Cisco 10008 - Manual (Page 25)

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Cisco 10008 Router Performance Routing Engine 3 Installation
OL-8544-01
Analyzing and Troubleshooting Packets
Manually Setting the Speed for the NME Port for the PRE3
To manually set the speed of the NME port for PRE3, enter the following command in interface
configuration mode. The default speed of the NME port is 100 Mbps.
Analyzing and Troubleshooting Packets
The PXF engine of the PRE3 is responsible for processing and forwarding packets. As processing
occurs, PXF counters increment to reflect the internal behavior of the PRE. The router collects this
statistical information from the counters and appropriately displays it when you enter specific
show pxf cpu commands. The output from these commands is useful in analyzing and troubleshooting
denied and logged packets.
To correctly interpret packet statistics, it is important that you understand the behavior of the router
during packet and access list processing, and the counters that provide the statistical data. This section
briefly describes access list processing, some PXF counters and their behavior, and some of the
commands you can use to display statistical information. This section is based on PRE3 with differences
noted for other PREs.
Command Purpose
Router(config-if)# full-duplex Configures the NME port for full-duplex operational mode.
For PRE3, the full-duplex command appears in the router’s
configuration file. If the configuration file does not specify a
duplex mode, half-duplex mode is implied.
Note To return the system to its default duplex mode
(autonegotiation), enter the no duplex command.
Router(config-if)# half-duplex Configures the NME port for half-duplex operational mode.
For PRE3, the half-duplex command does not appear in the
router’s configuration file, but it is implied.
Note To return the system to its default duplex mode
(autonegotiation), enter the no duplex command.
Command Purpose
Router(config-if)# speed {10 | 100
| auto}
Configures the speed of the NME port.
10—Sets the speed for 10 Mbps.
100— Sets the speed for 100 Mbps (the default).
auto—Enables the NME port to autonegotiate the speed.
To return the system to its default speed (100 Mbps), enter the
no speed command.