Virtual Private LAN Services
Page 754 7750 SR OS Services Guide
encap-type
Syntax encap-type {dot1q | null}
no encap-type
Context config>service>egress-multicast-group>sap-common-requirements
Description This command specifies the encapsulation type that must exist on the SAP’s access port to allow the
SAP membership within the egress-multicast-group. The config>port>ethernet>access>encap-type
command is used to define the encapsulation type for the Ethernet port. The allowed encapsulation
type values are dot1q and null. If the SAP does not exist on a port with the specified encap-type, it
will not be allowed into the egress-multicast-group.
If at least one SAP is currently a member of the efficient-multicast-group, the encap-type cannot be
changed within the sap-common-requirements node. If the efficient-multicast-group does not contain
any member SAPs, the encap-type may be changed at any time.
There is no interaction between an efficient-multicast-group and the corresponding access ports
associated with its members since all SAPs must be deleted from a port before its encap-type can be
changed. When the SAPs are deleted from the port, they are also automatically deleted from the
efficient-multicast-group.
The no form of the command returns the egress-multicast-group required encapsulation type for
SAPs to dot1q. If the current encap-type is set to null, the command cannot be executed when SAPs
exist within the egress-multicast-group.
Default dot1q — For an egress-multicast-group.
null — If member SAPs are on a null encapsulated access port.
Parameters null — The null keyword is mutually exclusive with the dot1q keyword. When the encap-type
within the sap-common-requirements is specified to be null, the encapsulation type for the access
ports associated with all SAPs within the egress-multicast-group must be set to null.
dot1q — The dot1q keyword is mutually exclusive with the null keyword. When the encap-type
within the sap-common-requirements is specified to be dot1q, the encapsulation type for the
access ports associated with all SAPs within the egress-multicast-group must be set to dot1q.
qinq-etype
Syntax qinq-etype [0x0600..0xffff]
no qinq-etype
Context config>service>egress-multicast-group>sap-common-requirements
Description This command specifies the Ethertype used for QinQ encapsulation.
Default no qinq-etype
ethertype — Defines the dot1q EtherType that must be associated with a SAP’s access port when the
encap-type is set to dot1q. Any valid EtherType may be specified.
Values [0x0600 — 0xffff]: [1536 — 65535] in decimal or hex
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