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Cisco 10008 Router Performance Routing Engine 3 Installation

OL-8544-01

Analyzing and Troubleshooting Packets

After processing the 100 UDP packets, the show pxf cpu commands are entered to display statistical

information about the packets.

Hardware and Software Components

Table 7 lists the hardware and software components used in the case study.

Displaying Packet Statistics for ACLs

The show pxf cpu statistics security command provides statistical information about the packets

denied, permitted, and logged by ACLs. The router collects statistics for mini-compiled ACLs, but not

for turbo-compiled ACLs.

The following example output provides packet information before sending the 100 packets. Notice that

the Packets Denied field indicates that no packets have been denied by ACL 108. The Denied and Log

field indicates that no denied packets have been logged.

Router# show pxf cpu statistics security

ACL Pkts Pkts Denied Permit

Name Denied Permitted & Log & Log

108 0 0 0 0

The following example output results after sending the 100 packets. Notice that the Packets Denied field

now indicates that 100 packets have been denied. Recall that the router denied the packets because they

matched the implicit deny statement. This statement does not include a log keyword, which causes

information to be sent to the console. Therefore, no logging occurs and the Denied and Log fields

indicate this.

Router# show pxf cpu statistics security

ACL Pkts Pkts Denied Permit

Name Denied Permitted & Log & Log

108 100 0 0 0

Displaying IP Forwarding Statistics

The show pxf cpu statistics ip command provides statistical information about IP forwarding. The

following example output indicates the count of the IP forwarding counter before sending the 100

packets. Notice that the count is 402.

Router# show pxf cpu statistics ip

FP ip statistics

dropped 0

forwarded 402

punted 540

input_packets 942

icmps_created 0

noadjacency 0

Table 7 Hardware and Software Components

Cisco IOS Release Processor Image

12.2(31)SB2 ESR-PRE3 c10k3-p11-mz

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 36 37 38

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