![]() Intermapper then queries each of the discovered routers for their connected networks, and begins autodiscovery on each network. If Intermapper discovers an SNMP-speaking router, it attempts to discover what interfaces the router has, and what other routers are connected to those interfaces.It then performs the following processes concurrently and iteratively until the specified limits are reached: If it finds a router, it then scans all attached subnets, mapping all devices it finds, until it reaches the hop count specified in the Discovery Options section of the Automatic Device Discovery window and in the Network Scanning window. HTTP - If the device responds to an HTTP request, an HTTP probe is added to the device (along with SNMP Basic Traffic or Ping/Echo probe), and the device becomes a probe group.ĭuring autodiscovery, Intermapper attempts to discover the parameters (IP address and subnet mask) of the subnet of the starting device.If the device does not respond to SNMP, the probe is set to Ping/Echo. Any device that responds is added to the map and uses the SNMP Basic Traffic probe. SNMP - Intermapper sends an SNMP GetRequest to each address in the range.If a corresponding name is present, the device is added to the map. Named - Each IP address in the subnet is looked up in the DNS.A device is added for each IP address that responds. Active - Intermapper performs a complete IP address scan for each network.Click Automatically layout to let Intermapper layout the map automatically.Ĭlick Start Discovery to initiate a scan of the specified host.Ĭheck the filters you want to use to add devices to the map:.Click to check this box, or click Edit Filters to open the Network Scanning window. Scan for devices on all networks - Specify which kinds of devices should be automatically added to the map.Stay within NN hops of starting device - Stops autodiscovery after Intermapper has searched the specified number of hops from the starting device.(Intermapper will read SNMP information using the community string you enter. Specify an SNMP community -The SNMP Read-only community string to be used to interrogate all devices.Starting host name – The DNS name, IP address, or WINS name of a device to use as a starting point for the autodiscovery.You control the starting point, the SNMP Community string, the breadth of the network search, and the kinds of devices that are automatically added to the map using this window. All devices added before you stopped the process remain in the list. The discovery process is stopped, and no new devices or networks are added. Click the Map View button near the upper left corner of the Map window to view your network as a map, showing devices and networks as icons, with the interconnections between them.As the network is scanned, discovered devices appear in the current map (or in a list if you have cleared the Automatically Layout check box.) When Intermapper has found all the devices within the specified subnet, the Discovery Status bar disappears. A Discovery Status bar appears as shown:ĩ. Click OK to start the Auto-discovery process. ![]() Click the Filter button to set a filter for the discovery.Ĩ. Select your Discovery Options, as explained in The Auto-Discovery Window below.ħ. If you have SNMP-speaking devices in your network, specify an SNMP Community string. If you enter the name or address of an SNMP-speaking router, Intermapper draws interconnections to other routers in the network more quickly An IP address (if you want to create a map of another part of a network).Use the default value, or enter any of the following: It is the DNS name, or IP address of a router, or if there's no router, the computer Intermapper is running on. Enter a host name or IP address you want to use as the starting point for autodiscovery.The Automatic Device Discovery dialog appears, as shown below. Click to choose Autodiscovery, then click Create.Use the Autodiscovery function to create an initial network map:
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