7705 SAR Interfaces
370
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
 
Parameters line — places the associated Ethernet port, ring Ethernet port, or GPON port into line 
loopback mode; not supported on DSL ports
internal — places the associated Ethernet, DSL, or GPON access port into internal 
loopback mode; not supported on ring Ethernet ports
persistent — places the associated Ethernet access port or ring Ethernet port into 
persistent loopback mode; not supported on DSL ports or GPON ports 
swap-src-dst-mac — swaps source and destination MAC addresses for Ethernet line 
loopbacks; not supported on ring Ethernet ports, DSL ports, or GPON ports 
timer — the timer set for Ethernet, DSL, or GPON loopbacks, in seconds
Values 0 | 30 to 86400
mac
Syntax mac ieee-address
no mac
Context config>port>ethernet
config>port>dsl
config>port>gpon
Description This command assigns a specific MAC address to an Ethernet port, ring Ethernet port, v-port, 
DSL port, or GPON port. 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
Parameters ieee-address — specifies the 48-bit MAC address in the form aa:bb:cc:dd:ee:ff or 
aa-bb-cc-dd-ee-ff where aa, bb, cc, dd, ee, and ff are hexadecimal numbers. Allowed 
values are any non-broadcast, non-multicast MAC, and non-IEEE reserved MAC 
addresses.
mode
Syntax mode {access | network | hybrid}
no mode
Context config>port>ethernet
config>port>dsl
config>port>gpon
Description This command configures an Ethernet port, DSL port, or GPON port for access, network, or 
hybrid mode operation, or configures a ring Ethernet port or v-port for network mode. On ring 
Ethernet ports and the v-port, the mode is always network and cannot be changed.