Rapid ping vrf

[sassi-zied]

Hi all,

Is there any possibility to do a rapid ping vrf in Cisco. I found the pramater repeat but is this a rapid ping ? if so what is the ping interval ? Can we change it ? For exemple in Juniper or Alcatel we can find the parameter "rapid" i can't find it in Cisco. My goal is to do a ping with an interval (between each paket ) of 20 ms. Is it possible ?

Zied

[John Blakley]

I don't think it's possible to change the time interval between icmp packets on a Cisco device. The pings seem to be 1ms apart.

HTH,

John

[Kishore Chennupati · Accepted solution]

In cisco world a rapid ping is using timeout 0. something like this ping repeat 10000 timeout 0

This will flood the link without waiting for a reply .

repeat in cisco devices is the same as count on junipers.

Hope this is what you are looking for

Regards

Kishore

[John Blakley]

Kishore,

That's an interesting concept:

R2#ping 10.1.12.1 timeout 20 rep 500 

Type escape sequence to abort.

Sending 500, 100-byte ICMP Echos to 10.1.12.1, timeout is 20 seconds:

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

!!!!!!!!!!

Success rate is 100 percent (500/500), round-trip min/avg/max = 1/4/32 ms

R2#ping 10.1.12.1 timeout 0 repeat 500

Type escape sequence to abort.

Sending 500, 100-byte ICMP Echos to 10.1.12.1, timeout is 0 seconds:

......................................................................

......................................................................

......................................................................

......................................................................

......................................................................

......................................................................

......................................................................

..........

Success rate is 0 percent (0/500)

R2#

In order to see that the traffic hit the intended device, I had to debug icmp traffic on the destination. It definitely gets there.

John

[Kishore Chennupati]

John,

Thanks for the ratings

This is how you do load testing  to test integrity on links. you can generate 30-50mbps easily within seconds.

I generated up to 90 mbps on a fibre link within a few minutes

As I mentioned it doesnt wait for the reply and just bang!!  keeps flooding the link and  if you check the traffic on the link you will be able to see the numbers incrementing in heaps.

HTH

Kishore

[johnlloyd_13]

hi kishore,

this is very cool!! +5

[sassi-zied]

Hi  guys,

Thank you very much for your help and yes john that's exactly what i'm looking for very nice . Thank you for your Help.

Zied