IP Availability Manager
discovery

In the physical-transport domain,
IP Availability Manager
discovers Layer 2 (data-link) and Layer 3 (network) connectivity in multivendor, switched, and routed networks. It discovers the network systems by sending them Internet Control Message Protocol (ICMP) and SNMP polls.
In an MPLS network, as shown in Physical-transport domain discovered by IP Availability Manager,
IP Availability Manager
discovers the Layer 2 and Layer 3 network object connectivity between PE, P, and CE devices.
Physical-transport domain discovered by
IP Availability Manager
IP Availability Manager
uses the discovered topology to model the network, and uses SNMP polling and traps to diagnose and pinpoint the root cause of network failures. It exports the analysis results along with topology information to the
Global Manager
.
IP Availability Manager
also exports MPLS-relevant topology and CLI device-access objects to the
MPLS Topology Server
, and exports MPLS-relevant status updates to the
MPLS Monitoring Server
.
The topology exported to the
MPLS Topology Server
includes SNMPAgent objects, which carry SNMPv1, v2c, or v3 credential information. The SNMP credentials are required by the
MPLS Topology Server
for two purposes:
  • To perform SNMP discovery
  • To execute on-demand remote ping requests
    The CLI device-access objects exported to the
    MPLS Topology Server
    carry CLI login credential information. The CLI login credentials are required by the
    MPLS Topology Server
    for two purposes:
  • To perform CLI discovery
  • To execute on-demand label switched path (LSP) ping requests
    The
    provides information about creating CLI device-access objects.