3Com 3C10402B, Руководство администратора

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398 C
HAPTER
16: N
ETWORK
M
ANAGEMENT
The current administration log messages are classified to only one facility;
that is,
log .
The Priority value is calculated as follows:
1 Multiplying the Facility number by the number eight
2 Adding the numerical value of the Severity
Examples:
■
A kernel message (Facility=0) with a Severity of Emergency
(Severity=0) has a Priority value of zero (0).
■
A
local use 4
message (Facility=20) with a Severity of Notice
(Severity=5) has a Priority value of 165.
In the PRI part of a Syslog message, these values would be placed
between the angle brackets as <0> and <165, respectively. The only
time a value of zero follows the less-than character is when the Priority
value is zero. Otherwise, leading zeroes must not be used.
Header Component The Header component of the Syslog message must contain the
following:
■
A timestamp
■
An indication of the hostname or IP address of the device
■
Visible (printing) characters
■
A seven-bit ASCII code set in an eight-bit field like that used in the PRI
part.
In this code set, the only allowable characters are the ABNF VCHAR
values (%d33-126) and spaces (SP value %d32).
The Header contains two fields called the TIMESTAMP and the
HOSTNAME.
Adminlog 13 log audit(note1)
SNMP traps 14 log alert(note1)
Table 74 Facilities Mapped to the System Log Handles
Log Handles Numerical Code Facility