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List:       backhand-users
Subject:    Re: [mod_backhand-users] Re: mod_backhand
From:       Theo Schlossnagle <jesus () omniti ! com>
Date:       2001-12-07 21:42:31
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On Sunday, December 2, 2001, at 11:50  AM, Alexander Meis wrote:
> What is the multicast address for 213.70.6.16 if its in 213.70.6.0 ?
> 213.70.6.255 does not work.
> MulticastStats 213.70.6.255:4445

There isn't _a_ multicast address for a given IP.  Multicast doesn't 
work that way.  I would suggest sticking with broadcast addresses until 
you have things working and have good understanding of how multicast 
works (your network needs to be correctly configured for multicast).

The question: "What is the broadcast address for 213.70.6.16 if its in 
213.70.6.0?"
can't be answered without more information.  It really depends on your 
netmask (your subnet size).  If you are on a class C /24 (netmask 
255.255.255.0) then the broadcast would indeed be 213.70.6.255.  
However, if you are on a /27 (netmask 255.255.255.224) then your 
broadcast would be 213.70.6.31.  It is essential that you machines have 
a correct broadcast address and netmask.

If they are all on the same subnet, they should each have the same 
netmask and broadcast address.  Using ifconfig you should be able to 
tell what your broadcast address is -- use that.

--
Theo Schlossnagle
1024D/82844984/95FD 30F1 489E 4613 F22E  491A 7E88 364C 8284 4984
2047R/33131B65/71 F7 95 64 49 76 5D BA  3D 90 B9 9F BE 27 24 E7


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