3Com Router User Manual

Test Tool of Network Connection87
Please see relevant chapters in the 3Com Router Command Reference Guide for 
detailed meanings of various options and parameters. 
Ping supporting IP protocol
■For each ping message sent, if the response message has not been received 
when the waiting time crosses the threshold, then 
Request time out is 
output.
■Otherwise, the data byte number, message sequence number, TTL, and 
response time in the response message will be displayed. 
■Finally, the statistic...

88CHAPTER 6: DISPLAY AND DEBUGGING TOOLS
  !!!!!
 --2.0.0c91.f61f IPX ping statistics--
  5 packets transmitted
  5 packets received
  0% packet loss
  round-trip min/avg/max = 1/2/3 ms
tracert command (Trace 
Route Command)The trace route command helps to trace the current network path to a 
destination. With 
tracert command, all gateways by which the test packet 
passes from the source address to the destination address can be displayed. It can 
be used to check network connection and locate fault....

Log Function89
 3  lilac-dmc.Berkeley.EDU (128.32.216.1)  39 ms  19 ms  19 ms
 4  ccngw-ner-cc.Berkeley.EDU (128.32.136.23)  19 ms  39 ms  39 ms
 5  ccn-nerif22.Berkeley.EDU (128.32.168.22)  20 ms  39 ms  39 ms
 6  128.32.197.4 (128.32.197.4)  59 ms  119 ms  39 ms
 7  131.119.2.5 (131.119.2.5)  59 ms  59 ms  39 ms
 8  129.140.70.13 (129.140.70.13)  80 ms  79 ms  99 ms
 9  129.140.71.6 (129.140.71.6)  139 ms  139 ms  159 ms
 10  129.140.81.7 (129.140.81.7)  199 ms  180 ms  300 ms
 11  129.140.72.17...

90CHAPTER 6: DISPLAY AND DEBUGGING TOOLS
Set the direction of syslog outputting log information 
As described before, Syslog of the 3Com Router 1.x can output various log 
information in four directions: 
■Output log information to local control console via Console port
■Output log information to remote Telnet terminal or dumb terminal. This 
function is helpful to remote maintenance.
■Allocate proper router buffer to record log information. 
■By configuring the log host, log information is directly sent...

Log Function91
Set Severity of Log Information
Syslog is divided into 8 levels according to the Severity (or priority) of the 
information. The rule to filter the log information according to the level is: the 
more urgent the log information is, the less severe it will be. The log information 
with severity higher than the set threshold is forbidden to be output. Only the log 
information with severity no higher than this threshold can be output. 
Perform the following task in system view.
Ta b l e 67...

92CHAPTER 6: DISPLAY AND DEBUGGING TOOLS
Here, module stands for the module name. Only the log information related to a 
specified module can be filtered and output.
Turn on/turn off syslog
Please enter the following commands in system view.
Ta b l e 70   Turn on/turn off syslog
When Syslog is turned on, the performance of the system will be affected due to 
the information classification and output - especially when processing a large 
amount of information.
Display and Debug 
Syslog Perform the...

Log Function93
3When log files like config and security are created and /etc/syslog.conf file is 
modified, an HUP will be sent to the system daemon, Syslogd, by executing the 
following commands to make Syslogd re-read its configuration file 
/etc/syslog.conf. 
#ps -ae | grep syslogd
147
#kill -HUP 147
After the above operations, the router can record information in relevant log files. 
Configure Facility (facility name), Severity (severity threshold), Filter, and 
syslog.conf file to make a detailed...

94CHAPTER 6: DISPLAY AND DEBUGGING TOOLS 

7
POS TERMINAL ACCESS SERVICE
This chapter contains information on the following topics:
■POS Access Service Overview
■POS Access Service Configuration
■Display and Debug POS Access
■Typical Configuration Example of POS Access Service
POS Access Service 
OverviewPoint of Sale (POS) service is a type of smart card service widely used in shopping 
malls, gas stations, and so on. It links the POS terminal device at the commercial 
client (located in shopping mall or gas station) to the bank card accounting...

96CHAPTER 7: POS TERMINAL ACCESS SERVICE
Figure 40   Dial-up access when the POS access router is located at the commercial client 
side
Due to the way POS access service usually operates, that is, low speed, high 
frequency and small traffic, it is rather sensitive to the dial-up connection time and 
requires the interface board for fast dial-up function. However, the present 
common PC modem cannot meet the response time requirements of 10 to 20 
seconds. At present, most POS equipment manufacturers...