Advanced Mode
In the advanced mode of auto discovery, you can select from any of the following modes: routing-based, ARP(ND)-based, IPsec VPN-based, network segment-based and PPP-based.You can configure the periodic auto discovery feature and save the current configuration as an auto discovery plan to perform auto discovery periodically.
Operation Procedure
- Click the Resource tab, and on the navigation tree, click the Resource Management > Auto Discovery link to enter the Auto Discovery page.
- Click the Go to Advanced link to switch to the advanced mode.
- Select an auto discovery mode, and click Next to make proper settings.
- Click Auto discovery to start the discovery. Click Save Only to save the configuration (not including auto discovery). Click Prev to go back to the previous page. Click Save as Plan to save the configuration as an auto discovery plan, which enables the system to execute auto discovery at the specified intervals. The Save as Plan option is available only when the periodic discovery feature is enabled.
Precautions
- A big hop count may result in a time and bandwidth consuming discovery, the auto discovery process consumes time and bandwidth, which affects network performance.
- In the routing-based, ARP-based, and IPsec VPN-based discovery modes, the seed is typically a gateway or a layer 3 device, such as a router.
- In the IPsec VPN-based mode, the system only discovers the IPsec-supporting devices, including the VPN gateways and the routers supporting VPN.
Parameters
- Hop Count: The system discovers the devices with up to 7 hops. The system discovers devices that directly connect to the seed device with the hop count minus one. Then it starts the discovery for devices connected to the discovered ones if the hop count is greater than 0.
- Discover Non-SNMP Devices: With this parameter, the system discovers both the SNMP devices and those have not enabled SNMP protocol. This parameter is not available in the IPsec VPN-based mode.
- Scan Devices one by one in the Segment: This enables the system discover all the devices in the segment, however, makes the discovery time-consuming. The system pings the IP addresses serially one by one in the segment and adds the devices that give responses. The address range is the entire segment for the interface of the discovered device.
- Discover devices not supporting ping: If you select this option, devices that do not support ping can also be discovered. Devices that filter or do not respond to ICMP packets from the system are considered as not supporting ping, for example, firewalls.
- Seed IP: The system auto-discovers manageable devices from the seed IP based on its routing table or ARP table. The seed IP device is usually a gateway or a layer 3 device.
- Filter Settings: This parameter helps you to shield undesired devices and subnets. If you set the filter settings and enable auto discovery for the devices in the subnet list, the devices only in the filtered subnets are auto discovered. If you set the filter settings and disable auto discovery for the devices in the subnet list, the devices in the subnets are not auto discovered. If you do not set the filter settings, no subnets are filtered. If you select filtering by device model, specify a device model, and then save the configuration, all device models with the same SysOID as that of the specified model will be auto-discovered. For example, if you specify the ICMP model with the SysOLD as none, all models with SysOLD as none will be auto-discovered.
- Enable Periodic Auto Discovery: This parameter helps you auto discover the devices at the set interval, to add the devices in the network.
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