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Old March 22nd 15, 10:14 AM posted to uk.telecom.broadband
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Default Packet loss seems to have increased, how to diagnose?

My son and I both felt recently that "the internet seemed a bit slow".

I finally took a harder look at things just now and we seem to be
getting rather more packet loss than seems reasonable, typical is this
sort of ping response:-

chris$ ping cheddar.halon.org.uk
PING cheddar.halon.org.uk (217.10.144.130) 56(84) bytes of data.
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=5 ttl=48 time=35.8 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=6 ttl=48 time=33.5 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=7 ttl=48 time=34.6 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=8 ttl=48 time=34.1 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=9 ttl=48 time=33.9 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=10 ttl=48 time=37.3 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=12 ttl=48 time=35.0 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=14 ttl=48 time=34.1 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=15 ttl=48 time=40.3 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=16 ttl=48 time=34.2 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=17 ttl=48 time=35.9 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=18 ttl=48 time=34.4 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=19 ttl=48 time=33.6 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=20 ttl=48 time=34.4 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=21 ttl=48 time=34.6 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=22 ttl=48 time=33.9 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=24 ttl=48 time=35.8 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=25 ttl=48 time=34.6 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=26 ttl=48 time=34.7 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=28 ttl=48 time=34.5 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=29 ttl=48 time=37.8 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=30 ttl=48 time=34.8 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=31 ttl=48 time=33.6 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=32 ttl=48 time=34.2 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=33 ttl=48 time=34.4 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=36 ttl=48 time=33.8 ms
64 bytes from cheddar.halon.org.uk (217.10.144.130): icmp_seq=37 ttl=48 time=35.9 ms
^C
--- cheddar.halon.org.uk ping statistics ---
37 packets transmitted, 27 received, 27% packet loss, time 36095ms
rtt min/avg/max/mdev = 33.593/34.998/40.325/1.477 ms

It seems to take a long time to even start and then loses packets on a
pretty regular basis. I'm sure it used to be better than this.

The ADSL router is a Draytek Vigor 2820n and it's reporting:-

ADSL Information ( ADSL Firmware Version: 232201_A)
TX Cells RX Cells TX CRC errs RX CRC errs
14948715 220326963 1056 27764

Mode State Up Speed Down Speed SNR Margin Loop Att.
G.DMT SHOWTIME 448000 4032000 11 48


So, is my phone line getting noisy or is there something else amiss?

--
Chris Green