IP Availability Manager
discovery
IP Availability Manager
discoveryIn 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 requestsThe CLI device-access objects exported to theMPLS Topology Servercarry CLI login credential information. The CLI login credentials are required by theMPLS Topology Serverfor two purposes:
- To perform CLI discovery
- To execute on-demand label switched path (LSP) ping requestsThe provides information about creating CLI device-access objects.