Find out Bandwidth used on interface

[Justin Westover]

Is there a way I can find out the amount of bandwidth i'm using on a particular interface on a 4507 cisco multi-layer switch? It is a gig port and I have it setup for monitoring (spanning) and I see packets being dropped in the "Total Output Drops" area. To me it looks like it must be exceeding the 1gig limit but I don't know a way to check to make sure. I also have the queueing strategy set to FIFO. 

[glen.grant]

  For a snapshot  you can use show int summ  and that will give you bps , packets etc...

[Kimberly Adams]

Justin,

If you know the specific port that you want to check, then you can run the command that Glen suggested or show int [fastethernet or gigabitX/X].

Here is an example from a different kind of switch.

sh int fa0/1

FastEthernet0/1 is up, line protocol is up (connected)

  Hardware is Fast Ethernet, address is b8be.bfc4.ff81 (bia b8be.bfc4.ff81)

  Description: TRUNK TO AT&T ROUTER FA0/0

  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

     reliability 255/255, txload 4/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 100Mb/s, media type is 10/100BaseTX

  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: 0/0 (size/max)

  5 minute input rate 131000 bits/sec, 124 packets/sec

  5 minute output rate 1602000 bits/sec, 213 packets/sec

     1061017156 packets input, 135745243577 bytes, 0 no buffer

     Received 19694 broadcasts (17437 multicasts)

     0 runts, 0 giants, 0 throttles

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

     0 watchdog, 17437 multicast, 0 pause input

     0 input packets with dribble condition detected

     1835909260 packets output, 1670293894611 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

I do hope this helps.

Cheers,

Kimberly

[singhaam007]

hello justin,

first of all change the input rate to 30 seconds.

config t

load-interval 30

exit

then use

sh int f0/1 | inc drops|bits

it will show you how much trafic going through or any packet drops as well.

keep repeating it again and again and you will get some good information.

please rate if its helpful

thanks

[AbrahamV]

Helpful

[Samiullah Osman]

the command ( load-interval 30 ) does`t works in cisco 3900 router

I need some help