can be deployed
autonomously by an ISP (cooperation between ISPs is not required), autonomously by an ISP (cooperation between ISPs is not required),
and can co-exist with legacy routers in the ISP. and can co-exist with legacy routers in the ISP. There are no
changes from the 01 version to this version.
Status of this Memo Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at http://datatracker.ietf.org/drafts/current/. Drafts is at http://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on March 4, 2011.
This Internet-Draft will expire on September 3, 2011.
Copyright Notice Copyright Notice
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document authors. All rights reserved. document authors. All rights reserved.
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