Kirk Davis wrote:
Julian Elischer wrote:
in -current you can implement a routing table via FWD and tables.
in 6.x you need to specify the next hop. and an more explicit rule.
Is there any information floating around on how to do this in current
using the FWD rules and tables? Any pointer on where to look.
man ipfw on -current
basically you can implement alternate routing tables..
ipfw table 1 add 0.0.0.0/0 4.5.6.7 # default route for table 1
ipfw table 1 add 2.3.4.0/24 5.4.3.2 # but not for packets to 2.3.4.x
ipfw table 2 add 0.0.0.0/0 7.6.5.4 #default route for table 2
ipfw table 2 add 2.3.4.0/24 6.5.4.3 # but differnet route for packets to 2.3.4.x
ipfw add 100 allow ip from 1.2.3.0/24 to any out
ipfw add 110 fwd tablearg ip from 1.2.4.0/24 to table(1) out
ipfw add 120 fwd tablearg ip from 1.2.5.0/24 to table(2) out
Right now I am using fwd rules on our BGP router (Quagga & FreeBSD
6.2) to force one of our subnets out a particular interface and avoid
the routing table but I would prefer to do it more like a dual routing
table where I can make more routing decisions than just forcing all
packets from that subnet out the interface. I could test it on one of
our current boxes.
julian
---- Kirk
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