Draytek VigorAccess User's Installation Manual page 53

3.6 Miscellaneous
IP DSLAM supports some other important features as below.
Load-sharing Redundancy
These two Ethernet uplinks of IP DSLAM can be used as a single load-shared uplink
for data and management path, with a provision to fall back to single one, in the event
one of the links failed.
Active Standby Redundancy
These two Ethernet uplinks of IP DSLAM can be used in an active stand by mode for
data and management path, with a provision to fall back to standby link, in the event
of the active links failure.
Redundancy
Redundancy function is also supported in BOOTP/TFTP whereby it shall try to
fallback to redundant Ethernet interface if it detects a problem with the existing
interface if the download fails.
Configuration
Modification of Ethernet IP address, mask, speed, and duplex mode is supported.
Support for safe mode boot where the TE Image can be downloaded for field
upgrade.
VigorAccess User Installation Guide
53