nanog mailing list archives
Re: backbone routers' priority settings for ICMP & UDP
From: Scott Whyte <swhyte () cisco com>
Date: Tue, 3 Feb 1998 14:55:13 -0800 (Pacific Standard Time)
Marc, I'd have to agree, ICMP is more for flow control than congestion control. A source quench is to slow a fast machine from overrunning a slow machine, not preventing all flows from going through one link. One then wonders how well Win95 implements source quench, if at all. One (weak) metaphor is that traffic lights at an intersection are for flow control, while the traffic lights to get onto the freeway (common here in California) are for congestion control... On Tue, 3 Feb 1998, Marc Slemko wrote:
Sure, hosts can generate them, but that is seldom of much utility (especially in the discussion here about network congestion control as opposed to host/processing congestion control) because the network is more often the backlog than the host, and the host can't generate messages saying the network is congested. ICMP messages are not a commonly used or particularily useful method of congestion control on the Internet today.
------------------------------------------------------------------- Scott Whyte 408.527.5713 |Any opinions expressed herein are Network Supported Accounts (NSA) |mine and not cisco's... CCIE 3340 | | "Eschew Obfuscation"
Current thread:
- backbone routers' priority settings for ICMP & UDP Marko B. (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Dean Anderson (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Marc Slemko (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Dean Anderson (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Marc Slemko (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Scott Whyte (Feb 04)
- Re: backbone routers' priority settings for ICMP & UDP Dave Siegel (Feb 04)
- Re: backbone routers' priority settings for ICMP & UDP Alex Bligh (Feb 04)
- Re: backbone routers' priority settings for ICMP & UDP Dave Siegel (Feb 04)
- Re: backbone routers' priority settings for ICMP & UDP Scott Whyte (Feb 04)
- Re: backbone routers' priority settings for ICMP & UDP Dave Siegel (Feb 04)
- Re: backbone routers' priority settings for ICMP & UDP Marc Slemko (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Dean Anderson (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP John Hawkinson (Feb 04)
- <Possible follow-ups>
- RE: backbone routers' priority settings for ICMP & UDP Dave Van Allen (Feb 03)
- Re: backbone routers' priority settings for ICMP & UDP Vern Paxson (Feb 04)