Cisco 10720 Configuration Guide - Page 119
Basic Troubleshooting Ethernet for the Access Card, Verifying Interface Configuration
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Chapter 4 Troubleshooting Basic Troubleshooting Ethernet for the Access Card Note The solutions provided do not cover all possible problems related to specific alarms. Basic Troubleshooting Ethernet for the Access Card This section provides some basic troubleshooting guidelines for Fast Ethernet and Gigabit Ethernet interfaces on the access card. For additional information about troubleshooting Ethernet configurations, refer to the Cisco IOS Software Configuration for the Cisco 10720 Internet Router publication. For additional Cisco Ethernet-related documentation, refer to "Related Documentation" section on page xix. The following sections present basic troubleshooting tips for hardware and simple software tasks. • Verifying Interface Configuration, page 4-19 • FastEthernet/GigabitEthernet Is up, page 4-20 • Line Protocol Is up, page 4-20 • Duplex Mode Setting, page 4-21 • Speed Mode, page 4-21 • Output Hang, page 4-21 • CRC Field Counters, page 4-21 • Late Collision, page 4-21 • Carrier Signal, page 4-22 Verifying Interface Configuration Use the show interfaces FastEthernet slot/port command to verify the configuration of a Fast Ethernet interface. Router# show interfaces FastEthernet 2/1 FastEthernet2/1 is up, line protocol is up Hardware is Fast Ethernet, address is 0001.64ff.3101 (bia0001.64ff.3101) Internet address is 194.16.1.1/24 MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Auto-duplex, Auto Speed, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output 00:00:04, output hang never Last clearing of "show interface" counters 00:00:13 Queueing strategy: PXF First-In-First-Out Output queue 0/8192, 0 drops; input queue 0/75, 0 drops 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog, 0 multicast 0 input packets with dribble condition detected 1 packets output, 64 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 babbles, 0 late collision, 0 deferred 78-13062-10 Cisco 10720 Internet Router Installation and Configuration Guide 4-19