Le3 6 - network access denied?

[desi112]

Hey guys, I was wondering if anyone else got Network Access Denied this morning , Lost connection for around 40 minutes, Tried several restarts, just got it up and running now...
seems very flakey right now...cant even get a speedtest to work..sites taking ages to load


Fri May 20 09:18:54 2011 Critical (3) DHCP FAILED - Requested Info not supported.;CM-MAC=
Fri May 20 09:18:42 2011 Notice (6) CMTS DCC 299000000 MHz
Fri May 20 09:18:28 2011 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=
Fri May 20 09:18:20 2011 Notice (6) CMTS DCC 307000000 MHz
Fri May 20 09:18:00 2011 Notice (6) CMTS DCC 323000000 MHz
Fri May 20 09:17:20 2011 Notice (6) CMTS DCC 315000000 MHz
Fri May 20 09:15:55 2011 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time

getting disconnections every minute

Looks like i've been moved from cpc15 to cpc 3....

1 9 ms 11 ms 12 ms cpc3-leic16-2-0-gw.8-1.cable.virginmedia.com
2 10 ms 11 ms 11 ms leic-core-1a-ae3-3501.network.virginmedia.net [
2.3.36.93]
3 13 ms 15 ms 11 ms leed-bb-1a-as8-0.network.virginmedia.net [213.1
5.172.17]

[Chrysalis]

I think cpc15 was phil's port so maybe you guys got another reseg, wish I had another also. Leics as far as I know got a new UBR back in march so I expect loads of node splits etc. going on to use the new capacity.

whats funny is in leics when they do work its in middle of day, evening whatever.

[desi112]

Just had another disconnection....

Tue May 24 19:28:03 2011 Critical (3) DHCP FAILED - Requested Info not supported.;
Tue May 24 19:27:48 2011 Notice (6) CMTS DCC 315000000 MHz
Tue May 24 19:27:28 2011 Critical (3) No Ranging Response received - T3
Tue May 24 19:27:17 2011 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Tue May 24 19:26:45 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;

still on CPC 3...

[Chrysalis]

I am wondering if any shifted to my port, my average jitter has shot up on my tbb graph compared to last week but pinging from here to other locations still seems the same.

[philce]

Ive been seeing loads of disconnects over the last few weeks, several required a reboot of the SHub to reconnect. I just put it down to the (carp) SHub firmware!

Im on CPC6 now, not sure since when.



Just had another disconnection....

Tue May 24 19:28:03 2011 Critical (3) DHCP FAILED - Requested Info not supported.;
Tue May 24 19:27:48 2011 Notice (6) CMTS DCC 315000000 MHz
Tue May 24 19:27:28 2011 Critical (3) No Ranging Response received - T3
Tue May 24 19:27:17 2011 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
Tue May 24 19:26:45 2011 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;

still on CPC 3...

[AaronCooper]

My 10mb has been pretty much perfect since i had it, apart from when some work was being done on the green box near to me but today i've noticed i was having problems with my connection so i checked my tbb meter.

Download Failed (1)

I only got online about 2 hours ago, not sure why it's playing up. Ah well, i switch to 30mb tomorrow anyway.

[philce]

I suspect works relating to the new upload speeds is in progress.
According to VM we are due to be done in July, so I suspect we should see things happening in the next few weeks.

My 10mb has been pretty much perfect since i had it, apart from when some work was being done on the green box near to me but today i've noticed i was having problems with my connection so i checked my tbb meter.

http://www.thinkbroadband.com/ping/share-thumb/84a9da186edc908f81603c2b58ad6ac4-24-05-2011.png

I only got online about 2 hours ago, not sure why it's playing up. Ah well, i switch to 30mb tomorrow anyway.

[Chrysalis]

phil you have a new graph since your move? interesting to see if your latency improved.

[philce]

OK, just created a new monitor, looks like I got yet another new IP last week (handn't noticed!!) I assume that was when I was moved to CPC6.

It will obviously take time to get details on the graph.

https://www.cableforum.co.uk/images/local/2011/05/64.png (http://www.thinkbroadband.com/ping/share/7afb23ffbef778e857b303908ee7a329.html)

[Chrysalis]

thats defenitly looking better than when your last graph was posted.

here is mine for today.

http://www.thinkbroadband.com/ping/share-thumb/d80bf05b7e7b498508db12f3b1143b17-26-05-2011.png (http://www.thinkbroadband.com/ping/share/d80bf05b7e7b498508db12f3b1143b17-26-05-2011.html)

[philce]

Are the spikes you using the connection?

[Chrysalis]

the square pattern is the vmng300 modem, overall its better than the superhub but it displays somewhat odd behaviour with that. The small large spikes are probably utilisation spikes on the UBR.

If your graph is from a superhub its looking very good.

here is a graph from the last day I used the superhub which was earlier this week. It says vmng300 but is the superhub, you will notice the blue bit is much thicker than yours.

http://www.thinkbroadband.com/ping/share-thumb/0ca57a9a55752fcce7c25f25ec12d59c-23-05-2011.png (http://www.thinkbroadband.com/ping/share/0ca57a9a55752fcce7c25f25ec12d59c-23-05-2011.html)

[Chrysalis]

seems on the 25th may and again on the 29th may I have had utilisation increases. On the 24th may my utilisation didnt visibly increase until post 6pm. Then it moved to around 3pm and now it visibly goes up after 10am. midday now has higher utilisation than I had at 8pm 2 weeks ago.

In addition for a lot of the day yesterday I had specks of packet loss.

[Chrysalis]

I got the uplift this morning, speedtest.net isnt working properly tho so I cannot post speed result but is 31mbit down down and 3mbit up.

Download Failed (1) (http://www.speed.io)

Primary Downstream Service Flow
SFID : 26585
Max Traffic Rate : 33330000 bps
Max Traffic Burst : 3044 bytes
Min Traffic Rate : 0 bps
Primary Upstream Service Flow
SFID : 26842
Max Traffic Rate : 3333000 bps
Max Traffic Burst : 8160 bytes
Min Traffic Rate : 0 bps
Max Concatenated Burst : 8160 bytes
Scheduling Type : Best Effort

[craigj2k12]

the square pattern is the vmng300 modem

no it isnt, im using the same modem as you ;)

https://www.cableforum.co.uk/images/local/2011/06/120.png

[Chrysalis]

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]

fair enough i see. any idea what would cause that though?

[Chrysalis]

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]

Download Failed (1) (http://www.thinkbroadband.com/ping/share/2abe923bea4dc80d5f1ae9d011ea45f6-02-06-2011.html)

---------- 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]

just checked my speed and I also now have 3mb upload :D

[philce]

3Mb upload here too!

https://www.cableforum.co.uk/images/local/2011/06/143.png (http://www.speedtest.net)