At 12:25 PM 8/14/2004 +0800, Chris Lee wrote:
Dear Ray,
Many thanks for your details reply.
Let discuss the NAT? part first.
> >Ethernet0 10.0.108.254/255.255.255.0 > > 203.198.77.78/255.255.240 > > > >Ethernet1 172.23.76.154/255.255.255.252
I try to use uClibc 2.2RC1, but I don't know how to setup the eth0 (WAN) and eth1 (LAN) for about settings at /etc/network/interfaces. Assume leaf's eth0 is CISCO Ehernet1 and eth1 is Ethernet0
auto eth0 iface eth0 inet static address 172.23.76.15_ ??
presumably .154, if it is to replace the Cisco.
netmask 255.255.255.252
gateway 172.23.76.15_ ??
Well, since the netmask is /30, the only other available host address is .153 (.162 is the network address, .155 the broadcast address). So IF (big IF) this netwotk contains your default gateway, that must be its address.
But check the Cisco's routing table. As I recall, it had a VPN interface of some sort, and the default gateway listed in the routing table was on that interface, not on Ethernet1. So as I (and others) have said before, you have to find out from your ISP what is going on with that interface.
autho eth1
That;s a typo. Should read "auto".
address 203.198.77.7_ ??
Presumably .78, if the intent is for this router to replace the CIsco.
netmask 255.255.255.240
gateway 203.198.77.7_ ??
This is your internal interface, so it has no gateway entry. A gateway is a default route ... where the router should direct any traffic that it does not have a direct route to. Only one interface has a gateway entry under normal circumstances.
Any Hints?
If you plan also to have the router handle (route or NAT) the 10.0.108.254/255.255.255.0 network, you'll net an eth0 entry for that as well. Look in the Shorewall guides for help in assigning multiple IP addresses to an interface.
Regards, Chris Lee
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