[AusNOG] NBN NWAS and Cisco PPPoE

Fri Jan 12 14:59:25 EST 2018

This sounds like a different issue we have seen in the past with different CPE vendors where they were sending   LCP packets with a class of service other than best efforts (0) - while this worked with some PPoE sessions, it failed on others with AAPT.   Configuring the CPE to send only LCP with best efforts overcame that particular issue.

Not sure if this is related - but given when you try with other equipment it works straight away - it sounded familiar.

Glenn Lake

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From: AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of Nathan Brookfield <Nathan.Brookfield at simtronic.com.au>
Sent: Friday, 12 January 2018 2:43:18 PM
To: Liam Best; ausnog at lists.ausnog.net
Subject: Re: [AusNOG] NBN NWAS and Cisco PPPoE

Hi Liam,

I believe this is the result of a software upgrade on NBN NWAS towers last week and this is a known issue, NBN are working with Cisco and the wireless vendors but this was something that has occurred and is wide spread for all Cisco NWAS users.

Kindest Regards,

Nathan Brookfield (VK2NAB)

Chief Executive Officer

Simtronic Technologies Pty Ltd

Local: (02) 4749 4949 | Fax: (02) 4749 4950 | Direct: (02) 4749 4951

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From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Liam Best
Sent: Friday, January 12, 2018 2:38 PM
To: ausnog at lists.ausnog.net
Subject: [AusNOG] NBN NWAS and Cisco PPPoE

Reaching out to see if anyone can shed some light on an issue we are encountering with NBN NWAS and Cisco routers.

We have two clients on NBN NWAS services, both using Cisco 1941 routers, both on opposite ends of Melbourne.

The carrier is AAPT for both services.

Just over a month ago, both services stopped working with our config, however the service works with a Juniper SSG5 - also works with a Windows laptop directly connected to the NTU (and even an old D-LINK).

We have also tried a Cisco 800 series router, but same issue occurs.

>From the Cisco log:

000124: *Jan 11 09:31:29.323:  Sending PADI: Interface = GigabitEthernet0/0

000125: *Jan 11 09:31:29.619: PPPoE 0: I PADO  R:f8c2.8864.e230 L:1cdf.0ff7.c640 Gi0/0

000126: *Jan 11 09:31:31.627:  PPPOE: we've got our pado and the pado timer went off

000127: *Jan 11 09:31:31.627: OUT PADR from PPPoE Session

000128: *Jan 11 09:31:31.659: PPPoE 0: I PADS  R:f8c2.8864.e230 L:1cdf.0ff7.c640 Gi0/0

000129: *Jan 11 09:31:31.659: IN PADS from PPPoE Session

000130: *Jan 11 09:31:31.659:  PPPoE : Shutting down client session

000131: *Jan 11 09:31:31.659:  PPPoE : Failed to notify platform about session shutdown, no vaccess swidb

000132: *Jan 11 09:31:31.659: [0]PPPoE 0:

router#O PADT  R:0000.0000.0000 L:0000.0000.0000 Gi0/0

All other NBN services work with this config, it just seems to be the combination of our Cisco config and NWAS.

These services were working with this hardware and same config for around 3-4 months after the service was activated.

If anyone has a working sample config for Cisco routers on NBN NWAS, or any ideas to what might cause this, it would be much appreciated.

Liam Best

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Centorrino Technologies Pty Ltd | 11/9 Dawson Street Coburg VIC 3058 Australia

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