Ping
Last updated: May 18, 2009
This section is only applicable to the lab application.
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 mobile station can be logged using the Wireless Protocol Advisor (WPA). See
Protocol Logging During Ping
.
Operating Considerations
-
Ping is only available in Active Cell operating mode and the system type is set to IS-2000.
-
When pinging the DUT, a packet data connection (either with SO33 or SO33 (+ F-SCH) service option) must be in the connected or dormant state (see
Packet Data Connection Processing States
). Your mobile station must support ping for you to be able to successfully ping the DUT IP Address. See
Ping the DUT from the test set
.
-
There are restrictions regarding IP Addresses that are valid for use. See
IP 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 Mobile Station 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 decided 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.
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