Forum Articles
  Welcome back Join CF
You are here You are here: Home | Forum | Router issues with icmp?

You are currently viewing our boards as a guest which gives you limited access to view most of the discussions, articles and other free features. By joining our Virgin Media community you will have full access to all discussions, be able to view and post threads, communicate privately with other members (PM), respond to polls, upload your own images/photos, and access many other special features. Registration is fast, simple and absolutely free so please join our community today.


Welcome to Cable Forum
Go Back   Cable Forum > Virgin Media Services > Virgin Media Internet Service
Reload this Page Router issues with icmp?
Register FAQ Members List Calendar Mark Forums Read

Router issues with icmp?
Reply
 
Thread Tools
Old 14-05-2008, 18:47   #1
isf
Inactive
 
Join Date: Apr 2006
Posts: 73
isf is an unknown quantity at this point
Router issues with icmp?
Can't appear to traceroute out of ntl network, tcptrace is fine. Can anybody else confirm?

Code:
ping -c 20 news.bbc.co.uk
PING newswww.bbc.net.uk (212.58.226.20) 56(84) bytes of data.
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=3 ttl=54 time=34.5 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=4 ttl=54 time=18.7 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=5 ttl=54 time=19.4 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=6 ttl=54 time=22.2 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=7 ttl=54 time=19.4 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=8 ttl=54 time=18.6 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=9 ttl=54 time=38.0 ms
64 bytes from newslb11.thdo.bbc.co.uk (212.58.226.20): icmp_seq=10 ttl=54 time=18.1 ms

--- newswww.bbc.net.uk ping statistics ---
20 packets transmitted, 8 received, 60% packet loss, time 18999ms
rtt min/avg/max/mdev = 18.120/23.644/38.020/7.441 ms
Code:
 sudo traceroute news.bbc.co.uk
traceroute to newswww.bbc.net.uk (212.58.226.33), 64 hops max, 52 byte packets
 1  x.x.x.x (x.x.x.x)  1 ms  1 ms  1 ms
 2  x.x.x.x (x.x.x.x)  9 ms  8 ms  8 ms
 3  xxxx.inet.ntl.com (x.x.x.x)  9 ms  10 ms  8 ms
 4  bagu-t3core-1b-ge-015-0.inet.ntl.com (195.182.175.45)  9 ms  11 ms  8 ms
 5  lee-bb-b-so-130-0.inet.ntl.com (80.5.161.157)  11 ms  11 ms  8 ms
 6  pop-bb-a-as1-0.inet.ntl.com (213.105.175.130)  15 ms  14 ms  16 ms
 7  * * *
 8  * * *
 9  * * *
10  * * *
Code:
sudo tcptraceroute news.bbc.co.uk
Selected device eth0, address x.x.x.x, port 55750 for outgoing packets
Tracing the path to news.bbc.co.uk (212.58.226.8) on TCP port 80 (www), 30 hops max
 1  x.x.x.x  1.015 ms  0.964 ms  1.057 ms
 2  x.x.x.x  16.195 ms  54.837 ms  25.319 ms
 3  xxxx.inet.ntl.com (x.x.x.x)  10.260 ms  11.089 ms  10.135 ms
 4  bagu-t3core-1b-ge-017-0.inet.ntl.com (195.182.179.185)  24.876 ms  18.562 ms  9.628 ms
 5  lee-bb-b-so-130-0.inet.ntl.com (80.5.161.157)  42.717 ms  22.250 ms  9.057 ms
 6  pop-bb-a-as1-0.inet.ntl.com (213.105.175.130)  23.690 ms  15.702 ms  14.206 ms
 7  pop-bb-b-ae0-0.inet.ntl.com (213.105.174.230)  15.523 ms  17.824 ms  17.392 ms
 8  tele-ic-2-as0-0.inet.ntl.com (62.253.184.6)  17.787 ms  27.678 ms  13.758 ms
 9  ntl-ge2-8.prt0.thdo.bbc.co.uk (212.58.239.217)  16.877 ms  41.377 ms  15.909 ms
10  212.58.238.129  37.555 ms  46.864 ms  17.757 ms
11  newslb14.thdo.bbc.co.uk (212.58.226.8) [open]  27.006 ms  25.185 ms  37.407 ms
isf is offline   Reply With Quote
Advertisement
Old 14-05-2008, 19:04   #2
Graham M
-
 
Graham M's Avatar
 
Join Date: Jul 2003
Location: Poole, Dorset
Age: 40
Services: FreeSat+ Tivo V-Box VM 60MBit
Posts: 13,365
Graham M has a pair of shiny starsGraham M has a pair of shiny stars
Graham M has a pair of shiny starsGraham M has a pair of shiny starsGraham M has a pair of shiny starsGraham M has a pair of shiny starsGraham M has a pair of shiny starsGraham M has a pair of shiny starsGraham M has a pair of shiny starsGraham M has a pair of shiny stars
Send a message via MSN to Graham M Send a message via Yahoo to Graham M
Re: Router issues with icmp?
They look fine to me, the timeouts could be due to an overloaded router as ICMP packets normally get dropped if traffic volume is high
Graham M is offline   Reply With Quote
Old 14-05-2008, 19:04   #3
Jon T
Inactive
 
Join Date: Jun 2003
Location: Mansfield, Notts
Age: 46
Services: Virgin Media Telephone and 100Mb broadband, Sky Q
Posts: 1,994
Jon T has reached the bronze age
Jon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze ageJon T has reached the bronze age
Re: Router issues with icmp?
works fine from here:

Code:
Tracing route to newswww.bbc.net.uk [212.58.226.20]
over a maximum of 30 hops:

  1    <1 ms    <1 ms    <1 ms  efw-1209668945.localdomain [192.168.200
  2     9 ms     6 ms     6 ms  10.225.80.1
  3     8 ms     7 ms     7 ms  nott-t2cam1-a-v107.inet.ntl.com [81.109

  4    11 ms     7 ms     7 ms  nott-t3core-1a-ge-013-0.inet.ntl.com [1
4.217]
  5    10 ms     9 ms    12 ms  lee-bb-a-as0-0.inet.ntl.com [213.105.17
  6    13 ms    13 ms    14 ms  pop-bb-b-as1-0.inet.ntl.com [62.253.185
  7    16 ms    14 ms    14 ms  tele-ic-2-as0-0.inet.ntl.com [62.253.18
  8    18 ms    14 ms     *     ntl-ge2-8.prt0.thdo.bbc.co.uk [212.58.2
  9    14 ms    15 ms    13 ms  212.58.238.153
 10    16 ms    14 ms    14 ms  newslb11.thdo.bbc.co.uk [212.58.226.20]
ping works on icmp echo requests, so that, and the fact my tracert works suggests that't not the problem.

ICMP does have lower prority than TCP/UDP traffic though, so the router could be dropping the ICMP packets if it's "a bit busy".
Jon T is offline   Reply With Quote
Old 14-05-2008, 19:07   #4
r00t
Inactive
 
Join Date: Nov 2006
Location: In your base =)
Services: Your pseudo 'tech' ego.
Posts: 1,062
r00t has reached the bronze age
r00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze ager00t has reached the bronze age
Re: Router issues with icmp?
C:\Console>tracert www.bbc.net.uk

Tracing route to www.bbc.net.uk [212.58.253.71]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms 192.168.0.1
2 11 ms 8 ms 8 ms 10.4.xx.xx
3 7 ms 22 ms 7 ms 62.30.0.49
4 18 ms 18 ms 17 ms lee-bb-a-ge-320-0.inet.ntl.com [195.182.178.145]

5 52 ms 20 ms 17 ms pop-bb-b-as1-0.inet.ntl.com [62.253.185.238]
6 * * * Request timed out.
7 18 ms 17 ms 19 ms ntl-ge2-8.prt0.thdo.bbc.co.uk [212.58.239.217]
8 20 ms 15 ms 15 ms 212.58.238.129
9 20 ms 17 ms 17 ms te12-1.hsw0.cwwtf.bbc.co.uk [212.58.239.222]
10 25 ms 17 ms 19 ms www2.cwwtf.bbc.co.uk [212.58.253.71]

Trace complete.
r00t is offline   Reply With Quote
Old 14-05-2008, 19:18   #5
Sirius
Grumpy Fecker
 
Sirius's Avatar
 
Join Date: Jul 2007
Location: Warrington
Age: 65
Services: Every Weekend
Posts: 17,030
Sirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver bling
Sirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver blingSirius has a lot of silver bling
Re: Router issues with icmp?
Yep all fine here in Warrington
#


Tracing route to www.bbc.net.uk [212.58.251.215]
over a maximum of 30 hops:

1 2 ms <1 ms <1 ms 192.168.0.1
2 10 ms 10 ms 14 ms 10.235.84.1
3 20 ms 6 ms 9 ms bagu-t2cam1-a-v121.inet.ntl.com [80.5.
4 26 ms 9 ms 13 ms bagu-t3core-1a-ge-017-0.inet.ntl.com
5 8 ms 10 ms 17 ms man-bb-a-so-310-0.inet.ntl.com [80.5.19.181]
6 27 ms 17 ms 14 ms gfd-bb-b-so-200-0.inet.ntl.com [62.252
7 16 ms 44 ms 16 ms redb-ic-1-as0-0.inet.ntl.com [62.253.1
8 20 ms 41 ms 29 ms 212.58.238.189
9 18 ms 17 ms 16 ms 212.58.238.133
10 17 ms 17 ms 19 ms 212.58.239.58
11 14 ms 16 ms 14 ms www8.telhc.bbc.co.uk [212.58.251.215]
__________________
The UK is now the regime of Kim Jong Starmer the UK's dictator
Sirius is offline   Reply With Quote
Old 14-05-2008, 20:40   #6
isf
Inactive
 
Join Date: Apr 2006
Posts: 73
isf is an unknown quantity at this point
Re: Router issues with icmp?
Thanks all.

The exact problem was severe SSH lag and timeouts when connecting to a specific server, I could SSH into to other machines fine. That's all working fine now, but I still can't traceroute anything outside the NTL network from home
isf is offline   Reply With Quote
Reply

« Previous Thread | Next Thread »
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 12:16.

Contact Us - Service Status - Cable Forum - Archive - Privacy Statement - Terms of Service - Top

Server: osmium.zmnt.uk
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
All Posts and Content are © Cable Forum
Copyright © 2026 Cable Forum Hosted On Hetzner Cloud