Configure different specific default routes, nameserver, searchdomains etc. for different networks, bound to different nics

F

freeBSDNew

Hello,

sorry, if my question ist stupid.

I want to configure a freebsd-server, that has different nic's, bound to different networks.

For example

em0
- 10.0.1.0 / 24
- defaultrouter 10.0.1.1
- nameserver 8.8.8.8, a.a.a.a, ...
- search domain lan.home.arpa

em1
- 10.1.1.0 / 24
- defaultrouter 10.1.1.1
- nameserver b.b.b.b, c.c.c.c, ...
- search domain mngmt.home.arpa

em2
- 10.2.1.0 / 24
- defaultrouter 10.2.1.1
- search domain IoT.home.arpa

...

Is ist possible to define different / multiple networks persistent in rc.conf oder resolv.conf or otherwise?

I know, that I can define f. e, one defaultrouter in rc.conf. but what, if i need different routers for different networks, same with searchdomains and nameserver?

Thank you all.
 
If your FreeBSD system is connected to those three LANs directly, wouldn't it already know about the routes? Do you want a DNS to resolve hostnames differently for systems on those LANs or what particular use case are you looking for?

If you are looking for a solution to do multiple uplinks, you could look at something like https://www.quagga.net/
 
freeBSDNew said:
I know, that I can define f. e, one defaultrouter in rc.conf. but what, if i need different routers for different networks
Click to expand...
There's always only one default gateway, that's the definition of a default gateway, it's the one that is used if no other (stricter) static or dynamic routes can be found. I like the definition Cisco uses; gateway of last resort. In other words, it's the gateway that's used if no other routes apply.

Additional static routes can be added like this:
Code: 
static_routes="network1 network2"
route_network1="1.2.3.0/24 10.0.0.1"
route_network2="2.3.4.0/24 10.0.0.2"

Note that directly connected networks will already have an implied route. You can check your routing table with netstat -rn. And don't forget to enable routing by adding gateway_enable="YES" to /etc/rc.conf.
 
Wouldn't this thread be related?
forums.freebsd.org

Multi-homed FreeBSD system default gateway question

Hi Forum, I've got a FreeBSD 9.1 system that is attached to two separate /29's connected to different ISPs. Lets call them NET1/29 and NET2/29. The system does NAT (via pf) for my private IP space behind this system. What I would love to happen is have the system select the default gateway...
forums.freebsd.org forums.freebsd.org
 
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