SUMMARY: maximum number of IPs aliased to one interface

From: Rob Helmer <robert_at_namodn.com>
Date: Tue Jun 04 2002 - 20:49:02 EDT
Hello,


Answer seems to be : 255 by default, can edit /etc/system and 
modify ip_addrs_per_if ( or use ndd ) and set to a max of
8192.

Heard this from some friends of mine :

Performance really starts to suck at little below 200 ( I guess the 
traditional Unix kernel way of traversing all interface on
the box is to go through a linked list, extra points to 
anyone who can confirm that this is why Solaris gets slower
as this gets higher ). This is true even of 200 seperate
network interface cards, not really an aliasing issue perse.



Thanks to everyone who responded!
Rob Helmer



On Tue, Jun 04, 2002 at 01:21:03PM -0700, Rob Helmer wrote:
> Hello,
> 
> 
> Does anyone know what the maximum number of IP addresses that I
> can alias to one network interface under Solaris is?
> 
> I'm using Solaris 7.
> 
> 
> 
> Thanks,
> Rob Helmer
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> sunmanagers@sunmanagers.org
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Received on Tue Jun 4 20:44:52 2002

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