Kitz Forum
Broadband Related => FTTC and FTTP Issues => Topic started by: spaace on January 22, 2020, 05:53:03 PM
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hi people, any info here would be great - understand probably nothing i can do about it but am interested how it happened
at the weekend my pings went up by about 5ms, nothing on the line changed in terms of DLM (i think). no disconnections for weeks, router still says it is on fast path (if interleaving i would expect a 8ms hike). so i thought maybe the routing from my village to my isp had changed, fair enough.
yesterday i was helping my neighbor with something and was on his wifi, tested his ping and it was how mine used to be, so i pinged the ip of my isp's first hop and he was pinging it again how mine used to be. How is it possible he can ping my ISP 5ms faster than me from another ISP and he is next door??
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Funnily enough, mine has gone up as of early this morning too, even weirder is its impacting both my lines from two different ISPs with completely different backhaul providers.
Usually its down to issues with too many customers on the same tunnel to the ISP. Forcing PPP to reconnect (not the DSL, just the connection to the ISP) can show this, as it might not fix it first time but usually if you keep doing it eventually you will hit on a less loaded path to the ISP.
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Funnily enough, mine has gone up as of early this morning too, even weirder is its impacting both my lines from two different ISPs with completely different backhaul providers.
Usually its down to issues with too many customers on the same tunnel to the ISP. Forcing PPP to reconnect (not the DSL, just the connection to the ISP) can show this, as it might not fix it first time but usually if you keep doing it eventually you will hit on a less loaded path to the ISP.
thanks, done a bunch of ppp reconnects and nothing :( it is odd that it is super stable and exactly 5ms more than before (13ms instead of 8ms)
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Can you post line stats
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Can you post line stats
pic attached, been up for about 6 hours. thanks
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how absolutely bizarre, i was just about to show a ping that was running to show how stable the 13ms was and suddenly.... (slight spikes are probably Netflix running downstairs)
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Sure it is related to the ISP may be maintenance or something, interleave would require dsl resync. and the router will show it is enabled so it is not enabled for sure. if you have neighbors with the same ISP check with them as your line is really fine.
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i'm on an isp called voicehost who we use for voip/fibre etc at work so get it free - seems really good. neighbours are on BT so thats why i thought it was strange they could ping a voicehost gateway lower than i could. thanks for taking the time to reply
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You are welcome, so it looks like it is related to the way from gateway to you rather than the gateway itself. Hope someone can provide more help.
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I wonder if it is nothing more than the fact that devices can ignore an ICMP echo request when they are busy.
Basically ping requests are trivia and are at the bottom of the list of task importance.
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That's why I prefer to ping Google DNS or pingbox1.thinkbroadband.com, as they seem more consistent. The latter I would suspect ping is prioritised as its what they run the TBB Latency Monitor from, though granted it doesn't guarantee it has the same priority when sending out pings itself, but at least the network up to that point will have ICMP as a priority.
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hi people, any info here would be great - understand probably nothing i can do about it but am interested how it happened
at the weekend my pings went up by about 5ms, nothing on the line changed in terms of DLM (i think). no disconnections for weeks, router still says it is on fast path (if interleaving i would expect a 8ms hike). so i thought maybe the routing from my village to my isp had changed, fair enough.
yesterday i was helping my neighbor with something and was on his wifi, tested his ping and it was how mine used to be, so i pinged the ip of my isp's first hop and he was pinging it again how mine used to be. How is it possible he can ping my ISP 5ms faster than me from another ISP and he is next door??
Fibre cut, line card failure or whatever triggered reroute on the BT Wholesale network carrying your traffic to your ISP's gateway. Neighbour's ping unaffected as not on the same ISP so different path across the BT Wholesale network.
You're welcome. :)
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makes sense, thanks :)