Initiates discovery

After importing the initial topology and CLI device-access objects from IP Availability Manager, the MPLS Topology Server uses SNMP polling and/or CLI commands to query the imported devices for MPLS and VPN topology information. If SNMP polling fails or is not supported by a device, the MPLS Topology Server logs in to the device (through Telnet, SSH1 or SSH2) and issues CLI commands to query the device for the required information.