Data Center (MLX & CER/CES)

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GRE TCP MSS Adjustment on MLX

  • 1.  GRE TCP MSS Adjustment on MLX

    Posted 10-10-2018 11:42
    Hello all. How can i adjust tcp mss on gre tunnel with MLX?
    In documentation states:
    Modifying the TCP MSS value based on the GRE tunnel MTU configuration

    For example, on ethernet interface 1/1 the TCP MSS value is configured to 1400 bytes. The ethernet interface 1/1 is a tunnel source for the GRE tunnel 100. If you configure the GRE tunnel MTU value to 700 bytes on ethernet interface 1/1, the software internally modifies the TCP MSS value to 660 bytes.

    So as i understand if i need mss 1360 i should just adjust mtu on a gre interface to 1400 and mss will be changed too.

    interface tunnel 1
    tunnel mtu 1400

    Am i right?
    Thanks in advance.

  • 2.  RE: GRE TCP MSS Adjustment on MLX

    Posted 11-27-2018 00:32
    Yes,hope it worked..