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Old 01-24-2008, 06:17 PM   #1
mahmoud
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IP Address Limitation on one interface?

Hi everyone a quick question my boss asked me
how many ip address can a network card have
 
Old 01-24-2008, 06:19 PM   #2
jamesj629
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just the one I think
 
Old 01-24-2008, 07:50 PM   #3
Uncle_Theodore
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No, a network card can have multiple IP addresses just fine if you use aliases.
eth0, eth0:0, eth0:1, eth0:2,...
Exactly how many of them you can create I don't know. It used to be 256 around Linux 2.0.XX Then, there was /proc/sys/net/core/net_aliax_max, but now I don't find it anymore...
Last edited by Uncle_Theodore; 01-24-2008 at 08:40 PM.
 
Old 01-24-2008, 10:36 PM   #4
farslayer
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Heres an example using Debian..

http://www.servepath.com/support/deb...figuration.htm

other distros can do the same thing albeit differently depending on how their configuration files are setup.. Redhat for instance uses a separate file for each subinterface.

http://www.servepath.com/support/redhat_ip_config.htm


And I've never even thought about a limit.. guess I never had a need to add that many addresses to a single interface.
Last edited by farslayer; 01-24-2008 at 10:37 PM.
 
Old 01-25-2008, 10:35 AM   #5
mahmoud
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How many can it take
 
Old 01-25-2008, 01:44 PM   #6
trickykid
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Quote:
Originally Posted by mahmoud View Post
How many can it take
How ever many you want. I've dealt with machines with over 600 at one time. I don't believe there is a limit any longer.
 
Old 01-25-2008, 02:52 PM   #7
popowich
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The most I have tried is a /24 worth. No problems there.

-Raymond
 
Old 01-28-2008, 10:58 AM   #8
mahmoud
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Sorry To be push but wont the ip address be conflicting if you use up all the ip addresses
 
Old 01-28-2008, 01:26 PM   #9
trickykid
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Quote:
Originally Posted by mahmoud View Post
Sorry To be push but wont the ip address be conflicting if you use up all the ip addresses
What do you mean by "use up all the ip addresses"?
 
Old 01-29-2008, 02:58 AM   #10
mahmoud
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dont worry about it anymore will the answer today from my boss
thanks anyway
 
  


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