3Com Switch 7750 Configuration Guide Guide

INFORMATION CENTER

Information Center

Overview

Information center is an indispensable part of Ethernet switches and exists as an

information hub of system software modules. The information center manages

most information outputs; it sorts information carefully, and hence can screen

information in an efficient way. Combined with the debugging program

(debugging commands), it provides powerful support for network administrators

and developers in network operation monitoring and fault diagnosis.

Information output bythe Switch 7750 Family is presented in the following format:

<priority>timestamp sysname module/level/digest:content

Here, angle brackets "<>", spaces, slashes "/" and colon are the fixed format of

information.

Below is an example of log output to a log host:

<188>Apr 9 17:28:50:524 2004 3Com IFNET/5/UPDOWN:Line protocol on

the interface M-Ethernet0/0/0 is UP (SIP=10.5.1.5 ,SP=1080)

The following describes the fields of an information item:

1 Priority

The calculation formula for priority is priority = facility Ðó 8 + severity - 1. For

Comware, the default facility value is 23 and severity ranges from one to eight.

See

Table 586 for description of severity levels.

Note that no character is permitted between the priority and time stamp. The

priority takes effect only when the information is sent to the log host.

2 Time stamp

The time stamp sent to the log host is in the format of Mmm dd hh:mm:ss yyyy,

where:

Mmm" represents the month, and the available values are: Jan, Feb, Mar, Apr,

May, Jun, Jul, Aug, Sep, Oct, Nov and Dec.

dd" is the date, which shall follow a space if less than 10, for example, " 7".

hh:mm:ss" is the local time, where "hh" is in the 24-hour format, ranging from

00 to 23, both "mm" and "ss" range from 00 to 59.

yyyy" is the year.