[c-nsp] debug mpls packet

[roy]

Oliver Boehmer (oboehmer) wrote:
>>>> Does anyone know what the middle number represents in a "debug mpls
>>>> packet" ( eg: {7963 6 254} )?
>>>> I can't find this information anywhere.
>>>>
>>>> 7693 = Label
>>>> 6 = ???
>>>> 254 = I presume is the TTL
>>>>
>>>> What does the 6 represent??
>>> it's the EXP value. you're right about the last being the TTL.
>>>
>>> 	oli
>> Could it be the 3-bit EXP and 1-bit Bottom of Stack Flag combined?
> 
> Hmm, why do you think so? Looking at the code, it only prints the 3 exp.
> bits.

Cisco must have combined RFC3032 [2.1. Encoding the Label Stack] into 
one value.

Roy