RE: request time out with one site


Subject: RE: request time out with one site
From: Buddha (buddha@gci.net)
Date: Wed Jan 23 2002 - 04:55:05 AKST


Old topic, new idea. Stolen from
http://www.linuxdoc.org/HOWTO/DSL-HOWTO/tuning.html

5.4.1
Some Web pages won't load. For PPPoX users, the MTU value could be too high.
This will cause packet fragmentation, and likely will cause misbehaving
routers to fail to route your requests per Path MTU Discovery specs.The
correct ppp0 device setting should be a maximum of 1492, but actually it
needs to be 8 bytes less than any router you pass through on the way to the
site. If a router somewhere is misconfigured, you could have problems. Try
experimenting with lower MTU values. Any LAN hosts behind the connection,
may even need to be even lower -- 1452 or maybe even 1412. If ECN is
enabled, it might also cause this problem. Cured with "echo 0 > cat
/proc/sys/net/ipv4/tcp_ecn".

Could a router somewhere be "blocking" your http requests?

-Jim "Buddha" McMorris

-----Original Message-----
From: aklug-bounce@aklug.org [mailto:aklug-bounce@aklug.org]On Behalf Of
W.D.McKinney
Sent: Wednesday, December 26, 2001 2:23 PM
To: aklug@aklug.org
Subject: Re: request time out with one site

Greg Hagele <ghagele@alaska.net> wrote:
> tatus: RO
>
>
> I have been attempting to get into my banking site. when i try going to
the
> secure page, from the main page, http://www.wellsfargo.com (click on the
Online
> Banking top right corner) the page will not load. It just says
"contacted
> host waiting for reply" and never loads. I called the guys down in the
lower
> 48 and they said the direct page was banking.wellsfargo.com
> I attempted that but no joy, they said they had no problems getting in to
the
> page there. I can get to other secure sites and surf without delay. Any
ideas
> on why this page may be not letting me in. I have tried a couple of
different
> computers and web browser Explore and Netscape with the same result.
>
> tha

My ACS DSL has noissues with any of the URL's mention in this thread.
From a NAP point traceroute to "www.bp.com" --> 208.254.0.207:
-------------------------------------------------------
Query: trace
                                           Addr: 208.254.0.207

Type escape sequence to abort.
Tracing the route to 208.254.0.207

  1 sjc2-core1-pos1-0.atlas.icix.net (165.117.59.29) 0 msec
    sjc2-core4-fa4-1-0.atlas.icix.net (165.117.50.134) 24 msec
    sjc2-core1-pos1-0.atlas.icix.net (165.117.59.29) 0 msec
  2 sjc2-core2-pos1-0.atlas.icix.net (165.117.59.33) 4 msec
    sjc1-core3-pos6-3.atlas.icix.net (165.117.60.157) 0 msec
    sjc2-core2-pos1-0.atlas.icix.net (165.117.59.33) 0 msec
  3 sjc1-core2-pos6-0.atlas.icix.net (165.117.60.201) 0 msec
    sjc3-core4-pos6-3.atlas.icix.net (165.117.67.138) 4 msec
    sjc1-core2-pos6-0.atlas.icix.net (165.117.60.201) 0 msec
  4 sjc3-core5-pos6-0.atlas.icix.net (165.117.67.241) 4 msec
    sfo2-core4-pos4-1.atlas.icix.net (165.117.64.9) 4 msec
    sjc3-core5-pos6-0.atlas.icix.net (165.117.67.241) 0 msec
  5 sfo2-core3-pos6-0.atlas.icix.net (165.117.48.13) 4 msec
    sfo2-core3-pos4-0.atlas.icix.net (165.117.50.193) 4 msec
    sfo2-core3-pos6-0.atlas.icix.net (165.117.48.13) 4 msec
  6 sfo2-core2-pos6-0.atlas.icix.net (165.117.48.9) 4 msec 4 msec 0 msec
  7 intermedia.uu.net (165.117.64.114) 8 msec 4 msec 8 msec
  8 105.at-6-0-0.XR3.SCL1.ALTER.NET (152.63.48.126) [AS 701] 4 msec
    105.at-5-0-0.XR4.SCL1.ALTER.NET (152.63.48.182) [AS 701] 8 msec
    105.at-6-0-0.XR3.SCL1.ALTER.NET (152.63.48.126) [AS 701] 4 msec
  9 0.so-0-0-0.XL2.SCL1.ALTER.NET (152.63.55.93) [AS 701] 8 msec
    0.so-1-0-0.XL1.SCL1.ALTER.NET (152.63.55.81) [AS 701] 4 msec
    0.so-0-0-0.XL2.SCL1.ALTER.NET (152.63.55.93) [AS 701] 4 msec
 10 0.so-3-0-0.TL1.SAC1.ALTER.NET (152.63.53.250) [AS 701] 8 msec
    0.so-3-0-0.TL2.SAC1.ALTER.NET (152.63.54.10) [AS 701] 8 msec
    0.so-3-0-0.TL1.SAC1.ALTER.NET (152.63.53.250) [AS 701] 8 msec
 11 0.so-3-0-0.TL2.DCA6.ALTER.NET (152.63.19.170) [AS 701] 88 msec
    0.so-6-0-0.TL1.DCA6.ALTER.NET (152.63.13.18) [AS 701] 84 msec
    0.so-3-0-0.TL2.DCA6.ALTER.NET (152.63.19.170) [AS 701] 100 msec
 12 0.so-6-0-0.XL1.DCA6.ALTER.NET (152.63.38.70) [AS 701] 80 msec
    0.so-6-0-0.XL2.DCA6.ALTER.NET (152.63.38.74) [AS 701] 84 msec
    0.so-6-0-0.XL1.DCA6.ALTER.NET (152.63.38.70) [AS 701] 84 msec
 13 0.so-6-0-0.WR2.IAD6.ALTER.NET (152.63.39.117) [AS 701] 84 msec
    0.so-6-0-0.WR1.IAD6.ALTER.NET (152.63.39.113) [AS 701] 84 msec
    0.so-6-0-0.WR2.IAD6.ALTER.NET (152.63.39.117) [AS 701] 88 msec
 14 0.so-0-0-0.UR1.IAD6.Alter.Net (157.130.59.70) [AS 701] 80 msec
    0.so-1-0-0.UR2.IAD6.Alter.Net (157.130.59.82) [AS 701] 88 msec
    0.so-0-0-0.UR1.IAD6.Alter.Net (157.130.59.70) [AS 701] 80 msec
 15 206.112.64.37 [AS 11486] 84 msec
    206.112.64.21 [AS 11486] 84 msec
    206.112.64.37 [AS 11486] 84 msec
 16 206.112.65.35 [AS 11486] 84 msec 88 msec 80 msec
 17 208.254.2.1 [AS 11486] 88 msec 88 msec 80 msec
 18 * * *
 19 * * *
 20 * * *
 21 * * *
 22 * * *
 23 * * *
 24 * * *
 25 * * *
 26 * * *
 27 * * *
 28 * * *
 29 * * *
 30 * * *
---------------------------------------------------------------

This confirms the path is being dropped. You can grab this and more info
on this issue by using http://nitrous.digex.net/mae/maew-lg.html
and the Looking Glass script they have.

It also offers a bit more intuitiveness to use the -A when using
traceroute and thus spilling the AS # of the hop.

Best Regards
/Dee

deem@wdm.com
wdm@deesignnet.com



This archive was generated by hypermail 2a23 : Wed Jan 23 2002 - 04:55:01 AKST