[j-nsp] Packet mode "mpls" (was Layer 2 feature on srx)

[Pavel Lunin]

Phil Mayers wrote:

On 04/10/2012 06:17 AM, Doug Hanks wrote:
>
>> In the context of packet-mode, the family mpls is analogous to inet.  This
>> is correct.
>>
>>
> Not sure I understand this.
>
> "analogous" implies what, here? That enabling packet-mode for MPLS
> implicitly enables it for IPv4?
>

Yep. Same for ISO.


>
> If that's the case, why is there also a "family inet" option?
>

Looks like first they meant to have different options for different
families allowing to simultaneously have some in flow and some in packet
mode. But it's already about… 4 years passed, I think, and it's still this
way. Any family turned into packet mode turns the whole box. Sort of the
same stuff as 'say per-packet mean per-flow' LB.

There might be a difference for inet6 (I am not sure) since some version,
in which the stateful processing for IPv6 was added. I just remember I
needed to explicitly set the packet mode for it playing around something
implied IPv6, otherwise it didn't work (or rather worked in flow-mode but I
had no zones/policies). Must repeat, I'm not sure.