Incorrect BW, txload, rxload stats on GB interface on 3020 Blade Switch

Unanswered Question
Mar 16th, 2009

Hello,

It was noted that in the Device Manager, ports were being displayed with 100% utilization which is not expected with our applications. Digging through the config and "show interface" it looks like this could be related to the fact that BW is showing only 10000 Kbit on all the gigabit interfaces. It appears that txload and rxload must be derived from this incorrect number. Is there an actual speed problem or is this just with the stats? Is there a way to fix it?

Version 12.2(25)SEF1

WS-CBS3020-HPQ

GigabitEthernet0/1 is up, line protocol is up (connected)

Hardware is Gigabit Ethernet, address is 001b.0db6.4e81 (bia 001b.0db6.4e81)

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

reliability 255/255, txload 43/255, rxload 35/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 1000Mb/s, 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 00:00:01, output hang never

Last clearing of "show interface" counters never

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 1385000 bits/sec, 805 packets/sec

5 minute output rate 1693000 bits/sec, 753 packets/sec

3759796144 packets input, 2382887840 bytes, 0 no buffer

Received 112034 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

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

0 watchdog, 55 multicast, 0 pause input

0 input packets with dribble condition detected

1278989763 packets output, 2694728552 bytes, 0 underruns

0 output errors, 0 collisions, 1 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

Thanks,

Sean

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pciaccio Mon, 03/16/2009 - 11:32

The link bandwidth util is calculated with the bandwidth value on the interface. under the interface use the bandwidth command. Set it to the value you want your stts to be based upon. You may also want to use the load-theshold command and set it for 30 secs. This recalculates the bandwidth util every 30 secs as opposed to its default of 300 secs...Good Luck...

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