Loopback address

Contains the sender address (IPv4 or IPv6) that the device uses when connecting to the BGP neighbor.

This loopback address is configured under Setup > Routing-Protocols > BGP > Neighbors.

Note: If no loopback address is configured, this field contains the sender address.
SNMP ID:
1.93.1.1.3 
Telnet path:
Status > Routing-Protocols > BGP > Neighbors