Re: how to attach class C net to an interface?
I have a server with one interface and many virtual web hosts. I have been given class C network to use for the virtual web hosts and jails on the server. How to i tell the interface that all addresses of some A1.A2.A3.A4 0xFF00 network belong to the interface. Do i specify 250-some aliases? Or there is a better way? Unfortunately, there is no built-in solution I know of to add aliases in bulk - you need to issue individual ifconfig commands. As such, you can do it on the command-line using a loop such as this: for (( foo = 1; foo 255; foo++ )); \ do ifconfig fxp1 alias 172.16.100.$foo netmask 0x; \ done This will add the aliases 172.16.100.1 through 172.16.100.254 to the fxp1 interface. All you need to do is change the command to reflect your requirements for the network number and interface name, and you should be good to go. You can add this command into /etc/rc.local to have it run at startup. Thank you for the scrip. I will then asign a single main ip to the interface in rc.conf and then run this script from /usr/local/etc/rc.d because i think rc.local is merged after each cvp/buildworld/installworld/mergmaster, so /usr/local/etc/rc.d is a safer place to to keep it. Right or not? The other question, will assigning 200+ ip addresses degrade tcp/ip perfomance noticeably? How to i spell noticably or noticaebly? :) Regards, Artem ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: how to attach class C net to an interface?
On Jun 4, 2004, at 00:36, Artem Koutchine wrote: The other question, will assigning 200+ ip addresses degrade tcp/ip perfomance noticeably? It is a common practice, and I haven't heard of problems with it. Remember that the same-subnet mask is /32 regardless of what the primary address mask is. How to i spell noticably or noticaebly? :) Apparently you spell it both ways. ;) Correct is noticeably, as in English has noticeably inconsistent rules for both spelling and pronunciation. KeS ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: how to attach class C net to an interface?
On Fri, Jun 04, 2004 at 11:36:10AM +0400, Artem Koutchine wrote:
for (( foo = 1; foo 255; foo++ )); \
do ifconfig fxp1 alias 172.16.100.$foo netmask 0x; \
done
Thank you for the scrip. I will then asign a single main ip to the interface
in rc.conf and then run this script from /usr/local/etc/rc.d because i think
rc.local is merged after each cvp/buildworld/installworld/mergmaster,
so /usr/local/etc/rc.d is a safer place to to keep it. Right or not?
Probably the best place to put this is in a file named 'start_if.fxp1'
assuming fxp1 is the interface you want all this to happen to. That
will be read into /etc/rc.network and executed by this bit of code:
for ifn in ${network_interfaces}; do
if [ -r /etc/start_if.${ifn} ]; then
. /etc/start_if.${ifn}
eval showstat_$ifn=1
fi
This effectively lets you introduce custom bits of shell script into
the standard /etc/rc.network script without having to worry about
keeping that script patched and in synch across system updates.
There isn't a similar 'stop_if.fxp1' facility -- just disabling the
interface usually does the trick.
The other question, will assigning 200+ ip addresses degrade tcp/ip
perfomance noticeably?
Hard to say. Probably not a huge amount, but it will depend on your
hardware amongst other things. The only way to know for sure is to
run some tests yourself.
How to i spell noticably or noticaebly? :)
noticeably
Cheers,
Matthew
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Re: how to attach class C net to an interface?
Artem Koutchine wrote: Hi! I have a server with one interface and many virtual web hosts. I have been given class C network to use for the virtual web hosts and jails on the server. How to i tell the interface that all addresses of some A1.A2.A3.A4 0xFF00 network belong to the interface. Do i specify 250-some aliases? Or there is a better way? Hi Artem! Unfortunately, there is no built-in solution I know of to add aliases in bulk - you need to issue individual ifconfig commands. As such, you can do it on the command-line using a loop such as this: for (( foo = 1; foo 255; foo++ )); \ do ifconfig fxp1 alias 172.16.100.$foo netmask 0x; \ done This will add the aliases 172.16.100.1 through 172.16.100.254 to the fxp1 interface. All you need to do is change the command to reflect your requirements for the network number and interface name, and you should be good to go. You can add this command into /etc/rc.local to have it run at startup. -- Thanks, -David Fuchs BCIS ([EMAIL PROTECTED]) WWW:http://www.davidfuchs.ca/ MSN:[EMAIL PROTECTED] PGP:http://www.davidfuchs.ca/aboutme/433EEC91.pgp ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
