[AusNOG] Repeated NBN traffic flow issue

[Philip Loenneker]

Hi all,

A regular problem we have with our fibre and wireless NBN tails is that we get what appears to be one-way traffic. We see DHCP requests from the CPE (we use IPoE), we respond to them, but the CPE does not get the response. We have confirmed this on several occassions with packet captures at the NTD. I think we've had over 20 cases this year, and we appear to have gotten 4 cases in the past 24 hours. These are services that were working fine, and suddenly stopped. Lodging tickets with NBN is usually very drawn out, with the services ending up back online eventually, with responses that range from "we detected a problem and fixed it" to "everything checked out ok, no issues" but they mysteriously start working again. Naturally, we do things like isolation tests, port resets, change of CPE etc.

Has anyone else had any similar issues? Does anyone have any tips they can provide to help us expedite resolution to these issues? I'm sure it's no surprise to everyone on this list that the customers get angry at us for poor service, despite our part of the connection working correctly.

Regards,
Philip
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