inet<---eth1[LinuxBox_1]eth0<---e0[LinuxBox_2] : LinuxBox_2 hv no inet connection?

[andrea_44]

Internet<---eth1[LinuxBox_1]eth0<---eth0[LinuxBox_2]

I am attempting configure LinuxBox_2 to connect to the Internet.

LinuxBox_2 - eth0 : 169.254.4.218
LinuxBox_2 - gw : 169.254.4.217

LinuxBox_1 - eth0 : 169.254.4.217
LinuxBox_1 - eth1 : 172.19.97.127
LinuxBox_1 - gw : 172.19.96.1

LinuxBox_1 - Kernel IP routing table(route -n)
Destination___Gateway____Genmask_______Flags__Ifac e
172.19.96.0__ 0.0.0.0______255.255.254.0__U______eth1
169.254.0.0___0.0.0.0_____255.255.0.0_____U______e th0
0.0.0.0_______172.19.96.1_0.0.0.0_________UG_____e th1

LinuxBox_2 - Kernel IP routing table:
Destination__Gateway________Genmask______Flags__If ace
169.254.0.0__0.0.0.0________255.255.0.0_____U_____ _eth0
0.0.0.0______169.254.4.217__0.0.0.0_________UG____ __eth0

On LinuxBox_2, I am unable to ping the LinuxBox_1 gateway (172.19.96.1) and LinuxBox_1 eth1 (172.19.97.127).
"From 169.254.4.217 Dest Host Unreachable".

But I could ping LinuxBox_1 eth0 (169.254.4.217).

Could anyone shed some light on this matter,
Your help will be greatly apprecaited!

Many Thx,

Andrea

[framp]

That's a very detailed but uncommon description of your configuration and helps a lot to understand your environment.

I see two possible reasons for this problem:

1) no forwarding enabled (cat /proc/sys/net/ipv4/ip_forward yshould return 1)
2) firewall on linux_box1 (iptables -L -nv should give you details)

[cuervo73]

Andrea,

a couple of dumb questions:

1. what kind of CAT5 cable connection do you have there between computer 1 and computer 2? I saw no hub nor switch in your diagram.

you should have either:
a) a crossover cable between the NIC cards on each
b) a pair of straight thru cables connected from the NICs to a switch or hub

2. look at the rear of the two computers at the external plate of each NIC. Most decent NICs have 2-4 LEDS there. One should be the link LED and it should be lit on both NICs when the CAT5 cables are connected. Are they?

cuervo