Ping

Ping Description

Ping is a tool to help check system interconnects. The test set has a Ping feature that allows you to ping either the device under test (DUT) or an alternate address (see How Do I Ping a Device From the Test Set? ). It sends an IP datagram (technically an ICMP message: Internet Control Message Protocol) from the test set to the ping target, and expects a response from the target. You can define the size of the IP datagram and the Internet Protocol to use (whether IPv4 or IPv6) when using this feature. The default packet size is 64 bytes for both IPv4 and IPv6. If a response is received it is recorded on the test set's display.

Ping is the simplest implementation of the Data Channel feature. If you are trying to debug a system that is not responding to a full network setup (for example a WAP setup), try pinging the DUT from a computer attached to the network. Experiment with very large packets, very long timeouts and continuous pings.

How to Read the Ping Results

If the connection is good, then the DUT will return a packet to the test set and the packet transfer information is displayed on the test set's screen. In the example below ping count was set to 1. Note that it took 2700 milliseconds to complete the ping.

Ping data passing between the test set and the access terminal can be logged using the Wireless Protocol Advisor (WPA). See Protocol Logging During Ping .

Operating Considerations

• When pinging the DUT, a packet data connection must be in the connected or dormant state (see Ping the DUT from the test set ).
• There are restrictions regarding IP Addresses that are valid for use. See IP Address Requirements or IPv6 Address Requirements for more information.
• When the Ping originates from the test set and the target is the DUT, the Source Address in the Forward/Down direction is always 130.29.181.203, and the Destination Address in the Reverse/Up direction is the same value. See Method 1: Ping the access terminal from the Test Set for more information.
• When External PDSN State is On , the operation to ping the DUT from the test set ( Ping the DUT from the test set ) will be rejected since the IP address of the DUT is assigned by the external MOB-IP-SIM instead of the specified DUT IP Address on the test set (see Data Channel Parameters ).
• Ping to a DUT in progress will be aborted when the External PDSN State changes to On.
• When the Ping Protocol is set to IPv6 , the Alternate Ping6 Address is divided into four parts to simplify the manual input: Alternate Ping6 Address Prefix, Upper (Hex) , Alternate Ping6 Address Prefix, Lower (Hex) ,  Alternate Ping6 Address IID, Upper (Hex) , Alternate Ping6 Address IID, Lower (Hex) .
• If the test set does not support the LAN 2 PORT due to hardware restriction and the Ping Protocol is set to IPv6 ,then ping to a DUT (the Device to Ping is set to DUT ) will cause an error indicating that the requested operation is not supported.
• When the Ping Protocol is set to IPv6 , the parameter of Ping Timeout is grayed out with a fixed value of 5 seconds.

Related Topics

Manual Operation: How Do I Ping a Device From the Test Set?

GPIB Commands: CALL:DATA

Protocol Logging During Ping