Cisco Cisco Packet Data Gateway (PDG) Guia De Resolução De Problemas
Troubleshooting the Service
▀ Test Commands
▄ Cisco ASR 5000 Series Mobility Management Entity Administration Guide
110
OL-22987-01
Test Commands
In the event that an issue was discovered with an installed application or line card, depending on the severity, it may be
necessary to take corrective action.
necessary to take corrective action.
The system provides several redundancy and fail-over mechanisms to address issues with application and line cards in
order to minimize system downtime and data loss. These mechanisms are described in the sections that follow.
order to minimize system downtime and data loss. These mechanisms are described in the sections that follow.
Using the PPP Echo-Test Command
The system provides a mechanism to verify the Point-to-Point Protocol session of a particular subscriber by sending
Link Control Protocol (LCP) packets to the mobile node. This functionality can be extremely useful in determining the
quality of the air link and delays that may occur.
Link Control Protocol (LCP) packets to the mobile node. This functionality can be extremely useful in determining the
quality of the air link and delays that may occur.
The command has the following syntax:
ppp echo-test { callid
call_id
| ipaddr
ip_address
| msid
ms_id
|
username
subscriber_name
}
Keyword/Variable
Description
callid
call_id
Specifies that the test is executed for a subscriber with a specific call identification number (callid).
call_id
call_id
is the specific call identification number that you wish to test.
ipaddr
ip_address
Specifies that the test is executed for a subscriber with a specific IP address. ip_address is the
specific IP address that you wish to test.
specific IP address that you wish to test.
msid
ms_id
Specifies that the test is executed for a subscriber with a specific mobile station identification
(MSID) number. ms_id is the specific mobile station identification number that you wish to test.
(MSID) number. ms_id is the specific mobile station identification number that you wish to test.
username
subscriber_name
Specifies that the test is executed for a subscriber with a specific username. subscriber_name
is the specific username that you wish to test.
is the specific username that you wish to test.
The following figure displays a sample of this command‟s output showing a successful PPP echo-test to a subscriber
named user2@aaa.
named user2@aaa.
USERNAME: user2@aaa MSID: 0000012345 CALLID: 001e8481
Tx/Rx 1/0 RTT(min/max/avg) 0/0/0
USERNAME: user2@aaa MSID: 0000012345 CALLID: 001e8481
Tx/Rx 1/1 RTT(min/max/avg) 77/77/77 (COMPLETE)