Alcatel-Lucent 7750 SR OS Interface Configuration Manual page 433

Description
This command adds a text description for the eth-tunnel.
The no form of this command removes the text description.
Default "Eth-tunnel"
Parameters
string — Specifies the text description up to 160 characters in length.
ethernet
Syntax ethernet
Context config>eth-tunnel
Description
This command is the node where Ethernet parameters can be configured.
encap-type
Syntax encap-type {dot1q|qinq}
no encap-type
Context config>eth-tunnel>ethernet
Description
This command configures the encapsulation method.
Parameters
dot1q — Specifies dot1q encapsulation.
qinq — Specifies qinq encapsulation.
mac
Syntax [no] mac ieee-address
Context config>eth-tunnel>ethernet
Description This command assigns a specific MAC address to an Ethernet port, Link Aggregation Group (LAG),
Ethernet tunnel or BCP-enabled port or sub-port. Only one MAC address can be assigned to a port.
When multiple mac commands are entered, the last command overwrites the previous command.
When the command is issued while the port is operational, IP will issue an ARP, if appropriate, and
BPDUs are sent with the new MAC address.
The no form of this command returns the MAC address to the default value.
Default A default MAC address is assigned by the system from the chassis MAC address pool.
7750 SR OS Interface Configuration Guide
Interface Configuration
Page 433