Packet Loss ?!?

[eztutty]

Hi all,

After running Dan Elwell's Broadband Speed Test, most the tests were fine, but 2 reported "A Small Amount Of Packet Loss has Been Detected, This Should Be Investigated" (see attached screenshot)

I am using a Linksys BEFSR41 router, with 2 PC's connected, and i'm on NTL's 1.5mbit service via STB.

How can i stop the packet loss ?

Thanks

EZTutty

Try a few continuous pings to the sites and see what you get.

[eztutty]

After 3 pings with no loss i got this: -

Pinging www.club.cc.cmu.edu [128.2.4.154] with 32 bytes of data:
Reply from 128.2.4.154: bytes=32 time=107ms TTL=45
Reply from 128.2.4.154: bytes=32 time=106ms TTL=45
Reply from 128.2.4.154: bytes=32 time=101ms TTL=45
Request timed out.

Ping statistics for 128.2.4.154:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 101ms, Maximum = 107ms, Average = 104ms

After 6 pings with no loss i got this: -

Pinging www.swansea.ac.uk [137.44.1.7] with 32 bytes of data:
Reply from 137.44.1.7: bytes=32 time=54ms TTL=237
Reply from 137.44.1.7: bytes=32 time=32ms TTL=237
Request timed out.
Request timed out.
Ping statistics for 137.44.1.7:
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
Approximate round trip times in milli-seconds:
Minimum = 32ms, Maximum = 54ms, Average = 43ms

:s

[Nuttah]

I have been getting the same problem for the past 2 weeks. Pinging the same IP I am getting a 20% packet loss. Surely this cannot be right?!

Pinging www.swansea.ac.uk [137.44.1.7] with 32 bytes of data:
Request timed out.
Reply from 137.44.1.7: bytes=32 time=29ms TTL=237
Reply from 137.44.1.7: bytes=32 time=28ms TTL=237
Reply from 137.44.1.7: bytes=32 time=29ms TTL=237
Request timed out.
Reply from 137.44.1.7: bytes=32 time=28ms TTL=237
Reply from 137.44.1.7: bytes=32 time=28ms TTL=237
Reply from 137.44.1.7: bytes=32 time=30ms TTL=237
Reply from 137.44.1.7: bytes=32 time=31ms TTL=237
Reply from 137.44.1.7: bytes=32 time=29ms TTL=237

Ping statistics for 137.44.1.7:
Packets: Sent = 10, Received = 8, Lost = 2 (20% loss),
Approximate round trip times in milli-seconds:
Minimum = 28ms, Maximum = 31ms, Average = 29ms

[carlingman]

Originally Posted by eztutty

Hi all,

After running Dan Elwell's Broadband Speed Test, most the tests were fine, but 2 reported "A Small Amount Of Packet Loss has Been Detected, This Should Be Investigated" (see attached screenshot)

I am using a Linksys BEFSR41 router, with 2 PC's connected, and i'm on NTL's 1.5mbit service via STB.

How can i stop the packet loss ?

Thanks

EZTutty

If it is the NTL 2000 or 4000 STB take a look here

[eztutty]

it's the new silver samsung box

[sasilrls]

I'm getting a similar result..actually it's alot worse for me,when i do a route trace from the dos command;of the first seven servers associated with NTL i get alot of packet loss until i leave the NTL servers(i have had upto a 38% packet loss most of the time all lost on NTL servers) .
I am migrating to BT on th 8/2/5 because i've heard alot about NTL b/b being crap.I will post the performance of BT.By the way i use my NTL B/B 1.5m for xbox gaming so packet loss is unbelievably vital.......bye.

[Carth]

I've been experiencing random packet loss (from 2% - 20%) for about 5 months. I rang to enquire about any possible problems in the area and a nice lady (in I presume CS) told me she would put a report about it onto my file ...
She told me to ring back when the packet loss stopped ...

I haven't rang back ... obviously ...

[Hans Gruber]

I've been getting a lot of a loss for the last week or so, and I've narrowed it down to "tele-ic-2-so-100-0.inet.ntl.com". According to ping plotter I'm getting a constant 10-40% packet loss to it. I would phone NTL but from experience they won't know what I'm talking about.

[SteJ]

I've been getting packet loss as well for the last week or so, and i keep getting kicked from online games because of it.

[sasilrls]

hi........also it's intresting to note that NTL are the only B/B suplier that will not accept these test results,not even if it's a good one like dan elwell's speed test(a little frightened i think).

[Neil]

Originally Posted by sasilrls

hi........also it's intresting to note that NTL are the only B/B suplier that will not accept these test results,not even if it's a good one like dan elwell's speed test(a little frightened i think).

They've always been the same in my experience-they will accept anything but facts that prove the issue is their end.

to the site BTW.

[APS]

Originally Posted by Hans Gruber

I've been getting a lot of a loss for the last week or so, and I've narrowed it down to "tele-ic-2-so-100-0.inet.ntl.com". According to ping plotter I'm getting a constant 10-40% packet loss to it. I would phone NTL but from experience they won't know what I'm talking about.

I too can see this packet loss from here (Shepshed). That router has extended and variable ping times and packet losses in the range indicated. I guess it is overloaded.

Perhaps someone from within NTL could please pass on the message to the network team rather than us have to try to report it on the phone.

APS

[Ignition]

I think we've been through and through tele-ic-1 / 2 - unless there are packets being dropped behind those routers on the traceroutes that are being shown not interested as it's not indicative of a fault.

Try tracing through a foundry based network you'll see similar results but no spikes at the other end - routers are there to route, not answer pings, and so long as they are delivering packets to the nodes behind them in a timely fashion there's no fault:

3 181 ms 16 ms 16 ms 82-197-65-225.hi-velocity.net [82.197.65.225] <<< spike due to it being a foundry box, no spike on node behind, no fault!
4 17 ms 18 ms 18 ms 82.197.95.122

Please also remember that tele-ic-2 connects to LINX and necessarily carries a full internet table, when its' routes are being updated is it any surprise it's busy? It's routing and switching fabrics are unaffected by this, so no worries.

[Hans Gruber]

Well I'm losing packets somewhere while gaming, and it's not my end, nor the servers. So that leaves either NTL or Telehouse. Does it take a server 2 weeks+ to update it's routes?