Using multiple routing tables and rc.conf
Robert Blacquiere
freebsd-net at blacquiere.nl
Tue May 26 12:46:01 UTC 2009
Hi,
I'me testing a network setup using multiple routing tables. I want to
use this to setup different gateways. Some basic design is this:
The system has two different uplinks (fast and slow for backup).
And somewhere on the internet a colo with a full internet address range.
I have setup the system with 2 giftunnels and use ospf over these for
the internet range. This seems to be working.
I want this to be configured with settings in rc.conf but failed to find
the magic to do things like:
setfib 0 ifconfig gif0 create 172.16.0.1 172.16.0.2 netmask
255.255.255.255 tunnel $extern_fast $colo
I know setfib is not needed for the default routing table.
setfib 1 ifconfig gif1 create 172.16.0.3 172.16.0.4 netmask
255.255.255.255 tunnel $extern_slow $colo
and the routes:
route add default $gateway_fast
setfib 1 route add default $gateway_slow
and use a third routing table for the ospf routing and pf to route
traffic using the ospf announced routes.
How would this be fitted in the rc.conf?
for normal giftunnels i would use some thing like:
gif_interfaces="gif0 gif1"
gifconfig_gif0="$extern_fast $colo"
ifconfig_gif0="inet 172.16.0.1 172.16.0.2 netmask 255.255.255.255"
gifconfig_gif1="$extern_slow $colo"
ifconfig_gif1="inet 172.16.0.3 172.16.0.4 netmask 255.255.255.255"
But this won't include the setfib. For jails there is a setfib command
using jail_<jname>_fib. I would like some thing like that also for
routes, interfaces and deamons to start.
I know i could set these things in a rc.local but would rather use
rc.conf for configuration. Did any of you guys done something like this?
Regards
Robert
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