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rhel 4 linux WOL wake on lan

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Operating Systems Linux rhel 4 linux WOL wake on lan
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Old 02-17-2009
rhel 4 linux WOL wake on lan
Hi guys,

Two boxes on the same .23 subnet 192.168.1.x
The box I wanted to shutdown and restart remotely
went down, but didn't come back up when I used ether-wake 00:11:22:etc:etc:
The sleeper has two nics, but only one with cable. I configured both nics to wake on lan using the g option.
The sleeper is an IBM 336

I thought I'd setup the remoteMachine, by using ethertool to set Wake-on to g, which is supposed to mean it'll repond to the MagicPacket.

The thing is, I wasn't able to get a monitor onto the sleeper, or a keyboard,
so I had to pull the power cable to get it backup. Not great you'll agree.

So, with the above information in mind, where would you start in order to figure out why my ether-wake isn't waking the sleeper?

I even modifed the sleepers /etc/init.d directory so that it contains an executable file called wol.sh, but as the sleeper didn't reboot, I'm not sure that even worked. Do I have to do something with chkconfig so that my ethtool tweak is persistent?

Many questions, any help, as always, is very much appreciated.

The reason I'm doing this:
We have an electricity bill we'd like to reduce.
Is using wake on lan a good idea, or something to be avoided.
I'm looking for the voice of experience, to help me stand on the shoulders of giants.
Last edited by Bloke; 02-18-2009 at 08:14 AM..
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LEARN ABOUT MOJAVE

findsmb

FINDSMB(1)							   User Commands							FINDSMB(1)

NAME

       findsmb - list info about machines that respond to SMB name queries on a subnet

SYNOPSIS

       findsmb [subnet broadcast address]

DESCRIPTION

       This perl script is part of the samba(7) suite.

       findsmb is a perl script that prints out several pieces of information about machines on a subnet that respond to SMB name query requests.
       It uses nmblookup(1) and smbclient(1) to obtain this information.

OPTIONS

       -r
	   Controls whether findsmb takes bugs in Windows95 into account when trying to find a Netbios name registered of the remote machine. This
	   option is disabled by default because it is specific to Windows 95 and Windows 95 machines only. If set, nmblookup(1) will be called
	   with -B option.

       subnet broadcast address
	   Without this option, findsmb will probe the subnet of the machine where findsmb(1) is run. This value is passed to nmblookup(1) as part
	   of the -B option.

EXAMPLES

       The output of findsmb lists the following information for all machines that respond to the initial nmblookup for any name: IP address,
       NetBIOS name, Workgroup name, operating system, and SMB server version.

       There will be a '+' in front of the workgroup name for machines that are local master browsers for that workgroup. There will be an '*' in
       front of the workgroup name for machines that are the domain master browser for that workgroup. Machines that are running Windows for
       Workgroups, Windows 95 or Windows 98 will not show any information about the operating system or server version.

       The command with -r option must be run on a system without nmbd(8) running. If nmbd is running on the system, you will only get the IP
       address and the DNS name of the machine. To get proper responses from Windows 95 and Windows 98 machines, the command must be run as root
       and with -r option on a machine without nmbd running.

       For example, running findsmb without -r option set would yield output similar to the following

	   IP ADDR	   NETBIOS NAME   WORKGROUP/OS/VERSION
	   ---------------------------------------------------------------------
	   192.168.35.10   MINESET-TEST1  [DMVENGR]
	   192.168.35.55   LINUXBOX	 *[MYGROUP] [Unix] [Samba 2.0.6]
	   192.168.35.56   HERBNT2	  [HERB-NT]
	   192.168.35.63   GANDALF	  [MVENGR] [Unix] [Samba 2.0.5a for IRIX]
	   192.168.35.65   SAUNA	  [WORKGROUP] [Unix] [Samba 1.9.18p10]
	   192.168.35.71   FROGSTAR	  [ENGR] [Unix] [Samba 2.0.0 for IRIX]
	   192.168.35.78   HERBDHCP1	 +[HERB]
	   192.168.35.88   SCNT2	 +[MVENGR] [Windows NT 4.0] [NT LAN Manager 4.0]
	   192.168.35.93   FROGSTAR-PC	  [MVENGR] [Windows 5.0] [Windows 2000 LAN Manager]
	   192.168.35.97   HERBNT1	 *[HERB-NT] [Windows NT 4.0] [NT LAN Manager 4.0]

VERSION

       This man page is correct for version 3 of the Samba suite.

SEE ALSO

       nmbd(8), smbclient(1), and nmblookup(1)

AUTHOR

       The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open
       Source project similar to the way the Linux kernel is developed.

       The original Samba man pages were written by Karl Auer. The man page sources were converted to YODL format (another excellent piece of Open
       Source software, available at ftp://ftp.icce.rug.nl/pub/unix/) and updated for the Samba 2.0 release by Jeremy Allison. The conversion to
       DocBook for Samba 2.2 was done by Gerald Carter. The conversion to DocBook XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.

Samba 3.5							    06/18/2010								FINDSMB(1)