the understand of ping sweep option.

[syjeon]

I wonder if there is a default incremental value in ping sweep option.

Please attention as following:

6pe01.kcn.ia#ping vrf wonchul

Protocol [ip]:

Target IP address: 169.254.100.98

Repeat count [5]:

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Source address or interface:

Type of service [0]:

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Sweep range of sizes [n]: y

Sweep min size [36]: 1460

Sweep max size [18024]: 1600

Sweep interval [1]:

Type escape sequence to abort.

Sending 705, [1460..1600]-byte ICMP Echos to 169.254.100.98, timeout is 2 seconds:

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

!..

regarding result of above log, the ping was dropped on specific ping payload

segment.

first of all, I know the specific value when ping dropped when I ran ping sweep.

and then I would like to know sweep interval

Is there a default ping sweep incremental value?

[Giuseppe Larosa]

Hello Sung,

Sweep interval [1]:

this sweep interval is actually the step increment see the following:

ping

Protocol [ip]:

Target IP address: 10.99.72.1

Repeat count [5]: 1

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Source address or interface:

Type of service [0]:

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Sweep range of sizes [n]: y

Sweep min size [36]: 1450

Sweep max size [18024]: 1520

Sweep interval [1]: 4

Type escape sequence to abort.

Sending 18, [1450..1520]-byte ICMP Echos to 10.99.72.1, timeout is 2 seconds:

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

Success rate is 100 percent (18/18), round-trip min/avg/max = 12/15/20 ms

if I change to 1

ping

Protocol [ip]:

Target IP address: 10.99.72.1

Repeat count [5]: 1

Datagram size [100]:

Timeout in seconds [2]:

Extended commands [n]: y

Source address or interface:

Type of service [0]:

Set DF bit in IP header? [no]:

Validate reply data? [no]:

Data pattern [0xABCD]:

Loose, Strict, Record, Timestamp, Verbose[none]:

Sweep range of sizes [n]: y

Sweep min size [36]: 1450

Sweep max size [18024]: 1520

Sweep interval [1]:

Type escape sequence to abort.

Sending 71, [1450..1520]-byte ICMP Echos to 10.99.72.1, timeout is 2 seconds:

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

!

Success rate is 100 percent (71/71), round-trip min/avg/max = 12/15/20 ms

notice that number of packets for a given size is still specified by Repeat count

Hope to help

Giuseppe

[rpfinneran]

You could also use the verbose option, which will actually tell you the largest packet that gets through.