Topology references overview

Introduction to topology references

A reference determines the operational state of the real network, specifically for subnets and links.

The CPAM automatically sets a reference on all of the topology objects when an object is created or after a software upgrade. If topology objects exist from previous software versions, the topology objects are automatically referenced.

References on the topology maps

A topology reference is used to determine and track the existence of an object. Topology maps on the GUI are highlighted with colors to indicate the status of a link.

The following colors identify the links on the IGP and MPLS topology maps:

The following color conventions are used on OSPF topology maps:

The following color conventions are used on ISIS topology maps:

The NFM-P database continues to store information for the reference link after it has been removed from the LSDB. Although the link is displayed in red, the original color of the link reappears after the link is rediscovered by the CPAA. The state of the router is not indicated by a color.

Topology reference functions

The following table describes the CPAM reference functions:

Table 6-1: CPAM reference functions

Function

Description

Cleanup Reference→All ISIS Domains

References are maintained for all of the links, routers, and areas that are operationally up within ISIS routing domains in an IGP administrative domain. All operationally down objects are removed from the topology map.

Cleanup Reference→All OSPF Areas

References are maintained for all of the links, routers, and areas that are operationally up within OSPF areas in an IGP administrative domain. All operationally down objects are removed from the topology map.

Cleanup Reference→All

References are maintained for all of the links, routers, and areas that are operationally up in all of the ISIS routing domains and OSPF areas in an IGP administrative domain. All operationally down objects are removed from the topology map.

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