Command Reference Guide

132 ● encapsulation 3Com Router 5000 Family and Router 6000 Family
Command Reference
encapsulation
Purpose Use the encapsulation command to specify ATM AAL5 encapsulation type for
PVC.
Use the undo encapsulation command to restore the default encapsulation.
Syntax encapsulation aal5-encap
undo encapsulation
Parameters aal5-encap
AAL5 encapsulation type, its possible values are as
follows:
■ aal5snap
LLC/SNAP (Logical Link Control / Subnet Access
Protocol) encapsulation type
■ aal5mux
MUX encapsulation type
■ aal5nlpid
RFC1490 encapsulation type
Default By default, aal5snap encapsulation is adopted.
Example The two examples can both specify AAL5 encapsulation type of PVC as
aal5snap.
Display how to specify AAL5 encapsulation type of PVC 1/32 as aal5snap.
[3Com-atm-pvc-Atm1/0/0-1/32] encapsulation aal5snap
Display how to specify AAL5 encapsulation type of PVC 1/33 as aal5snap.
[3Com-atm-pvc-Atm1/0/0-1/33] undo encapsulation
View This command can be used in the following views:
■ PVC view
Description An ATM PVC may carry multiple protocols at the same time, but some types of
encapsulations may not support some applications (one or more of IPoA, IPoEoA,
PPPoA and PPPoEoA). When such cases occur, the system gives a prompt.
The following table gives the relationship between ATM PVC encapsulation and
carried protocol.