MTU parameters can be modified on the port level and at the service level.
The port-level MTU parameters configure the maximum payload MTU size for an Ethernet port that is part of a multi-link bundle or LAG.
The service-level MTU parameters configure the service payload (Maximum Transmission Unit – MTU) in bytes for the service ID overriding the service-type default MTU.
The default MTU values should be modified to ensure that packets are not dropped because of frame size limitations.
The service MTU must be less than or equal to both the access SAP port MTU and the access-uplink port MTU values. If the service from the 7210 SAS-K 2F1C2T is transported over an SDP in the IP/MPLS network (the SDP is not originating or terminating on the node), the operational path MTU can be less than the service MTU. In this case, user may need to modify the MTU value accordingly.