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Switch port bandwidth problem


Hi there,

I have a Cisco 3020 bladeswitch that is only reporting interface bandwidth of 10000Kbit when the link is actually a gigabit interface:

GigabitEthernet0/9 is up, line protocol is up (connected)

Hardware is Gigabit Ethernet, address is 001b.0c06.4909 (bia 001b.0c06.4909)

MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

reliability 255/255, txload 1/255, rxload 21/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Auto-duplex, Auto-speed, link type is auto, media type is 1000BaseX

input flow-control is off, output flow-control is unsupported

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

Last input never, output 00:00:00, output hang never

Last clearing of "show interface" counters 00:29:44

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 844000 bits/sec, 54 packets/sec

5 minute output rate 13000 bits/sec, 37 packets/sec

179197 packets input, 243202451 bytes, 0 no buffer

Received 42 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 0 multicast, 0 pause input

0 input packets with dribble condition detected

134878 packets output, 9565053 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

0 output buffer failures, 0 output buffers swapped out

Here's the interface configuration:

Current configuration : 60 bytes


interface GigabitEthernet0/9

spanning-tree portfast


I've tried having both sides as Auto, and both sides set manually, with no luck. Has anyone seen this issue before? Any ideas?

Thanks in advance

1 Accepted Solution

Accepted Solutions


If you are running 12.2(25)SEF2, There is an internal cosmetic bug for that. It is first fixed in 12.2(35)SE.

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