Cisco Cisco Packet Data Interworking Function (PDIF)
NAT Changes in Release 17
NAT Enhancements for 17.0 ▀
Release Change Reference, StarOS Release 17 ▄
339
New Behavior: The new KPI will contain data to indicate how many packets have been dropped for a subscriber due to
unavailability of port chunks. EDRs will be generated to track the event with IMSI and a time stamp of the event. Since
there is a potential for many packets to be dropped, the number of EDRs generated will be limited to one per
occurrence. Only one EDR will be generated where start of the event will be packets drop due to unavailability of port
chunks and end of the event will be a configured timer value. An Alarm will also be generated if the packets drop due to
port unavailability by configuring a threshold for dropped packets. If exceeded, the system will suspend creating EDRs
and send out an SNMP trap to notify administrators.
unavailability of port chunks. EDRs will be generated to track the event with IMSI and a time stamp of the event. Since
there is a potential for many packets to be dropped, the number of EDRs generated will be limited to one per
occurrence. Only one EDR will be generated where start of the event will be packets drop due to unavailability of port
chunks and end of the event will be a configured timer value. An Alarm will also be generated if the packets drop due to
port unavailability by configuring a threshold for dropped packets. If exceeded, the system will suspend creating EDRs
and send out an SNMP trap to notify administrators.
The
nat pkts-drop
CLI keyword has been added in the Firewall-and-NAT Policy Configuration mode to configure
the format of the EDR in which records for packets drop will be saved, and the time interval for EDR generation.
Statistics, SNMP Traps and Thresholds support have also been provided in support of this feature.
Statistics, SNMP Traps and Thresholds support have also been provided in support of this feature.
Command Changes
nat pkts-drop
In this release,
nat pkts-drop
is a new command. This command is used to configure the EDR format in which
records for dropped NAT packets will be saved and the time interval for EDR generation.
configure
active-charging service service_name
fw-and-nat policy policy_name
nat pkts-drop { edr-format edr_format_name | timeout timeout_value }
{ default | no } nat pkts-drop { edr-format | timeout }
end
attribute
In this release, the
sn-nat-no-port-packet-dropped
attribute is added to report the number of packets dropped
because of no NAT IP/port.
configure
active-charging service service_name
edr-format format_name
[ no ] attribute sn-nat-no-port-packet-dropped priority <priority>
end
ip pool
In this release,
pkts-drop
is a new keyword added to this command, and displays information about packets dropped
because of unavailability of NAT resources.
configure
context context_name