Configuring the Media MTU on SONET/SDH Interfaces
The default media MTU size used on a physical interface depends on the encapsulation being used on that interface. For a listing of MTU sizes for each encapsulation type, see Configuring the Media MTU.
To configure the media-MTU size:
- In configuration mode, go to the [edit interfaces interface-name] hierarchy level.[edit ]user@host# [edit interfaces interface-name]
- Include the mtu statement.[edit interfaces interface-name]mtu bytes;
If you change the size of the media MTU, you must ensure that the size is equal to or greater than the sum of the protocol MTU and the encapsulation overhead. You configure the protocol MTU by including the mtu statement at the following hierarchy levels:
[edit interfaces interface-name unit logical-unit-number family family]
[edit logical-systems logical-system-name interfaces interface-name unit logical-unit-number family family]