Official Crystal Web ADSL performance feedback thread Part 2...

Are you satisfied with your Crystal Web account?

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agentrfr said:
Getting weird packet loss:

Seems to be happening at both 196.6.121.198 and rhwh-ip-esr-3-wan.telkom-ipnet.co.za
Code: 
Target Name: news.is.co.za
         IP: 196.26.208.250
  Date/Time: 2014-11-12 09:50:43 AM to 2014-11-12 03:07:50 PM

Hop Sent Err PL% Min  Max Avg  Host Name / [IP]
 1 19027   0 0.0   0  689   0  [192.168.0.1]
 2 19027  91 0.5   7 1411  14  [105.233.12.1]
 3 19027 176 0.9   9 1399  17  [196.6.121.198]
 4 19027 269 1.4   9 1399  17  rhwh-ip-esr-3-wan.telkom-ipnet.co.za [196.25.245.121]
 5 19027 308 1.6   9 1380  18  rrba-ip-lir-1-gig-3-0-0.telkom-ipnet.co.za [196.43.11.134]
 6 19027 320 1.7   9 1356  19  rrba-ip-se-2-gig-2-0-0-102.telkom-ipnet.co.za [196.43.25.138]
 7 19027 323 1.7   9 1327  22  internet-solutions-gw.telkom-ipnet.co.za [196.25.46.90]
 8 19027 341 1.8  10 1336  20  core1a-pkl-te-1-1.ip.isnet.net [196.26.0.60]
 9 19027 338 1.8  10 1315  19  cdsl1-rba-te1-1.ip.isnet.net [196.26.0.217]
10 19027 360 1.9  10 1331  19  cdsl2-rba-vl8.ip.isnet.net [196.26.208.250]
Click to expand...

The 0.5% packet loss at the exchange is where the packets are dropping there. This will always increase packet loss further up the hops as more packets are resent and more therefore expire. The biggest issue however is probably not the exchange in this case though - the 689ms hop to the router/modem is in all likelihood the culprit here, causing packets to expire, and appearing to be packet loss at the exchange. This is one of those where a good power cycle is needed, and you need to find out why the router is occasionally responding so slowly. While there is no packet loss on the router, it is causing massive buffering of packets, meaning their TTL will expire further down the route.
 
Crystal Web said:
The 0.5% packet loss at the exchange is where the packets are dropping there. This will always increase packet loss further up the hops as more packets are resent and more therefore expire. The biggest issue however is probably not the exchange in this case though - the 689ms hop to the router/modem is in all likelihood the culprit here, causing packets to expire, and appearing to be packet loss at the exchange. This is one of those where a good power cycle is needed, and you need to find out why the router is occasionally responding so slowly. While there is no packet loss on the router, it is causing massive buffering of packets, meaning their TTL will expire further down the route.
Click to expand...
No. Ttl is number of hops. Not affected by latency. Timeouts, possibly.
 
Sinbad said:
No. Ttl is number of hops. Not affected by latency. Timeouts, possibly.
Click to expand...

True, and perhaps not the best wording. If the datagram can't be reassembled then the packets will still drop - point being this may not be the exchange if the router is inducing the packet "buffering".
 
New portal looks nice but I noticed port reset button is no longer available.
 
Nefertiti said:
Anything up with international traffic? I am downloading Itunes and the 120mb file is taking an hour and a half already with another 2 hours to go.
Click to expand...

Took me over 5 hours to download 236mb Acronis file, tried CW and backup account, CW was just a tad faster
 
My ADSL just died, can't connect with any account

Checking modem shows no IP, subnet, gateway or DNS
 
Sinbad said:
woss url for new portal plox?
Click to expand...
You can now click the customer login on our site and get into the very early beta version of the portal. Login details are your email and adsl password. Occasionally you'll need support to activate your access on their side if you can't get in the first time around...
 
Just saw the banner on CW's homepage about the high contention on Tier 1 traffic. Since I haven't kept up constantly, what is the difference between Tier 1 and Tier 2 data? And if Tier 1 is affected does that automatically mean Tier 2 is affected?

Thanks :)
 
Pythos said:
Just saw the banner on CW's homepage about the high contention on Tier 1 traffic. Since I haven't kept up constantly, what is the difference between Tier 1 and Tier 2 data? And if Tier 1 is affected does that automatically mean Tier 2 is affected?

Thanks :)
Click to expand...

Tier 1 data has the highest priority on the network on all protocols. It's how one provides "unshaped" data - in other words no active shaping takes place on any specific protocol and performance is subjected only to normal QoS of a network. Tier 2 is part of the actively shaped aspect of the network, with some protocols actively shaped. Tier 3 is the same, with different shaping and priority policies.

The network across the spectrum is under pressure until the network rollout is completed end of this week, which is affecting tier 1 services - rather than allow contentions to increase across the spectrum and risk anything untoward happening across all protocols, QoS of the network is adding contention rather to download protocols instead to ensure that other services used by our subscribers like Netflix and YouTube are not affected, while keeping gaming pings as consistent as possible too. Download protocols are slower than should be at the moment.
 
Last edited:
In lieu of the decreased speed on download protocols at the moment, as soon as the network update is completed we will switch off shaping and in all likelihood not switch it back on this month, irrespective of data usage (within reason). We may extend this to next month as well to apologise for the inconvenience.
 
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