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Re: [K12OSN] LTSP with 3 nics



On 4 Jun 2002, Caleb wrote:

> Hi guys,
> 
> I think I'm having a network bottleneck with my internal traffic due to
> having 60 terminals on one server nic. The server has a gigabit nic but
> unfortunately people here won't let me purchase a gigabit module for my
> switch. SO I'm having to improvise. I just downloaded LTSP 2.1.0 and am
> prepared to do a fresh install. I want to add a third nic in my server
> so I will have 2 nics to use for my terminals (inside traffic)and one
> for outside traffic. How do I go about getting this to work? Is there a
> way I can make these two nics appear as one? Or can I maybe setup my
> DHCPD.conf to allow half my terminals on one nic and the other half on
> my other nic? Anyone feel free to input! 

Probably a better approach is to separate your LAN into
sub-segments, each serviced by a different NIC. -- subnetting 
calculator tool at: http://clone.iwaynet.net/cgi-bin/ipcalc.cgi

eth0 - 192.160.0.254 - netmask 255.255.255.224 (32 IP's)
eth1 -- preserve the existing external route approach
eth2 - 192.168.0.222 - netmask 255.255.255.224 (32 IP's)
eth3 - 192.168.0.190 - netmask 255.255.255.224 (32 IP's)
eth4 - 192.168.0.158 - netmask 255.255.255.224 (32 IP's)
eth5 - 192.168.0.126 - netmask 255.255.255.224 (32 IP's)
eth6 - 192.168.0.94  - netmask 255.255.255.224 (32 IP's)
eth7 - 192.168.0.62  - netmask 255.255.255.224 (32 IP's)
eth8 - 192.168.0.30  - netmask 255.255.255.224 (32 IP's)
   (there are Intel and Adaptec PCI NIC's available with 4 
NICS on a single slot --)

which allocates the whole 256 IP's into 8 equal subnets of 32 
IP's each.

Edit the available assignment ranges in the /etc/dhcpd.conf to 
exclude the network, and broadcast IP's; 

Point each NIC at a 24 or 32 port switch, and and it should
'just work' -- this moves the load from the network onto the
server -- more ram, faster processor, and really, more servers
in the back end is the solution there.  But we are getting 
beyone the scope of most K-12 LTSP installations.

-- Russ Herrold





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