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Setting an MSS Value for NAT64 Services
Setting an MSS Value for NAT64 Services
The maximum segment size (MSS) value defined in TCP specifies
the maximum length of a TCP packet to be sent without fragmentation.
Two devices exchange SYN packets to negotiate the MSS value for a
TCP connection to be established.
Context
If the size of packets for NAT64 processing is larger
than a link MTU, IPv6 packets are fragmented. You can reduce the MSS
value in TCP, which prevents a NAT64 board from fragmenting packets
and helps improve NAT64 efficiency.
Procedure
Run system-view
The system view is displayed.
Run nat64 instanceinstance-nameidid
The NAT64 instance view is displayed.
Run nat64
tcp adjust-mssmss-value
An MSS value is set in TCP SYN and SYN ACK packets.