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PPPoE WAN connection disconnecting under high upload load

jamesharper

I have spent considerable time tracking down a problem where the PPPoE WAN connection disconnects. I have found that under high upload load, LCP ECHO requests (or responses to ISP ECHO requests) are getting dropped causing the PPPoE connection to disconnect and reconnect.

The ISP says that this is the expected behavior if the CPE (Sophos XG in this case) does not shape uploads to slightly less than maximum. Otherwise the VDSL modem makes the decision about what to drop, and will not respect any traffic priority requirements.

We can fake this with a few shaping rules, but this is really not ideal.

When will XG get proper shaping?

And in the meantime, is there a way for me to insert my own tc rules to implement this at the WAN interface level?

Thanks

James



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    Hi James,

    seems a strange answer, what speed is your link?

    The only way to apply QOS would be on the internal network because at this stage my understanding of this version of XG is it only works with symmetrical networks.

    Ian

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    Hi James,

    seems a strange answer, what speed is your link?

    The only way to apply QOS would be on the internal network because at this stage my understanding of this version of XG is it only works with symmetrical networks.

    Ian

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