Cross-domain stitchers

Cross-domain stitchers look for links between devices in different domains and create connections between them in the topology.

The following table describes the stitchers currently included with Network Manager that are used for cross-domain discovery.

Note: This list is subject to change.

Table 1. Cross-domain stitchers
Stitcher	Function
AggregationDomainCollectionOfCollections	Creates collections of collection entities in the aggregation domain.
AggregationDomainCollections	Creates collection entities in the aggregation domain.
AggregationDomainCopyEntity	Creates the entity in the aggregation domain based on the entity in the source domain.
AggregationDomainCreate	Creates an aggregation domain.
AggregationDomainFindEntity	Finds entities within the aggregation domain.
AggregationDomainMain	Updates the aggregation domain after a discovery has finished. Calls the other aggregation domain stitchers.
AggregationDomain	Checks that the ncp_disco process is not in the Processing phase and then calls the AggregationDomainMain stitcher.
AggregationDomainUpdateChangeTime	Updates the timestamp for collection entities.
AggregationDomainUpdateRequired	Check the timestamps for collection entities to determine if an update is required.
LinkDomains	Controls the linking of domains. You can edit this stitcher to configure how domains are linked.
LinkDomainsActOnInstructions	Processes any instructions held in the linkDomains.instruction table and creates connections via the LinkDomainsCreateConnection stitcher.
LinkDomainsAddInstruction	Other stitchers supply instructions to add cross-domain connections to this stitcher. This stitcher adds the connections to the linkDomains.instructions table, after checking that each connection is not already in the table.
LinkDomainsCheckDNCIMForEntityName	Checks that a specified entityName exists in DNCIM.
LinkDomainsCheckDNCIMValidEntityType	Checks that the specified entityType is valid, and, optionally, that the entityType is of the specified metaclass.
LinkDomainsCreateConnection	Adds the connection to DNCIM.
LinkDomainsCreateEntity	Creates the entity in DNCIM based on the entity in NCIM
LinkDomainsDatabaseSetup	Creates the databases used by the domain linking stitchers.
LinkDomainsGetEntityIdFromDNCIMByEntityNameAndDomainId	Checks whether the specified entity is in DNCIM by EntityName and domainId.
LinkDomainsGetEntityIdFromNCIMByEntityNameAndDomainName	Checks whether the specified entity is in NCIM by EntityName and domainName.
LinkDomainsGetNumConnectsForEntityName	Retrieves the number of related network elements for an entity.
LinkDomainsLoadInterfaceDescriptionMatches	You can configure cross-domain stitching so that devices are linked to each other based on the interface ifAlias field. You can edit this stitcher to define the interface description matches.
LinkDomainsLoadPresetConnections	You can edit this stitcher to define connections between specific devices.
LinkDomainsPopulateDomainAdjacencies	Populates the domainAdjacencies NCIM database table with the information about the domains that are considered to be adjacent. Adjacent domains are expected to have Layer 2 links between them.
LinkDomainsPreProcessInterfaceMatches	Processes devices with matching interface descriptions.
LinkDomainsProcessConnectivityMatrix	Processes devices with matching interface descriptions.
LinkDomainsProcessPresetConnections	Processes devices with preset connections.
LinkDomainsResolveInterfaceToLowestPortDNCIM	Finds the lowest port or interface for a given DNCIM interface entityName.
LinkDomainsResolveInterfaceToLowestPortNCIM	Finds the lowest port or interface for a given NCIM interface entityName.
LinkDomainsViaLAGLayer	Creates connections between domains based on LAG data from collector discovery. LAG connections between domains are not supported for data from SNMP discovery.
LinkDomainsViaLayer1NameInterface	Creates connections between domains based on layer 1 connectivity.
LinkDomainsViaLLDP	Creates connections between domains based on LLDP data.
LinkDomainsViaPseudoWires	Creates connections between domains based on pseudowire connectivity.
LinkDomainsViaSlash30Subnet	Creates connections between domains based on /30 subnet connectivity.
LinkDomainsViaSlash31Subnet	Creates connections between domains based on /31 subnet connectivity.
LinkDomainsViaBGPSessions	Creates connections between domains based on BGP sessions.
LinkDomainsViaCDP	Creates connections between domains based on CDP data.
LinkDomainsViaISIS	Identifies and populates cross-domain links using ISIS information if it is present. This stitcher is disabled by default. If domainAdjacencies is populated then the stitcher creates links only across specified domains, otherwise it will attempt to link across all domains.
LinkDomainsViaMPLSTE	Creates connections between domains based on MPLS TE data.
LinkDomainsViaOSPF	Creates connections between domains based on OSPF data.
LinkDomainsViaOSPFAssist	Switched on if LinkViaOSPF is enabled.
LinkDomainsViaPIM	Creates connections between domains based on PIM data.
LinkDomainsViaUnresolvedFDBPorts	Creates connections between domains based on unresolved Forwarding Database (FDB) ports identified by the switch discovery agents.