What is going on?

arf9999

MyBroadband Member
Joined
Jul 5, 2004
Messages
6,791
Reaction score
14
Location
South Africa.
Saix.net
Ping statistics for 196.25.1.200:
Packets: Sent = 4987, Received = 4708, Lost = 279 (5% loss),
Approximate round trip times in milli-seconds:
Minimum = 42ms, Maximum = 995ms, Average = 70ms

Mweb.co.za
Ping statistics for 196.2.63.110:
Packets: Sent = 5349, Received = 5069, Lost = 280 (5% loss),
Approximate round trip times in milli-seconds:
Minimum = 42ms, Maximum = 814ms, Average = 69ms
iol.co.za
Ping statistics for 196.30.168.79:
Packets: Sent = 5395, Received = 5127, Lost = 268 (4% loss),
Approximate round trip times in milli-seconds:
Minimum = 42ms, Maximum = 998ms, Average = 72ms
mybroadband.co.za
Ping statistics for 41.203.17.1:
Packets: Sent = 5439, Received = 5163, Lost = 276 (5% loss),
Approximate round trip times in milli-seconds:
Minimum = 23ms, Maximum = 922ms, Average = 53ms

Those are all local....international below:

bbc.co.uk
Ping statistics for 212.58.224.131:
Packets: Sent = 5397, Received = 5101, Lost = 296 (5% loss),
Approximate round trip times in milli-seconds:
Minimum = 349ms, Maximum = 987ms, Average = 386ms

nhk.co.jp
Ping statistics for 61.58.37.103:
Packets: Sent = 5433, Received = 5146, Lost = 287 (5% loss),
Approximate round trip times in milli-seconds:
Minimum = 243ms, Maximum = 989ms, Average = 279ms

Why do I have consistent packet loss and latency spikes on all routes?
 
Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 384
US Margin 20
DS Margin 12
Trained Modulation ADSL_G.dmt
LOS Errors 0
DS Line Attenuation 53
US Line Attenuation 31
Peak Cell Rate 301 cells per sec
CRC Rx Fast 132
CRC Tx Fast 0
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path
 
arf9999, you have a couple of CRC errors which may be the cause. What is the uptime on your router (i.e. over how long a period is that error count applicable)?
 
arf9999, you have a couple of CRC errors which may be the cause. What is the uptime on your router (i.e. over how long a period is that error count applicable)?

Uptime is now around 2 hours 30 mins:
Transmit
Tx PDUs 19842
Tx Total Bytes 2597060
Tx Total Error Counts 0

Receive
Rx PDUs 22442
Rx Total Bytes 12796391
Rx Total Error Counts 436
 
Could you maybe post some traceroutes? They may prove interesting.
traceroutes...

1 23 ms 2 ms 2 ms login.router [192.168.1.1]
2 23 ms 21 ms 22 ms dsl-245-0-01.telkomadsl.co.za [41.245.0.1]
3 * * * Request timed out.
4 * * * Request timed out.
5 25 ms 25 ms 23 ms 196.43.10.130
6 24 ms 21 ms 25 ms 196.43.33.5
7 303 ms 303 ms 305 ms 196.43.9.54
8 329 ms 326 ms 326 ms 83.245.76.221
9 327 ms 326 ms 327 ms 209.85.252.42
10 331 ms 336 ms 331 ms 72.14.236.216
11 334 ms 337 ms 336 ms 209.85.248.216
12 353 ms 339 ms 340 ms 72.14.238.138
13 339 ms 337 ms 347 ms 72.14.236.15
14 347 ms 343 ms 343 ms 216.239.43.249
15 335 ms 338 ms 338 ms google.com [64.233.187.99]

Trace complete.
Tracing route to mybroadband.co.za [41.203.17.1]
over a maximum of 30 hops:

1 19 ms 2 ms 2 ms login.router [192.168.1.1]
2 * * * Request timed out.
3 23 ms 21 ms 23 ms rrba-ip-lir-1-gig-0-0-0.telkom-ipnet.co.za [196.
43.8.198]
4 25 ms 23 ms 21 ms 196.43.25.138
5 26 ms 26 ms 25 ms ge0-2.br1.jnb6.alter.net [196.30.16.181]
6 28 ms 29 ms 25 ms pc1.gw1.jnb6.alter.net [196.30.1.21]
7 26 ms 25 ms 29 ms vlan9.hr3.jnb6.alter.net [196.30.156.136]
8 25 ms 22 ms 30 ms firewall1.jnb2.host-h.net [196.7.216.173]
9 26 ms 31 ms 26 ms mybroadband.co.za [41.203.17.1]

Trace complete.
Tracing route to saix.net [196.25.1.200]
over a maximum of 30 hops:

1 20 ms 2 ms 2 ms login.router [192.168.1.1]
2 * * * Request timed out.
3 41 ms 42 ms 42 ms wblv-ip-essr-1-atm-2-0-0-2.telkom-ipnet.co.za [1
96.43.11.30]
4 43 ms 46 ms 43 ms saix.net [196.25.1.200]

Trace complete.
Tracing route to bbc.co.uk [212.58.224.131]
over a maximum of 30 hops:

1 20 ms 2 ms 2 ms login.router [192.168.1.1]
2 22 ms 23 ms 21 ms dsl-245-0-01.telkomadsl.co.za [41.245.0.1]
3 * * * Request timed out.
4 * * * Request timed out.
5 25 ms 25 ms 24 ms 196.43.10.130
6 50 ms 22 ms 23 ms 196.43.33.5
7 305 ms 306 ms 302 ms 196.43.9.54
8 352 ms 351 ms 352 ms 83.245.126.93
9 355 ms 351 ms 353 ms 212.58.238.153
10 353 ms 353 ms 354 ms bbc.co.uk [212.58.224.131]

Trace complete.
 
Last edited:
Errors are fine, and so are the traces. Downstream SNR looks a hint low to me.

The problem imo is the number of packets you are sending. With 5000 packets something is bound to go AWOL...which explains the "Maximum" being so high.

Not sure why the 5% loss though...that doesn't gel with the router stats. What parameters did you use for the ping command?
 
436 downstream errors after just 2.5 hours and ~13MB is pretty high, IMHO...

Oh and did you do the pings via a wireless or wired connection (to your modem/router)?
 
Well on the face of it your pings actually look fine from the traceroute. Did you leave that ping from the first post running overnight?
 
436 downstream errors after just 2.5 hours and ~13MB is pretty high, IMHO...

Oh and did you do the pings via a wireless or wired connection (to your modem/router)?
It's wireless, but I ran a separate ping to the router to see if there was any interference etc. Constant 2ms.

Errors are fine, and so are the traces. Downstream SNR looks a hint low to me.

The problem imo is the number of packets you are sending. With 5000 packets something is bound to go AWOL...which explains the "Maximum" being so high.
I was experiencing pages failing to load, timeouts etc. The maximum of 900ms odd was quite common over the period.

Not sure why the 5% loss though...that doesn't gel with the router stats. What parameters did you use for the ping command?
straightforward windows cmd ping: 32 bytes. The router was reset between the pings and the stats.

Well on the face of it your pings actually look fine from the traceroute. Did you leave that ping from the first post running overnight?
Nope, over a coupla hours while trying to browse the net. I tried two different accounts and reset the router a few times. the results were pretty similar. Today the connection seems fine... go figure.
 
Top
Sign up to the MyBroadband newsletter
X