recommended Online-Detection-Interval?
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Hi,
is there any practical experience on this setting?
Can I go as low as 1 second? Will there be any caveat?
Where is the tradeoff, longer times obviously means its taking longer to recover from an outage. But whats the tradeoff for shorter periods?
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Ok I think 5 seconds is a really good way to go.
My WAN1 ISP had a lod of packet drops yesterday evening (every 2min a few packets where lost) and at some point the line was offline.
The packet loss was no problem at all, but when the line was finally offline, the switch-over was really smooth.
So no need to set it higher than 5secs, as the packet-loss was already very heavy. Im thinking about setting it to a lower value, so that even with a faulty line I will switch over to the "better" ISP. Maybe I will try as low as 2 sec when this will happen more often, but not for now.
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I think it is better not to change the detection interval too short, for example, you said 1 second.
If the online detection interval is adjusted too short, a little bit network fluctuations will cause the switch so that the Internet experience may be not good.
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thats the reason Im asking for field-tested experience :)
1 second might be too short, but 1 minute is certainly way too long. that will interrupt every active connection and therefore produce a big impact depending on the running applications.
BGP-routers for example do this on an 3 second - 15 second interval. But some of them are also going down to as fast a 250 milliseconds.
Currently I have set 5 seconds as interval and so far no issues (since yesterday). So lets see how its goes.
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Ok I think 5 seconds is a really good way to go.
My WAN1 ISP had a lod of packet drops yesterday evening (every 2min a few packets where lost) and at some point the line was offline.
The packet loss was no problem at all, but when the line was finally offline, the switch-over was really smooth.
So no need to set it higher than 5secs, as the packet-loss was already very heavy. Im thinking about setting it to a lower value, so that even with a faulty line I will switch over to the "better" ISP. Maybe I will try as low as 2 sec when this will happen more often, but not for now.
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