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External Logging
Header
The header fields shall be as per the RFC 5424. Fields shall be separated by ' ' (white space) as per the RFC.
The header consists of the following fields:
Field
Priority
Version
Timestamp
Hostname
App name and PROC ID
MSG ID
OL-32659-01
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
Syslog Message Format
Description
• The priority value represents both the facility
and severity.
• Ensure that the severity code is set to
Informational for all the messages at value 6.
• This field denotes the version of the
specification of the syslog protocol.
• In CGv6 application, the version value is set to
1.
• This field is needed to trace the port usage.
• The format is <year> <mon> <day>
<hh:mm:ss>.
• Ensure that the syslog collector converts the
time to local time whenever needed.
Note
The timestamp is always reported in
GMT/UTC irrespective of the time
zone configured on the device.
• This field is used to identify the device that sent
the syslog message.
• While configuring the syslog server, ensure that
the host name does not exceed 31 characters.
• The default value for the host name is '-'.
These fields are not included. In ASCII format, '-' is
included for these fields.
• This field identifies the type of the syslog
message.
• In the ASCII format, the values for NAT44 and
DS Lite messages are NAT44 and DS LITE
respectively.
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