Highlight can discover switch interfaces bonded using LACP or PAgP, and also bonded WAN interfaces built using PPP, but only if the link being monitored is the logical port which comprises multiple physical links.
Once enabled, Highlight will display and start monitoring any multilinks or bonded ports associated with the monitored interface within 30 minutes.
Discovering switch port bonding
If you are linking multiple switch ports into a single virtual channel then Highlight can autodiscover the individual ports (members) by selecting the option ‘Multilink interfaces’ in the Features tab, Autodiscovery section. Once discovered Highlight will start monitoring them individually and can alert if any port members go down. Autodiscovery will only work for negotiated channels which use either Link Aggregation Control Protocol (LACP) or Port Aggregation Protocol (PAgP).
Other terms used to describe the link aggregation method include port bonding, port trunking, link bundling, Ethernet bonding, network bonding, NIC bonding, or NIC teaming.
Discovering WAN multilinks
If the monitored bearer in Highlight is built using Cisco Multilink Point-to-Point Protocol (PPP) technology then Highlight can discover the physical links bonded by it by using the option ‘Multilink interfaces’ in the Features tab, Autodiscovery section. This is valuable for checking the traffic is balanced over the links and the links are reliable.
Multilink bandwidths allocated
The set bandwidth is based on the interface name of the discovered multilink as shown here: