how to know the real time bandwidht on interface from cli not from snmp ??

[Dr.X]

hi ,

i have a snmp tool that give me the bandwidth of interface after 40 sec .

but i want from router to know the real time bw utilization

how to verify it from router ????

regards

[Abzal · Accepted solution]

Hi,

You can see utilization of interface by running command

show interfaces g1/0/19

And output something like:

GigabitEthernet1/0/19 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

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

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX

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

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

  Last input 00:00:14, output 00:00:02, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 380

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  1 minute input rate 5175000 bits/sec, 516 packets/sec

  1 minute output rate 180000 bits/sec, 296 packets/sec

     56938680451 packets input, 80932479911971 bytes, 0 no buffer

     Received 5973846 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles

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

     0 watchdog, 2529878 multicast, 0 pause input

     0 input packets with dribble condition detected

     31254785516 packets output, 5084065295630 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

You can also change default 5 min load interval to minimum 30 second.

conf t

int g1/0/19

load-interval 30

load-interval

Changes the length of time for which data is used to compute load statistics.

https://supportforums.cisco.com/thread/149119

http://packetlife.net/blog/2008/jun/21/tweaking-interface-load-interval/

Hope it will help.

[Dr.X]

thanks very much ,

but in my opinion 30 seconds is long !!!!

is there less than 30 sec interval ???

regards

[Abzal]

Unfortunately, the load interval can be only between 30 and 600 seconds, specified in increments of 30 seconds. It is good to have something than nothing .

Abzal.

[Dr.X]

Abzal Sembay wrote:
Unfortunately, the load interval can be only between 30 and 600 seconds, specified in increments of 30 seconds. It is good to have something than nothing .
Abzal.

sure

thanks

regards

[cadet alain]

Hi,

i think you should ask on the EEM forum for an EEM applet  code snippet, this way you could retrieve the value inbound/outbound bytes on an interface every x seconds with SNMP and let EEM do the math and output the result.

Regards.

Alain

Don't forget to rate helpful posts.

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

For infrequent usage, you could also manually issue the show interface command more than once.  Note the approximate time between entering the show interface commands.  Note bytes values for input and output (see below).  Determine the delta byte values between the show commands.  Divide by the time between entering commands.

GigabitEthernet1/0/19 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is

  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,

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

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX

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

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

  Last input 00:00:14, output 00:00:02, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 380

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  1 minute input rate 5175000 bits/sec, 516 packets/sec

  1 minute output rate 180000 bits/sec, 296 packets/sec

     56938680451 packets input, 80932479911971 bytes, 0 no buffer

     Received 5973846 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles

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

     0 watchdog, 2529878 multicast, 0 pause input

     0 input packets with dribble condition detected

     31254785516 packets output, 5084065295630 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

[Dr.X]

JosephDoherty wrote:
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
 Posting
 For infrequent usage, you could also manually issue the show interface command more than once.  Note the approximate time between entering the show interface commands.  Note bytes values for input and output (see below).  Determine the delta byte values between the show commands.  Divide by the time between entering commands.
GigabitEthernet1/0/19 is up, line protocol is up (connected) 
  Hardware is Gigabit Ethernet, address is 
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, media type is 10/100/1000BaseTX
  input flow-control is off, output flow-control is unsupported 
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:14, output 00:00:02, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 380
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  1 minute input rate 5175000 bits/sec, 516 packets/sec
  1 minute output rate 180000 bits/sec, 296 packets/sec
     56938680451 packets input, 80932479911971 bytes, 0 no buffer
     Received 5973846 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     1 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 2529878 multicast, 0 pause input
     0 input packets with dribble condition detected
     31254785516 packets output, 5084065295630 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

good idea , but it seems i must accurate when i press on the cli so that i calculate the delta time

thanks

regards

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

CSCO12006413 wrote:
good idea , but it seems i must accurate when i press on the cli so that i calculate the delta time 

Correct, but that's true of any polling.  For example, how precise is a SNMP poller (even EEM)?  Although likely more precise than manual counting, how much precision do you need?

Again, it's just a technique to get a ballpark estimate when you want to know bandwidth utilization over a second or few seconds and you haven't anything else set up to provide more accurate information.  There's a reason I noted "infrequent". 

So for approximate bandwidth utilization, over a few seconds, try something like type show command, press enter, start saying one Mississippi, two Mississippi, ..., five Mississippi, and while counting press up arrow, and at end of one of the Mississippis, press the enter key again.

[alfredobastos]

On switch Nexus, try using the command: show interface ethernet 1/11 | inc rate

LABSP-N5K01-RK04# show interface ethernet 1/11 | inc rate
30 seconds input rate 5919584 bits/sec, 1304 packets/sec
30 seconds output rate 312 bits/sec, 0 packets/sec
input rate 5.91 Mbps, 1.30 Kpps; output rate 200 bps, 0 pps