New Modem/Router question

[#1]

Quote from: bobboulby

I'm not sure how to measure the latency though.

As Nick said get your (Packet InterNet) Gopher to measure it for you;

ping -n 25 -l 4096 ipaddressorhostname

"-n" increases the number of packets, as 4 is ok if you are just checking that a device is live and responding on the network, but to check latency I suggest between 25 and 100.
"-l" increases the packet size to 4K on a local network 64 bytes is to small for any real indication.

[#2]

Ping does seem to give quite a wide range of values:
Pinging ***.***.*.* with 4096 bytes of data:
Reply from ***.***.*.*: bytes=4096 time=78ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=117ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=124ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=81ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=70ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=43ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=5ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=5ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=369ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=199ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=7ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=5ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=42ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=177ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=105ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=45ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=7ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=6ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=9ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=6ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=6ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=73ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=6ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=123ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=5ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=5ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=93ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=5ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=9ms TTL=255
Reply from ***.***.*.*: bytes=4096 time=84ms TTL=255
Ping statistics for ***.***.*.*:
    Packets: Sent = 30, Received = 30, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 5ms, Maximum = 369ms, Average = 63ms
My Son plays games on line and it sems to work ok though. I'm no gamer myself so it's difficult for me to comment.
Bob
[Edit to include results from increase in packet size to 4096]

[#3]

I've just discovered that my Son is downloading a game demo from the PlayStation store. I'll post some more results when he's finished.
Also for comparison, I thought it might be interesting to post some results from pinging his PSP over wireless.
Bob

[#4]

You are seeing some serious jitter there, it will be interesting to see the results on a quite network.
For comparison, ping to my router over a 100M hard-wired  link
    Packets: Sent = 25, Received = 25, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 2ms, Maximum = 2ms, Average = 2ms

[#5]

On mine with wireless, even with a P2P download going i'm getting:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 1ms, Maximum = 3ms, Average = 2ms

[#6]

Hmm, mine shows some latency and scatter, although I am using a patch cable to connect to the router:

25 packets transmitted, 25 received, 0% packet loss, time 24001ms
rtt min/avg/max/mdev = 3.192/3.424/4.387/0.230 ms

When I ping the modem (I have separate modem and router devices):

25 packets transmitted, 25 received, 0% packet loss, time 24002ms
rtt min/avg/max/mdev = 3.667/4.551/5.740/0.553 ms

[#7]

Ok, over a quiet network:
Powerline to PS3
Ping statistics for ***.***.*.*:
    Packets: Sent = 30, Received = 30, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 4ms, Maximum = 117ms, Average = 11ms
Wireless to PSP (35% signal strength) Note the PSP is next to the PS3 in this test.
Ping statistics for ***.***.*.*:
    Packets: Sent = 30, Received = 24, Lost = 6 (20% loss),
Approximate round trip times in milli-seconds:
    Minimum = 39ms, Maximum = 181ms, Average = 87ms
Wireless to PSP (95% signal strength)
Ping statistics for ***.***.*.*:
    Packets: Sent = 30, Received = 30, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 13ms, Maximum = 20ms, Average = 16ms
Interesting. The conclusion seems to be that Powerline is better than wireless when signal strength is low, otherwise wireless gives better (more consistent) results.
Bob

[#8]

Hi, hope you can answer another ‘New Modem/Router’ query.
I’ve very recently upgraded my old W98 set up that had an integral card (just before it died completely) to a new Vista pc with a Netgear DG834G Wireless ADSL Modem /Router. All of this is, I’m delighted to say, working perfectly and the speed I receive has almost doubled. On checking my usage at the Members Centre I notice that there is download and upload figures even when the pc has not been used at all, how does this happen? 

[#9]

Hiya,
That must be a bit of a shock when using your first router!
That's actually quite common - Routers send and receive small bits of data continually, but this shouldn't add up to much.
I wouldn't worry about it too much.

[#10]

Thanks James,
I won’t be concerned.
Yes it was a bit of a    I can’t believe how quick everything is!  Office 2007 is making my head spin a bit though!
Again, thanks for your help James
Rob