[151750] in North American Network Operators' Group
Re: Comcast Ethernet Feed
daemon@ATHENA.MIT.EDU (Brian R. Watters)
Thu Mar 29 22:03:30 2012
Date: Thu, 29 Mar 2012 19:02:49 -0700 (PDT)
From: "Brian R. Watters" <brwatters@absfoc.com>
To: Randy <randy_94108@yahoo.com>
In-Reply-To: <1333072188.90428.YahooMailClassic@web181114.mail.ne1.yahoo.com>
Cc: NANOG list <nanog@nanog.org>
Reply-To: "Brian R. Watters" <brwatters@absfoc.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
A couple of questions -
1) What flavor of NPE are you using?
NPE-G1
2) Is the GigE interface on the NPE-G1/G2 OR is this a PA?
3) Is the FaE ethernet interface that you appear to be connecting your laptop to, on a separate PA in chassis?
Laptop connected directly to router via slot 4 PA-FE-TX
4) Have you verified you that "bandwidth-points" have not been exceeded for bus-1 and/or 2: slots 1,3,5 for bus1 and 2,4,6; also 0(if I/O controller is present. It is 600 points for bus1 and 600 for bus2.
PCI bus mb1 has 390 bandwidth points
PCI bus mb2 has 500 bandwidth points
Have you *hard-coded* speed and duplex on any of you eth ints? Please don't!
GIGE has been both hard and auto .. same results .. Fast Ether has always been set @ auto
Let both ints auto-negotiate speed&duplex.
Comcast states that we are required to have a hard code FULL DUPLEX and SPEED 100 as well as flow control OFF however I can not appear to be able to disable it :(
after having done so, post the output of:
sh int gi x/y and sh int fa x/y
(hardcoding speed/duplex is sometimes required when dealing with brain-dead CPE. I have also seen other flavors of brain-dead CPE that *only* work when speed/duplex are set to auto)
./Randy
