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Subject: CCPR 6772 [Fwd: TTS #7207 Update - JLab<->U of Richmond Packet Losses]
The following is a reply to CCPR report from philpott@jlab.org
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Message-ID: <3A9AD07C.54CC7F28@es.net>
Date: Mon, 26 Feb 2001 13:54:04 -0800
From: John Paul Jones <jpj@es.net>
Organization: L.B.N.L./Energy Science Network
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To: Sandy Philpott <Sandy.Philpott@jlab.org>
CC: lawsonj@vt.edu, chiles@vt.edu, "trouble@es.net" <trouble@es.net>,
hector@vt.edu
Subject: TTS #7207 Update - JLab<->U of Richmond Packet Losses
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Hi Sandy,
This looks like ther may be a problem somewhere past our handoff with
Network Virginia. Traceroutes are blocked after that point until the end host
is reached.
___________________________________________________________________________
cebaf-rt1#trace psc1.richmond.edu
Tracing the route to psc1.richmond.edu (141.166.222.211)
1 dchub-jlab.es.net (134.55.208.81) 20 msec 20 msec 20 msec
2 dcconn-dchub.es.net (134.55.208.174) 44 msec 44 msec 40 msec
3 nvirginia-dcconn.es.net (198.124.254.26) 44 msec 48 msec 44 msec
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * psc1.richmond.edu (141.166.222.211) [AS 7066] 80 msec
___________________________________________________________________________
We can get to Network Virginia from our router at JLab with no losses, but when
the pings are run to the first Network Virginia hop & to the psc1.richmond.edu
host simultaneously, the problem is clearly past ESnet.
___________________________________________________________________________
To Network Virginia - First Handoff Point Past ESnet
cebaf-rt1#ping 198.124.254.26
Sending 1000, 100-byte ICMP Echos to 198.124.254.26, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (1000/1000), round-trip min/avg/max = 40/49/376 ms
Simultaneously To Richmond End Host psc1.richmond.edu
cebaf-rt1#ping 141.166.222.211
Sending 1000, 100-byte ICMP Echos to 141.166.222.211, timeout is 2 seconds:
..............................!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!.!!!!!!!!!!!!.!!.!!!!..!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!.!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!..................
.................!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!.!!!!!!!.!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!.................................!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!.!!!!!!!.!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!.!!!!!!!!!!!!
Success rate is 87 percent (879/1000), round-trip min/avg/max = 76/84/256 ms
___________________________________________________________________________
Some of these packet losses look like normal network congestion somewhere in the
path between Network Virginia & the University of Richmond end host. However,
the consistent, long outage times indicate some other problem. I'm cc:'ing the
Network Virginia NOC to see if they can be of further assistance to you.
Network Virginia NOC, is there any condition you might be aware of that would
account for these 70 second outages? Granted, this could also be a problem at
the user end's network but we have no visibility to check further. Your
assistance would be appreciated. Please reply with your findings to
trouble@es.net referencing our ticket TTS #7207. Thanks, John.
ESnet Operations, please update TTS #7207. Thanks, John.
___________________________________________________________________________
John Paul Jones E-Mail: jpj@es.net
Lawrence Berkeley National Laboratory ISU Voice: (208) 282-5196
Energy Sciences Network - ESnet LBNL Cell: (510) 604-7434
Network Technical Service Group Pager: page-jones@es.net
To view an open trouble ticket: finger <ticket-number>@ticket.es.net
ESnet - Connecting people, information and resources. http://www.es.net
___________________________________________________________________________
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