Getting a Quick Start with NerveCenter - Preparing To Use NerveCenter - Adding Nodes to the Database - Querying Nodes -
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Querying Nodes

After defining a node, you may want to query the node. To query a node, you can send an ICMP Echo request (ping) or SNMP GetRequest message. There are two reasons for doing this:

• To ensure that there is a connection with the node
• To obtain system information about the node

 
  To query a node:

1. From the client's Admin menu, choose Node List.

   The Node List window is displayed.

2. Highlight one of the nodes you defined and select Open.

   The Node Definition window appears.

3. Select the Query Node tab.

   The Query Node page is displayed.

   Query Node Page

   

   Click the thumbnail above to view full-sized image.

4. If you entered more than one IP address for the node, choose the address you want to check from the IP Address drop-down listbox.
5. Select Ping.

   If the ping is successful, the Ping Result field displays the reply IP address and response time.

6. Select Get.

   If the command is successful, NerveCenter displays the node's description, its SNMP system object identifier, and length of time the node has been up (in hundredths of a second).

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   Note    NerveCenter must know the node's SNMP version before it can perform a GetRequest message. When you define nodes manually, NerveCenter sets the version to SNMP v1 by default.

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If your commands failed to obtain responses, check to be sure that the node is turned on. If the ping was successful but the GetRequest was not, make sure the node is running an SNMP agent. You can also check the node's network settings to be sure its community name matches the name in its definition window.

If you want to do repeated communication requests, select Clear to empty the result fields before performing each operation.

When you are finished, repeat this process for the other nodes you've defined.