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Fri, Mar 07, 2008 7:46 pm

fping

I needed to determine the IP addresses of all the hosts on a LAN from a Solaris 10 system. I knew that all of them will respond to pings. To do so, I used fping. The fping program will allow you to quickly ping a range of hosts.

fping (Maintained by Thomas Dzubin)

fping is a ping(1) like program which uses the Internet Control Message Protocol (ICMP) echo request to determine if a host is up. fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping. Instead of trying one host until it timeouts or replies, fping will send out a ping packet and move on to the next host in a round-robin fashion. If a host replies, it is noted and removed from the list of hosts to check. If a host does not respond within a certain time limit and/or retry limit it will be considered unreachable.

Unlike ping, fping is meant to be used in scripts and its output is easy to parse.

I downloaded the Intel architecture version of fping for Solaris 10 from Sunfreeware.com and installed it.

# gunzip fping-2.4b2-sol10-intel-local.gz
# pkgadd -d ./fping-2.4b2-sol10-intel-local

The following packages are available:
  1  SMCfping     fping
                  (intel) 2.4b2

Select package(s) you wish to process (or 'all' to process
all packages). (default: all) [?,??,q]: 1

Processing package instance  from 

fping(intel) 2.4b2
ZeroHype Technologies Inc.
Using  as the package base directory.
## Processing package information.
## Processing system information.
   3 package pathnames are already properly installed.
## Verifying disk space requirements.
## Checking for conflicts with packages already installed.
## Checking for setuid/setgid programs.

Installing fping as 

## Installing part 1 of 1.
/usr/local/doc/fping/COPYING
/usr/local/doc/fping/ChangeLog
/usr/local/doc/fping/INSTALL
/usr/local/doc/fping/README
/usr/local/man/man8/fping.8
/usr/local/sbin/fping
[ verifying class  ]

Installation of  was successful.

Program usage information is shown below:

# /usr/local/sbin/fping -h

Usage: /usr/local/sbin/fping [options] [targets...]
   -a         show targets that are alive
   -A         show targets by address
   -b n       amount of ping data to send, in bytes (default 56)
   -B f       set exponential backoff factor to f
   -c n       count of pings to send to each target (default 1)
   -C n       same as -c, report results in verbose format
   -e         show elapsed time on return packets
   -f file    read list of targets from a file ( - means stdin) (only if no -g specified)
   -g         generate target list (only if no -f specified)
                (specify the start and end IP in the target list, or supply a IP netmask)
                (ex. /usr/local/sbin/fping -g 192.168.1.0 192.168.1.255 or /usr/local/sbin/fping -g 192.168.1.0/24)
   -i n       interval between sending ping packets (in millisec) (default 25)
   -l         loop sending pings forever
   -m         ping multiple interfaces on target host
   -n         show targets by name (-d is equivalent)
   -p n       interval between ping packets to one target (in millisec)
                (in looping and counting modes, default 1000)
   -q         quiet (don't show per-target/per-ping results)
   -Q n       same as -q, but show summary every n seconds
   -r n       number of retries (default 3)
   -s         print final stats
   -t n       individual target initial timeout (in millisec) (default 500)
   -u         show targets that are unreachable
   -v         show version
   targets    list of targets to check (if no -f specified)

If I wanted to determine what hosts in the 192.168.1.0 to 192.168.1.255 range exist and can be pinged, I could use the command fping -g 192.168.1.0 192.168.1.255.

# /usr/local/sbin/fping -g 192.168.1.0 192.168.1.255
192.168.1.0 is alive [<- 192.168.1.44]
192.168.1.1 is alive
192.168.1.6 is alive
192.168.1.7 is alive
192.168.1.33 is alive
192.168.1.44 is alive
192.168.1.255 is alive [<- 192.168.1.44]
192.168.1.2 is unreachable
192.168.1.3 is unreachable
192.168.1.4 is unreachable
192.168.1.5 is unreachable
192.168.1.8 is unreachable
192.168.1.9 is unreachable
192.168.1.10 is unreachable
<text snipped>
192.168.1.30 is unreachable
192.168.1.31 is unreachable
192.168.1.32 is unreachable
192.168.1.34 is unreachable
192.168.1.35 is unreachable
<text snipped>
192.168.1.40 is unreachable
192.168.1.41 is unreachable
192.168.1.42 is unreachable
192.168.1.43 is unreachable
192.168.1.45 is unreachable
<text snipped>
192.168.1.252 is unreachable
192.168.1.253 is unreachable
192.168.1.254 is unreachable

If I don't want anything displayed for IP addresses where there was no response, I could use fping -a -g <start address> <end address>, as in the example below.

# /usr/local/sbin/fping -a -g 192.168.1.0 192.168.1.255
192.168.1.0 [<- 192.168.1.44]
192.168.1.1
192.168.1.5
192.168.1.7
192.168.1.37
192.168.1.44
192.168.1.255 [<- 192.168.1.44]

The 192.168.1.0 and 192.168.1.255 addresses are network and broadcast addresses respectively, not hosts responding to ping packets. The 192.168.1.44 address is the address of the system from which I ran the ping command.

[/os/unix/solaris] permanent link

Fri, Mar 07, 2008 7:04 pm

Solaris Release Number

If you need to know the release number for Solaris 10 on a system, then you can check /etc/release. You will see something like the following there:


                        Solaris 10 6/06 s10x_u2wos_09a X86
           Copyright 2006 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                             Assembled 09 June 2006

At this time, the current marketing release is Solaris 10 8/07.

[/os/unix/solaris] permanent link

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