Date: Wed, 26 Jul 2000 14:43:30 -0600 (MDT) From: Nick Rogness <nick@rapidnet.com> To: Albert Chin-A-Young <china@thewrittenword.com> Cc: freebsd-net@freebsd.org Subject: Re: Routing help Message-ID: <Pine.BSF.4.21.0007261426190.34597-100000@rapidnet.com> In-Reply-To: <20000726013652.B8690@postal.thewrittenword.com>
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On Wed, 26 Jul 2000, Albert Chin-A-Young wrote: > I have a FreeBSD/x86 3.4 box configured with two NICs, both connected > to separate networks. I have one default route. How would I do the > following: > 1. Respond to all packets coming from NIC #1 through NIC #1 and > respond to all packages coming from NIC #2 through NIC #2. > Because I have a default route, all packages return through > only one NIC. Return from where? Are the hosts on the networks connected pointed at the FreeBSD as the default gateway? I'm not quite clear on what you mean but I would recommend some type of Interior routing protocol, like RIP or OSPF to handle your routing needs. Static routes can be a pain to manage after a while. > 2. If NIC #1 goes down and the default route is set to NIC #1, > no packets can go through on NIC #2 (only for that subnet). > Is it possible to add a second default route so when the > network on NIC #1 goes down packets are sent through > NIC #2 (this disturbs connections already on NIC #1 but > that's OK). > This discussion has come up before. You can't (yet) add the same route to a netblock that is already in the routing table. However, here is a possible solution for 2 default gateways (1 as primary and 1 as a backup): route add -net 0.0.0.0 -netmask 128.0.0.0 XXX.XXX.XXX.XXX route add -net 128.0.0.0 -netmask 128.0.0.0 XXX.XXX.XXX.XXX route add -net 0.0.0.0 -netmask 0.0.0.0 BBB.BBB.BBB.BBB Where XXX.XXX.XXX.XXX is your main gateway (primary) and BBB.BBB.BBB.BBB is your backup gateway IP. Nick Rogness - Drive defensively. Buy a tank. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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