nanog mailing list archives

Re: I think I jinxed Sprint


From: Chris Woodfield <rekoil () semihuman com>
Date: Mon, 27 Nov 2000 11:30:45 -0500


...and in other news, speaking of Sprint, it appears that AS5511, a 
Sprintlink customer, became a transit provider for the netblock belonging to 
my ISP, CapuNet (an AboveNet customer), and probably many other AboveNet 
blocks, for about 15 minutes this morning...

core1.wdc>sh ip bgp 64.50.178.19
BGP routing table entry for 64.50.160.0/19, version 9657504
Paths: (2 available, best #1, advertised over IBGP)
  1239 5511 6461 7380
    144.228.242.51 from 144.228.242.51
      Origin IGP, metric 55, localpref 50000, valid, external, best
      Community: 6993:1239 65000:10913
  1239 5511 6461 7380, (received-only)
    144.228.242.51 from 144.228.242.51
      Origin IGP, metric 55, localpref 100, valid, external

[cwoodfield@cwoodfield src]$ traceroute 64.50.178.19
traceroute to cd-178-19.ra30.dc.capu.net (64.50.178.19): 1-30 hops, 38 
byte packets
 1  internap-wtcb-gw.e0.wdc.pnap.net (216.52.126.188)  1.05 ms  0.932 ms  
2.76 ms
 2  border2.s3-0.wtc-2.wdc.pnap.net (216.52.127.197)  5.34 ms  3.79 ms  
5.59 ms
 3  core1.fe0-0-fenet1.wdc.pnap.net (216.52.127.1)  5.33 ms  5.52 ms  9.60 
ms
 4  sl-gw2-rly-6-1-0.sprintlink.net (144.232.184.89)  5.14 ms  6.67 ms  
5.66 ms
 5  sl-bb21-rly-3-3.sprintlink.net (144.232.14.45)  8.17 ms  6.74 ms  5.59 
ms
 6  sl-bb20-pen-10-0.sprintlink.net (144.232.9.241)  8.16 ms  9.58 ms  
8.43 ms
 7  sl-bb20-stk-12-0.sprintlink.net (144.232.18.46)  67.9 ms  67.3 ms  
70.9 ms
 8  sl-gw28-stk-8-0.sprintlink.net (144.232.4.110)  67.8 ms  67.4 ms  68.1 
ms
 9  *  *  *
10  *  *  *
11  P6-0.STKBB2.Stockton.opentransit.net (193.251.129.58)  *  *  1242 ms 
(ttl=247!)
12  *  *  *
13  *  *  *
14  *  *  *
15  *  *  *
16

-Chris Woodfield


On Mon, Nov 27, 2000 at 02:44:00AM -0800, Mathew Butler wrote:

I thought that routers were supposed to send ICMP Source-Quench messages
when they got congested?

Or is this something that the proponents of QoS didn't decide on?

-Mat

-----Original Message-----
From: Roeland Meyer [mailto:rmeyer () mhsc com]
Sent: Friday, November 24, 2000 8:58 AM
To: 'Sean Donelan'; nanog () merit edu
Subject: RE: I think I jinxed Sprint

The internet is a lot less forgiving wrt outages then the telco. The telco
can have a circut outage, re-route to another circuit, and the customer
never sees an availability gap. Also, a total outage, during reduced traffic
times, and no customer ever misses a dial-tone because they aren't trying to
get one, is not an outage in telco terms. The internet, on the other hand,
may have similar issues, unless we start talking streaming video, streaming
audio, and voice over IP. In those cases, packet losses can make a serious
mess of things. Also, congestion is treated differently between the two
systems. Telcos will actually return a fast-busy when a switch becomes
congested. The internet simply starts dropping packets. You can actually
hear the latter when using www.dialpad.com or MS-Netmeeting (both of which,
I use extensively).

-- 
---------------------------
Christopher A. Woodfield                rekoil () semihuman com

PGP Public Key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xB887618B



Current thread: