[50027] in North American Network Operators' Group
RE: fractional gigabit ethernet links?
daemon@ATHENA.MIT.EDU (Alex Rubenstein)
Tue Jul 16 00:03:52 2002
Date: Tue, 16 Jul 2002 00:03:17 -0400 (Eastern Daylight Time)
From: Alex Rubenstein <alex@nac.net>
To: Phil Rosenthal <pr@isprime.com>
Cc: "nanog@merit.edu" <nanog@merit.edu>
In-Reply-To: <!~!UENERkVCMDkAAQACAAAAAAAAAAAAAAAAABgAAAAAAAAA/zNkI7d3EEmn3+v5DgN/l8KAAAAQAAAAdvgpfmOevke2RJkBguC+ZAEAAAAA@isprime.com>
Errors-To: owner-nanog-outgoing@merit.edu
On Mon, 15 Jul 2002, Phil Rosenthal wrote:
>
> This may sound a bit ridiculous, but say the timer is every 0.25ms.
> 100kbit per 0.25ms = 400,000kbit or 400 mbit.
> It is remotely possible to hit a 300 mbit limit with only 100kbits of
> traffic, if the timer is sufficiently short, and your traffic is
> sufficiently bursty.
A cisco ping is not bursty, to the extent of hundreds of mb/s. Also, cisco
ping doesn't offer 4,000 pings/sec.
> Unless your traffic is Mcast, I doubt that issue is related.
Read on; EIGRP, CDP, etc.
> Can you ask your provider how exactly they are limiting the pipe? When
> dealing with 300 or so megs, I doubt they will be shaping with a policy
> friendly to you, as the logistics of doing so are a bit difficult.
By strapping 1 or more STS-1's to the GE iface.
-- Alex Rubenstein, AR97, K2AHR, alex@nac.net, latency, Al Reuben --
-- Net Access Corporation, 800-NET-ME-36, http://www.nac.net --
