Performance of Virtual Aggregation
draft-ietf-grow-va-perf-00
| Document | Type | Expired Internet-Draft (grow WG) | |
|---|---|---|---|
| Authors | Hitesh Ballani , Paul Francis , Dan Jen , Xiaohu Xu , Lixia Zhang | ||
| Last updated | 2009-07-05 | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | (None) | ||
| Formats |
Expired & archived
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| Stream | WG state | WG Document | |
| Document shepherd | (None) | ||
| IESG | IESG state | Expired | |
| Consensus boilerplate | Unknown | ||
| Telechat date | (None) | ||
| Responsible AD | (None) | ||
| Send notices to | (None) |
https://www.ietf.org/archive/id/draft-ietf-grow-va-perf-00.txt
Abstract
The document "FIB Suppression with Virtual Aggregation" [I-D.francis-intra-va] describes how router FIB size may be reduced. This approach entails a trade-off between path-length and load versus FIB size. It also has the potential to reduce convergence time. This document describes the results of several studies that examine these characteristics. The results of a study for a Tier-1 ISP with a relatively sophisticated deployment of VA, shows that FIB size could be reduced ten times or more with a worst-case latency penalty of 4ms and a worst-case load increase of <1.5%. Another study, examining a much simpler style of VA deployment, also for a Tier-1 ISP, shows that FIB size can be reduced by four times (in routers serving as APRs), and more than 10 times in other routers. Here, worst-case latency increase was 16 ms, though this is almost certainly an over-estimate, both because traceroute was used to make the measurement, and because popular prefixes were not considered.
Authors
Hitesh Ballani
Paul Francis
Dan Jen
Xiaohu Xu
Lixia Zhang
(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)