Cisco 10008 Installation And Configuration Manual page 40

Analyzing and Troubleshooting Packets
The following are examples of packets that can cause feedbacks to occur:
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The feedback counter reflects the total number of feedbacks through the PXF by all packets. The counter
increments one time for each additional pass a packet makes.
When a packet is denied because of an ACL deny statement, the router drops the packet. Dropped packets
do not need further processing and, therefore, are not fed back through the PXF. In this case, the feedback
counter does not increment.
Displaying Packet Statistics
The Cisco 10008 router supports show pxf cpu commands that allow you to determine the following
information:
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To display packet statistics for the PRE4, enter the following commands:
Command
Router# show running-config
Router# show interfaces type slot/subslot/port
Router# show version
Router# show pxf cpu access-lists
Router# show pxf cpu atom
Router# show pxf cpu bba
Router# show pxf cpu buffers
Router# show pxf cpu context
Router# show pxf cpu feedback
Router# show pxf cpu isg
Cisco 10008 Router PRE4 Installation and Configuration Guide
40
Packets that are forwarded and logged to the console
ICMP packets that are sent
Packets that require both input and output quality of service (QoS)
Forwarding engine traffic load
Forwarding engine actions on the traffic
Traffic load from the PXF to the RP
Status of output packet buffers for the queuing system
Purpose
Displays the current router configuration.
Displays information about an interface.
Displays information about the currently
loaded software version along with hardware
and device information.
Displays PXF memory information for ACLs.
Displays PXF Any Transport over MPLS
(AToM) forwarding information for an
interface or Virtual Channel Common Index
(VCCI).
Displays PXF broadband aggregation (BBA)
groups information.
Displays packet buffer memory for temporary
packet storage in the Cisco Internetwork
Performance Monitor (IPM) of the PXF.
Displays the current and historical loads on
the PXF.
Displays the total number of feedbacks
through the PXF by all packets.
Displays PXF policy and template
information.
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