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LTE : PGW application or any other layer in the protocol stack of PGW does the DSCP marking ?

+3 votes
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Is there any way to implement fast path for the data passing through PGW ?

posted Dec 30, 2015 by Harshita

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2 Answers

+1 vote

Dscp making is performed in ip header so in pgw it should be done at ip layer when ip header is added to gtp pkt.

answer Jan 1, 2016 by Veer Pal Singh Yadav
Hello Veer, I am still not clear what you mentioned here.
If I understood correctly, it is the job of application layer which takes care of IP DSCP marking based on the bearer on which IP packet  receives.
commented Jan 1, 2016 by Harshita
0 votes

Network layer should take care of dscp marking.

answer Jan 2, 2016 by Veer Pal Singh Yadav
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+1 vote
Why DSCP marking is required for IP packets at PGW ?

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+5 votes
What if PGW is not doing the DSCP marking correclty , what is the solution you will suggest ?

HI All,

I was asked this question in an interview sometime back. So I do not have more details like what is the environment or what services running. You can just make your own assumption and give me a suggestive answer.

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