Use the tunnel-mtu command to set the static MTU value. The tunnel-mtu command is accessible from the ap:<serial> context of the CLI.
| 600-1500 | Specifies the static MTU size in bytes. The default is 1500 bytes. Some controllers allow you to enable jumbo frames, in which case the range increases to 600-1800. |
The wireless software enforces the static MTU size if it cannot discover the MTU size. Set the MTU size to allow the source to reduce the packet size and avoid the need to fragment data packets in the tunnel.
The following command sets the MTU tunnel size to 1300 bytes:
EWC.extremenetworks.com:ap:0500008043050236# tunnel-mtu 1300
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