Discovery Access node
Each time an endpoint is discovered, a Discovery Access node is created. It has relationships to the retrieved discovery information. Discovery Access nodes are created even if discovery fails, so that failed access is clearly identified in the model.
The endpoint attribute of a Discovery Access node describes the target used for discovery. The target for discovery is currently an IP v4 or IP v6 address.
Info
Network Device nodes created using the pattern language, for example stacked switches and access points, do not have a related Discovery Access node.
Discovery Access Lifecycle
The following section describes the scenarios in which a Discovery Access is created or destroyed. DDD nodes are never updated.
Creation
A Discovery Access node is created when BMC Discovery scans an IP address and that IP address is not considered to be dark space. This is either:
- when there has never been a response on the IP address, or
- when there has been no response for long enough for a previously discovered device to age out, it is then considered to be dark space.
Removal
Aging parameters exist for Directly Discovered Data Nodes which have a particular cut-off time. The Aging process will remove any Discovery Access Nodes and all of the other DDD Nodes associated with that node if this default time period is exceeded.
However, if the Discovery Access Node is the only one for an endpoint, then it is not removed, unless it is considered dark space. This enables BMC Discovery to keep a permanent record of every endpoint that has ever been scanned. These Discovery Access Nodes are the only ones which can exceed the default cut-off Aging process.
The cut-off time is configurable, see DDD removal for more information.
Discovery Access node attributes
The attributes of a Discovery Access node are as described in the following table:
UI Name | Description |
|---|---|
Range Prefix | Distinguish overlapping address spaces. |
Endpoint | Accessed IP address. |
Not displayed in UI | Index of endpoint for owning range. |
Not displayed in UI | Reasoning machine that performed discovery. |
Not displayed in UI | ECA engine on Reasoning machine the performed discovery. |
State | State of access — completed, in progress, and so forth. |
Start Time | Date and time access started. |
End Time | Date and time access ended. |
Discovery Start Time | Date and time access started on a scanning appliance. |
Discovery End Time | Date and time access ended on a scanning appliance. |
Result | Result of access. |
End State | Final state of access. |
Reason | Reason for failure, if any. |
On Hold Since | True if access is on hold waiting for a scan window. |
On Hold Duration | How long the access was held waiting for a scan window. |
Not shown in UI | True if this is the first DiscoveryAccess for an endpoint. |
Not shown in UI | True if this is the last DiscoveryAccess for an endpoint. |
Dark Space | True if when this was the last DiscoveryAccess for an endpoint it was to be treated as dark space. |
Not shown in UI | True if this is the last DiscoveryAccess which accessed an endpoint. |
Session Establishment Duration | The amount of time taken to establish a session with the endpoint (in seconds). |
Total Discovery Duration | Total time in seconds spend in discovery including session establishment time. |
Not shown in UI | True if there are session failures linked to this DiscoveryAccess. |
Not shown in UI | The session type and credential used. |
Not shown in UI | List of the consolidation appliance identifiers this DA has been be sent to. |
Retrieved by scanning appliance | True if present, always have the value True and indicates that the data for this DiscoveryAccess originated from a scanning appliance before being consolidated on this one. |
No Response Count | The number of no response DAs suppressed onto a single no response DA. |
Last Response Time | The date of the last response DA. |
Discovered From Scanner File | True if this data came from a scanner file. |
Best IP Score | Best IP score used by endpoint optimisation. |
Scanned Indirectly | Method used to indirectly scan endpoint. |
Discovery Access node relationships
The relationships of a Discovery Access node are as described in the following table:
| Destination | Relationship | Description |
|---|---|---|
Host |
| Host inferred from this access. |
Management Controller |
| Management Controller inferred from this access. |
MFParts |
| MFPart inferred from this access. |
Network Device |
| NetworkDevice inferred from this access. |
Printer |
| Printer inferred from this access. |
SNMP Managed Device |
| SNMP Managed Device inferred from this access. |
Storage Device |
| Storage Device inferred from this access. |
Failed Host |
| Probable Host corresponding to a failed access. |
Failed Management Controller |
| Probable Management Controller corresponding to a failed access. |
Failed MF Part |
| Probable MFPart corresponding to a failed access. |
Failed Network Device |
| Probable NetworkDevice corresponding to a failed access. |
Failed Printer |
| Probable Printer corresponding to a failed access. |
Failed SNMP Managed Device |
| Probable SNMP Managed Device corresponding to a failed access. |
Failed Storage Device |
| Probable Storage Device corresponding to a failed access. |
Optimized Host |
| Host corresponding to an access that was optimized away. |
Optimized Management Controller |
| Management Controller corresponding to an access that was optimized away. |
Optimized MFPart |
| MFPart corresponding to an access that was optimized away. |
Optimized Network Device |
| NetworkDevice corresponding to an access that was optimized away. |
Optimized Printer |
| Printer corresponding to an access that was optimized away. |
Optimized SNMP Managed Device |
| SNMP Managed Device corresponding to an access that was optimized away. |
Optimized Storage Device |
| Storage Device corresponding to an access that was optimized away. |
Device Info |
| Device info. |
Directories |
| Directory Listing. |
API Call Results |
| API call results. |
API Call Result Lists |
| API call result lists. |
Mainframe Application Components |
| Mainframe Application Components. |
Network Device Cards |
| Network Device Cards. |
Network Device Chassis |
| Network Device Chassis. |
Command Results |
| Command results. |
Coupling Facilities |
| Coupling Facilities. |
Mainframe Database Properties |
| Mainframe Database Properties. |
Mainframe Databases |
| Mainframe Databases. |
Mainframe Software Dependencies |
| Mainframe Software Dependencies. |
Storage Disks |
| Storage Disks. |
Files |
| Files. |
IP Addresses |
| IP Addresses. |
MAC Addresses |
| MAC Addresses. |
Mainframes |
| Mainframes. |
Managed Devices |
| Managed Devices. |
Mainframe MFParts |
| Mainframe MFParts. |
Mainframe MQ Properties |
| Mainframe MQ Properties. |
Interface Details |
| Interface Details. |
Packages |
| Packages. |
Patches |
| Patches. |
Mainframe Programs |
| Mainframe Programs. |
Registry Queries |
| Registry Queries. |
SNMP Queries |
| SNMP Query. |
SNMP Table Queries |
| SNMP Table Query. |
Mainframe Software |
| Mainframe Software. |
Storage Subsystems |
| Storage Subsystems. |
Sysplexes |
| Sysplexes. |
Storage Tapes |
| Storage Tapes. |
Mainframe Transactions |
| Mainframe Transactions. |
WBEM Associators |
| WBEM Associators. |
WBEM Instances |
| WBEM Instances. |
WBEM Queries |
| WBEM Queries. |
WMI Queries |
| WMI Queries. |
File Systems |
| File systems. |
FQDNs |
| FQDNs. |
HBAs |
| HBAs. |
Host Info |
| Host info. |
Network Connections |
| Network Connections. |
Processes |
| Processes. |
Registry Keys |
| Registry Keys. |
Services |
| Services. |
Virtual Machines |
| Virtual Machines. |
Endpoint |
| Endpoint. |
Session Results |
| Session details. |
Errors |
| Errors detected by the ECA engine. |
Caused Implicit Scans |
| Implicitly scanned endpoints due to this access. |
Reason for Implicit Scan |
| Access which caused this endpoint to be implicitly scanned. |
Provider Accesses |
| Provider Accesses. |
Discovery Run |
| Discovery Run. |
Previous Discovery Access |
| Previous DiscoveryAccess. |
Next Discovery Access |
| Next DiscoveryAccess. |
Directories on Another Device |
| Directory Listing on another device. |
API Call Results on Another Device |
| API call results on another device. |
API Call Result Lists on Another Device |
| API call result lists on another device. |
Command Results on Another Device |
| Command results on another device. |
Files on Another Device |
| Files on another device. |
Registry Queries on Another Device |
| Registry Queries on anoher device. |
SNMP Queries on Another Device |
| SNMP Query on another device. |
SNMP Table Queries on Another Device |
| SNMP Table Query on another device. |
WBEM Associators on Another Device |
| WBEM Associators on another device. |
WBEM Instances on Another Device |
| WBEM Instances on another device. |
WBEM Queries on Another Device |
| WBEM Queries on another device. |
WMI Queries on Another Device |
| WMI Queries on another device. |
File Systems on Another Device |
| File systems. |
Registry Keys on Another Device |
| Registry Keys on another device. |
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