Intermittent high latency on hop 2

E

eremos

Senior Member
Joined
Nov 30, 2003
Messages
788
Reaction score
0
Location
Ladysmith, KZN
Before I call Telkom and try to talk myself past 5 lines of support, I wanted to see if others have had experience with this sort of issue.

For the past few days, I've had big lag spikes, as shown in the trace. I haven't examined enough to determine if it's due to congestion, but it doesn't exclusively show up during peak hours so I'm doubtful.

Code: 
                                        My traceroute  [v0.82]
hex (0.0.0.0)                                                            Tue Aug  6 17:25:33 2013
Keys:  Help   Display mode   Restart statistics   Order of fields   quit
                                                          Packets               Pings
 Host                                                  Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. my.router                                           0.0%    50    0.5   0.4   0.4   0.6   0.0
 2. 196-215-42-129.dynamic.isadsl.co.za                 0.0%    50  268.4 245.5  13.9 384.1  76.4
 3. cdsl2-rba-vl2563.ip.isnet.net                       2.0%    50  242.3 251.9  47.9 369.6  77.3
 4. cdsl2-rba-vl150.ip.isnet.net                        2.0%    50  239.9 253.1  28.3 368.2  78.6
 5. 196.26.0.61                                         2.0%    50  209.1 259.7  49.7 385.5  80.8
 6. 196.26.0.130                                        2.0%    50  210.3 257.2  30.4 400.9  82.1
 7. 41-208-29-126.mtnns.net                             4.1%    50  251.1 258.1  27.2 357.2  74.7
 8. jh-cr-2.za--jh-pr-1.za.mtnns.net                    0.0%    49  266.2 260.1  27.4 375.2  76.0
 9. 196.44.31.99                                        0.0%    49  282.6 278.2  54.3 531.7  82.5
10. 196.30.1.53                                         4.1%    49  262.4 271.2  30.3 407.5  82.9
11. tengigabitethernet9-1.gw20.jnb6.za.mtnbusiness.net  4.1%    49  277.3 271.6  71.1 377.5  79.1
12. tengigabitethernet5-1.hr9.jnb6.za.mtnbusiness.net   2.0%    49  237.6 265.9  61.6 398.7  83.1
13. core-router1.jnb2.host-h.net                        0.0%    49  251.9 260.4  48.3 380.9  81.3
14. core-access-switch1-vlan1001.jnb.host-h.net         0.0%    49  253.9 258.3  57.1 377.0  83.9
15. mail.openweb.co.za                                  8.2%    49  294.9 254.7  28.4 361.9  79.5

So, if you've experienced this before, are Telkom support equipped to investigate traceroutes? Are they likely to make me buy a new router? Does there happen to be someone here who works for Telkom and can look at that exchange? :) If it helps, I live in Ladysmith, KZN.

Thanks

Edit: posted on pastebin so it's a little clearer: http://pastebin.com/jwgaH3RF
 
Last edited:
Could be related to the DSLAM backhaul capacity.

Try the Telkom guest account and do a traceroute to the the telkom site telkom.co.za in order to eliminate ISP issues.

Username: guest@telkomadsl
Password: guest

Username: guest1@telkomadsl
Password: guest1

Try those
 
Thanks for the tip. I tried the guest account, and the second hop looks good, but the 3rd router doesn't let me trace any further.

Code: 
                             My traceroute  [v0.82]
hex (0.0.0.0)                                          Tue Aug  6 21:50:04 2013
Keys:  Help   Display mode   Restart statistics   Order of fields   quit
                                       Packets               Pings
 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. my.router                         0.0%    20    0.5   0.5   0.4   0.5   0.0
 2. dsl-165-145-80-01.telkomadsl.co.  0.0%    20   13.6  14.1  13.3  15.7   0.6
 3. ???

The issue is intermittent though, so I'd have to run a longer test to be sure. I share this line so it'll have to wait for a quiet moment. I might even get a cheap local prepaid account for testing.

Cheers

ponder said:
Could be related to the DSLAM backhaul capacity.

Try the Telkom guest account and do a traceroute to the the telkom site telkom.co.za in order to eliminate ISP issues.

Username: guest@telkomadsl
Password: guest

Username: guest1@telkomadsl
Password: guest1

Try those
Click to expand...
 
eremos said:
Thanks for the tip. I tried the guest account, and the second hop looks good, but the 3rd router doesn't let me trace any further.

Code: 
                             My traceroute  [v0.82]
hex (0.0.0.0)                                          Tue Aug  6 21:50:04 2013
Keys:  Help   Display mode   Restart statistics   Order of fields   quit
                                       Packets               Pings
 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. my.router                         0.0%    20    0.5   0.5   0.4   0.5   0.0
 2. dsl-165-145-80-01.telkomadsl.co.  0.0%    20   13.6  14.1  13.3  15.7   0.6
 3. ???

The issue is intermittent though, so I'd have to run a longer test to be sure. I share this line so it'll have to wait for a quiet moment. I might even get a cheap local prepaid account for testing.

Cheers
Click to expand...

You seem clued up :)

Bear in mind that u sometimes also have to let the account be connected for an extended period of time before the (telkom) problems start.
 
Noted. This one does seem to show up immediately after a router reboot, but something somewhere could be remembering.

Right now it's doing something else again. Second hop is good, but there's 270ms between it and the next hop. That definitely has nothing to do with my exchange -- it's between 2 IS devices, though admittedly they could still be hosted on the Telkom network -- so I'll keep poking Openweb.

wingnut771 said:
You seem clued up :)

Bear in mind that u sometimes also have to let the account be connected for an extended period of time before the (telkom) problems start.
Click to expand...
 
eremos said:
Noted. This one does seem to show up immediately after a router reboot, but something somewhere could be remembering.

Right now it's doing something else again. Second hop is good, but there's 270ms between it and the next hop. That definitely has nothing to do with my exchange -- it's between 2 IS devices, though admittedly they could still be hosted on the Telkom network -- so I'll keep poking Openweb.
Click to expand...

Can you do a "ping -n 100 "ip" of your 2nd hop?
 
Denouncer said:
I'm not sure where Ladysmith connects through, but it's not impossible that it goes through PMB, or you're experiencing the same issue we are. But all areas in and around PMB are experiencing congestion at the moment.
Click to expand...

Maritzburg, ladysmith, newcastle are all major dssu sites that act as feeders for smaller sites. They major sites work back to durban & new germany.
 
Thanks for the posts. Your problem sounds about the same as mine Denouncer.

I opened a case with Telkom, which they promptly closed without doing anything, so I sent in an escalation form and am now waiting for a response. Will call them tomorrow or on Tuesday if I don't hear anything.
 
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X