xtreamuk
11-07-2010, 13:32
Hi Guys
Before I jump through all the hoops of Virgin's broadband tech support I was looking for your thoughts.
Recently, I've been getting a pretty crap service from Virgin. I'm on 10Mb. Speeds are generally 'ok' however its the latency thats killing me.
VoIP is horrendous as is trying to use RDP. I know its a resedential service however I've been working from home this week (and next) and this is were I have really noticed it.
Issue from what I can see seems to be packet loss:
I cant ping my next hop directly, so I'm assuming im pinging the public interface on my uBR. Results:
Ping statistics for 80.4.64.225:
Packets: Sent = 100, Received = 93, Lost = 7 (7% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 3035ms, Average = 92ms
Keep in mind, there is nothing significant running on my connection at the time of testing. I D/C'd everything other than the PC I'm on.
It was suggested to gain a 'real' indication of packet loss, i send out ping packets using my MTU. Done this from my linux system last night and the results were pretty shocking. Over 1000 attempts, 36% of thoes failed and the ping spikes are noticable. Often peaking at over 1000ms.
Modem Specs:
Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 3
Downstream Frequency : 403000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : -10.8 dBmV
Downstream SNR : 38.4 dB
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 29200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 52.5 dBmV
Upstream Mini-Slot Size : 2
Using an NTL:250
Cheers Guys
Before I jump through all the hoops of Virgin's broadband tech support I was looking for your thoughts.
Recently, I've been getting a pretty crap service from Virgin. I'm on 10Mb. Speeds are generally 'ok' however its the latency thats killing me.
VoIP is horrendous as is trying to use RDP. I know its a resedential service however I've been working from home this week (and next) and this is were I have really noticed it.
Issue from what I can see seems to be packet loss:
I cant ping my next hop directly, so I'm assuming im pinging the public interface on my uBR. Results:
Ping statistics for 80.4.64.225:
Packets: Sent = 100, Received = 93, Lost = 7 (7% loss),
Approximate round trip times in milli-seconds:
Minimum = 11ms, Maximum = 3035ms, Average = 92ms
Keep in mind, there is nothing significant running on my connection at the time of testing. I D/C'd everything other than the PC I'm on.
It was suggested to gain a 'real' indication of packet loss, i send out ping packets using my MTU. Done this from my linux system last night and the results were pretty shocking. Over 1000 attempts, 36% of thoes failed and the ping spikes are noticable. Often peaking at over 1000ms.
Modem Specs:
Cable Modem Downstream
Downstream Lock : Locked
Downstream Channel Id : 3
Downstream Frequency : 403000000 Hz
Downstream Modulation : QAM256
Downstream Symbol Rate : 5360.537 Ksym/sec
Downstream Interleave Depth : taps32Increment4
Downstream Receive Power Level : -10.8 dBmV
Downstream SNR : 38.4 dB
Cable Modem Upstream
Upstream Lock : Locked
Upstream Channel ID : 2
Upstream Frequency : 29200000 Hz
Upstream Modulation : QPSK
Upstream Symbol Rate : 2560 Ksym/sec
Upstream transmit Power Level : 52.5 dBmV
Upstream Mini-Slot Size : 2
Using an NTL:250
Cheers Guys