Enigma Port Monitor feature allows monitoring of interface status in all your management domain.
It may seem trivial but with tens of thousand of interfaces in your network nodes, it is very hard to determine which interfaces need to be monitored.
Most switched interfaces are access ports, which go Up and Down on regular basis as users connect or disconnect their PCs, while others are routed links with configured IP Addresses or layer 2 trunks (connections between network nodes). It is good practice to have routed links and layer 2 trunks monitored.
Most likely you are running some version of STP (Spanning Tree Protocol) in your switched environment, which maintains loop-free physical topology. E.g. if you have 2 physical connections between two switches only one will be forwarding packets, while another will be placed into blocking mode.
When primary connection fails the STP will change backup link from “Blocking” state to “Forwarding”. This will restore connectivity to affected network segment.
This event is called network convergence. Standard STP topology recalculation takes about 45-50 seconds to complete, which would cause short interruption to all nodes within affected part of the network.
Cisco has introduced enhanced version of STP, called RSTP (Rapid Spanning Tree Protocol), which reduces topology conversion time to 1 second. While this is great for network availability, it represents quite a challenge to network support staff. Unless primary connection was explicitly monitored, its failure may go unnoticed, because backup connection was activated nearly immediately and everything stayed green on your management map.
If later on, your backup connection also fails, you would be left with no more physical backup, and part of your network will become disconnected from your network core, affecting possibly any people with potentially disastrous consequences.
Enigma NMS proactively detects switched and routed trunks and turns on monitoring of these interfaces.
It will notify your support staff of any issues so remedial actions can be taken.
Monitoring of access ports can be turned on manually.