Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual page 153

8.
encapsulation frame-relay ietf
frame-relay class
frame-relay fragment
host1((config-subif)#ip address 42.42.42.41 255.255.255.0
Associate a map class with a subinterface.
host1(config-subif)#frame-relay class testmap
Use to specify Frame Relay as the encapsulation method for the interface.
The router uses IETF format (RFC 2427 encapsulation).
Example
host1(config-if)#encapsulation frame-relay ietf
Use the no version to remove Frame Relay configuration from an interface.
See encapsulation frame-relay ietf.
Use to associate a map class with a subinterface.
Example
host1(config-subif)#frame-relay class testmap
Use the no version to remove the association between the subinterface and the
specified map class from the subinterface.
See frame-relay class.
Use to configure fragmentation and reassembly for the map class.
Specify the keyword fragmentation-only to specify only fragmentation, so that
reassembly is not performed.
Specify the keyword reassembly-only to specify only reassembly, so that
fragmentation is not performed.
Specify the maximum payload size of a fragment by using a value from 16–8188
bytes. If a value is not specified, the default value of 52 bytes is used.
Make sure the value for the maximum payload size of a fragment is less than or
equal to the MTU size, otherwise fragmentation never occurs.
Make sure the maximum payload size is larger than any voice packet so that
voice frames are not fragmented.
Examples
host1(config-map-class)#frame-relay fragment 100
host1(config-map-class)#frame-relay fragment fragmentation-only
Use the no version to stop fragmentation and reassembly on the subinterface.
See frame-relay fragment.
Chapter 2: Configuring Frame Relay
End-to-End Fragmentation and Reassembly
121