[AusNOG] Juniper SRX300 on Aussie Broadband NBN HFC - DHCP Issue

[Tim Dykes]

I can confirm SRX is working fine on the above recommended versions on NBN.
Confirmed working on 19.4R3 without needing to do anything fancy.



Tim Dykes

M: 041 962 0603
E: ttdykes at gmail.com
W: ifconfig-a.com


On Fri, 15 Jan 2021 at 16:45, Tim Dykes <ttdykes at gmail.com> wrote:

> Updates after a day of research and discussion with JTAC....
>
> JTAC say there were known issues with how jdhcpd handled client-identifier
> and that caused these issues. That was fixed in junos:19.2R3 junos:19.3R3
> junos:19.4R3 junos:20.1R2 junos:20.2R2 junos:20.3R1
>
> There were reports that the order that the DHCP options were listed was
> causing problems. Packet captures from our SRX seem to rule that out, they
> look fine.
>
> Another forum says the SRX has a 255 end of option.. option, and that
> causes the problem but all vendors I have checked today also sent that...
> so dont think thats it.
>
>  I've received two reports of it working for people without any issues,
> and 2 reports of it having issues. The firmware versions that it works fine
> on are both different and one of them is even 15X.
>
> I can't find any PR's to match what I am seeing so I can only assume they
> are private.
>
> PPPOE seems to be fine across the board on HFC.
>
> Putting down as many notes here as possible so next time someone is trying
> to get a link up like this there is some reference material to go off.
>
> I have to wait until late next week for the end client to update their SRX
> to a newer code base inline with what JTAC say so until then I can't put
> this issue to bed.
>
> Tim Dykes
>
> On Thu, 14 Jan 2021 at 14:40, Simon Dixon <simon at dicko.net.au> wrote:
>
>>
>> Guessing your RE traffic CoS bits are set to default try setting them to
>> BE with the following config
>>
>> set class-of-service host-outbound-traffic ieee-802.1 default be
>>
>> Regards
>>
>> Simon.
>>
>>
>> On Thu, 14 Jan 2021 at 11:17, Tim Dykes <ttdykes at gmail.com> wrote:
>>
>>> Hey Guys,
>>>
>>> Anyone out there running a Juniper SRX on a NBN HFC link with Aussie BB?
>>>
>>> I'm having issues that sound like a DHCP problem where we can't get an
>>> address. Searching around we have found references to a DHCP issue where
>>> the juniper sends DHCP options out of order (or that NBN fiddles with
>>> options in a way that only effects Juniper) but cannot find any definitive
>>> answer or anything saying this was true/false fixed or unrelated.
>>>
>>> We are running JunOS 19X so would assume any horrible non compliant DHCP
>>> bugs would be fixed.
>>>
>>>
>>> Anyone able to throw me a working config or verify that there is/was a
>>> known issue with this.
>>>
>>> Thanks.
>>>
>>> /Tim
>>> _______________________________________________
>>> AusNOG mailing list
>>> AusNOG at lists.ausnog.net
>>> http://lists.ausnog.net/mailman/listinfo/ausnog
>>>
>>
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