[AusNOG] NBN Traffic Classes

[Chris Gibbs]

I know traffic is dropped going into AVC TC-1 that isn't marked as EF.
Maybe similar for TC-1 CVC. Can't seem to recall and never played with TC-1
1 live.

I would also imagine TC-1 is mapped to a priority queue of some kind. It
would be in the docs regardless.

Personally I would expect the congestion point to be the CVC in a FTTH /
FTTB network. Not so sure on the FTTN yet.



On 7 March 2016 at 13:12, Aftab Siddiqui <aftab at eintellegonetworks.com>
wrote:

> Hi All,
>
> Just trying to understand something about NBN Traffic Classes.
>
> As per NBN Product Tech Spec document:
>
> "TC-4 is implemented as CIR at the CVC, meaning that CVC TC-4 capacity
> cannot be shared with other CVCs or traffic classes across the NNI."
> Which make sense, but then why you need TC-1 and TC-2 for a CVC? Is there
> any use case for that? Probably voice but then what is the impact of using
> a TC-1 AVC over TC-4 CVC? IMO the current congestion point is last mile
> only or its a wrong assumption?
>
> Anyone would like to share (offlist) if they are using any traffic class
> other then TC-4 (or generally unmarked) for CVC.
>
> Best Wishes,
>
> *Aftab Siddiqui*
>
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