Troubleshooting guide

ManualsBrandsCisco ManualsComputer equipmentC8510-SRP - Switch Route Processor

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E-5

ATM and Layer 3 Switch Router Troubleshooting Guide

OL-1969-01

Appendix

Architecture Problems

GigabitEthernet1/0/0 is up, line protocol is up

Hardware is epif_gigether_port, address is 00d0.baaf.76fb (bia 00d0.baaf.7703)

MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 1/255

Encapsulation ARPA, loopback not set, keepalive set (10 sec)

Full-duplex, 1000Mb/s, GBIC not connected, Force link-up

ARP type: ARPA, ARP Timeout 04:00:00

Last input never, output never, output hang never

Last clearing of "show interface" counters 23w4d

Queueing strategy: fifo

Output queue 0/40, 0 drops; input queue 0/75, 0 drops

5 minute input rate 1248000 bits/sec, 502 packets/sec

5 minute output rate 1487000 bits/sec, 490 packets/sec

3332825950 packets input, 2069763635 bytes, 24911 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

0 watchdog, 430232925 multicast

0 input packets with dribble condition detected

1164199966 packets output, 4006760239 bytes, 0 underruns(0/0/0)

0 output errors, 0 collisions, 0 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out

Switch#

Step 2 Check the no buffer field to see whether the count is a high percentage of the packet input. If the number

is too high, proceed with the following process to fix the problem.

Step 3 Reduce any unneeded multicast traffic on the VLANs.

Step 4 To reduce traffic on the ATM switch router, enable IGMP snooping on the connected Ethernet switches.

Step 5 Increase the input and output hold queues on the Gigabit Ethernet interfaces. Try doubling the value of

the input and output hold queues using the processes described in Step 6 through Step 8.

Step 6 Enter the show interfaces card/subcard/port command to verify the values of the input and output hold

queues on the Gigabit Ethernet interface.

Switch# show interfaces GigabitEthernet 1/0/0