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DF bit set in inner packet and GRE imposed header

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  • 1.  DF bit set in inner packet and GRE imposed header

    Posted 09-21-2017 17:30

    Hi everyone,

     

    I am trying to find some docs  to find if SRX copies DF bit from inner packet  into GRE header when doing GRE tunneling.

    Also if TTL value of inner packet is copied into GRE header by default.

     

    In Cisco, DF bit and ttl  are not copied into GRE header, just wondering if SRX same way.

     

     



  • 2.  RE: DF bit set in inner packet and GRE imposed header
    Best Answer

    Posted 09-22-2017 00:19

    Hi,

     

    In my opinion Juniper behavior will also be same here as Cisco. We should not copy the DF bit and TTL value from the inner packet to the GRE header. However I could not find any document listing that.

     

    Hope this helps

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    Thanks