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-   -   30M : Le3 6 - network access denied? (https://www.cableforum.uk/board/showthread.php?t=33677860)

Chrysalis 02-06-2011 11:28

Re: Le3 6 - network access denied?
 
you got the same square patterns at 4am and just after 8am and again at 10.30am.

seems those for rest of day your utilisation is too high to show it. I think its only apparent if utilisation low enough.

craigj2k12 02-06-2011 11:48

Re: Le3 6 - network access denied?
 
fair enough i see. any idea what would cause that though?

Chrysalis 02-06-2011 13:06

Re: Le3 6 - network access denied?
 
Well I now know why vmng300's have better jitter. Its nothing to with processing power but rather that they have lower queue's for upstream packets, in affect they given higher priority than other modems for timeslots. This can be a downside tho because if there is enough congestion and the max delay isnt high enough then there will be packetloss. Delay is better than packet loss.

Its only my guess as to why this jumps up and down tho, it seems to jump downwards less when utilisation is higher on the port. Also if utilisation is high enough even when its down the jitter will be as high as when it jumps upwards anyway. My guess is the modem operates differently in how it queues packets when under enough load. I think another way of putting it I think the queue size is dynamic, it possibly switches between a low bandwidth mode with a small queue and a high bandwidth mode with a large queue (higher jitter).

---------- Post added at 14:06 ---------- Previous post was at 12:51 ----------

starting to get rougher.

C:\Windows\system32>ping -n 10 194.168.4.100

Pinging 194.168.4.100 with 32 bytes of data:
Reply from 194.168.4.100: bytes=32 time=20ms TTL=252
Reply from 194.168.4.100: bytes=32 time=14ms TTL=252
Reply from 194.168.4.100: bytes=32 time=16ms TTL=252
Reply from 194.168.4.100: bytes=32 time=9ms TTL=252
Reply from 194.168.4.100: bytes=32 time=13ms TTL=252
Reply from 194.168.4.100: bytes=32 time=17ms TTL=252
Reply from 194.168.4.100: bytes=32 time=21ms TTL=252
Reply from 194.168.4.100: bytes=32 time=10ms TTL=252
Reply from 194.168.4.100: bytes=32 time=11ms TTL=252
Reply from 194.168.4.100: bytes=32 time=22ms TTL=252

Ping statistics for 194.168.4.100:
Packets: Sent = 10, Received = 10, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 9ms, Maximum = 22ms, Average = 15ms

on my tbb graph the modem gone into a low queue mode and can see its 50% higher max latency than last night at 10pm and its only 2pm.

seems also speedtest.net even with proxy is not close to 3mbit now either.

Chrysalis 02-06-2011 16:03

Re: Le3 6 - network access denied?
 
[img]Download Failed (1)[/img]

---------- Post added at 17:03 ---------- Previous post was at 17:02 ----------

protocol shaping starts at 5pm so am curious if that rising blue hill drops off at 5pm.

desi112 02-06-2011 20:05

Re: Le3 6 - network access denied?
 
just checked my speed and I also now have 3mb upload :D

philce 02-06-2011 21:29

Re: Le3 6 - network access denied?
 
3Mb upload here too!

https://www.cableforum.co.uk/images/...011/06/143.png


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