Structured Data
It is not used.
MSG
This field consists of the information about the NAT44 or DS Lite events. In a single UDP packet, there could
be one or more MSG fields each enclosed in [] brackets. The MSG field has many sub fields as it has a common
structure across different records (for both NAT44 and DS Lite). Note, that, depending on the event, some of
the fields may not be applicable. For example, fields such as 'Original Source IPv6' address are not applicable
for all NAT44 events. In such cases, the inapplicable fields will be replaced by '-'.
The syntax of the MSG part is as follows:
[EventName <L4> <Original Source IP> <Inside VRF Name> <Original Source IPv6> < Translated
Source IP> <Original Port> <Translated First Source Port> <Translated Last Source Port> <Destination
IP> <Destination Port>]
The descriptions of the fields in this format are as follows:
DescriptionField
Select any one of the values for EventName from the
following based on the event:
•
UserbasedA: User-based port assignment
•
SessionbasedA: Session-based port assignment
•
SessionbasedAD: Session-based port assignment
with destination information
Note: SessionbasedAD is used only if session
logging is enabled. Also, session-logging and
bulk port allocation are mutually exclusive.
•
UserbasedW: User-based port withdrawal
•
SessionbasedW: Session-based port withdrawal
•
SessionbasedWD: Session-based port
withdrawal with destination information
•
Portblockrunout: Ports exhausted
EventName
Cisco IOS XR Carrier Grade NAT Configuration Guide for the Cisco CRS Router, Release 5.2.x
98 OL-32659-01
External Logging
Syslog Message Format
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