[14929] in North American Network Operators' Group
RE: backbone routers' priority settings for ICMP & UDP
daemon@ATHENA.MIT.EDU (Mark Kayser)
Tue Feb 3 17:55:43 1998
From: "Mark Kayser" <mkayser@mci.net>
To: <owner-nanog@merit.edu>, "Marko B." <mrako@notwork.net>, <nanog@merit.edu>
Cc: <marko@notwork.net>
Date: Tue, 3 Feb 1998 15:05:13 -0500
In-reply-to: <199802031917.OAA07317@foo.notwork.net>
This is not typically a policy that is carried out by the providers. It is
just how some router vendors have developed their implementations. They
don't give a lower priority to UDP or ICMP unless that traffic is destine
for the router itself. Although some providers do chose to block
traceroutes, but that's a different story.
--Mark Kayser
MCI Network Operations
> -----Original Message-----
> From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu]On Behalf Of
> Marko B.
> Sent: Tuesday, February 03, 1998 2:17 PM
> To: nanog@merit.edu
> Cc: marko@notwork.net
> Subject: backbone routers' priority settings for ICMP & UDP
>
>
> Greetings,
>
> In my travels I have heard numerous times that it is a popular practice to
> give ICMP and even UDP traffic a lower priority on backbone routers in
> times of congestion.
>
> Are there any providers that document this policy? How is this policy
> carried out on the actual hardware? Any pointers would be appreciated.
>
> Thanks.
>
> -Marko
>
