Under normal operation, all non-failing links in a LAG become active and traffic is load balanced across all active links. In some circumstances, however, this is not wanted. Instead, it may be needed that only some of the links are active (for example, all links on the same IOM) and the other links be kept in stand-by condition.
LACP enhancements allow active LAG-member selection based on particular constrains. The mechanism is based on the IEEE 802.1ax standard so interoperability is ensured.
To use LACP on a LAG, operator must enable LACP on the LAG including, if wanted, selecting non-default LACP mode: active/passive and configuring administrative key to be used (config>lag lacp). In addition, an operator can configure a needed LACP transmit interval (config>lag lacp-xmit-interval).
When LACP is enabled, an operator can see LACP changes through traps and log messages logged against the LAG. See the TIMETRA-LAG-MIB.mib for more details.