How the discovery probe works ,whether the discovery is based on ip or mac or host name .We need to handle all the discovery using IP address only .Whether it is possible .Please help.
Can anyone help on this .
The discovery wizard allows you to specify authentication credentials and define IP address ranges to scan.
Discovery finds virtually all connected resources on the network and provides detailed information on device type, configuration, and asset/inventory data.
By using ICMP, ARP, DNS, SNMP (v1, v2, and v3), WMI, SSH, and NetBIOS, discovery finds a wide range of devices and device information.
This link should provide some more information - Discover Systems to Monitor - CA Unified Infrastructure Management - 8.31 - CA Technologies Documentation
Thanks Philip ,But i am not using discovery wizard to discover the servers manually.I have a discoveryserver and probe discovery queues created across hubs .
In UMP under Inventory ->Automatic i can see all my robots . How this discovery happens ?
For robots, the discovery_Server located on your primary hub will attempt to connect to your downstream robot's niscache. From here it will request the device_id. The location of this is in the Nimsoft/niscache/.robot_Device_id directory on your local robots.
For some remote probes that are being monitored this can be gathered in one of two ways.
1) Configuring discovery queues with certain probes. IE snmpcollector, vmware, and azure will publish a ctdgraph object that contains the devices being monitored (IE, a vm within the vCenter) and the discovery_server will consume this message and add it to CM_COMPUTER_SYSTEM. (Really CM_DEVICE -> Then CM_COMPUTER_TABLE)
2) Older probes will use the niscache and create met_id's and ci_ids. The discovery server will attempt to connect and pull these objects back and then add it to CM_COMPUTER_TABLE. (Really CM_DEVICE -> Then CM_COMPUTER_TABLE)
Then what is the work of discovery agent .Whether discovery_agent is involved in this process .
Discovery agent is for the part of the processes that Philip Cashion described.
To reiterate It's part of the discovery wizard. Discovery agent will use ICMP, ARP, DNS, SNMP (v1, v2, and v3), WMI, SSH, NetBios (assuming these have been configured) and will publish the results onto the Discovery Queues you setup. Discovery_server will again consume these and place them into the CM_* tables in the database.
This is why it's ideal to have discovery_Agents on different network segments. If you're not on the local network a large majority of the above protocols will be blocked or fail. IE, arp, dns (discovery agent does an nslookup to find a devices fqdn).
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