Red Hat

hi,

having an issue on a class C network with trying to get a redhat diskless setup going. I am using oracle enterprise 5, which is RHEL 5.3 i believe.

here is the scenario:
sun sparc m4k that i am planning on making the red hat boxes boot off after i get the network issue fixed.

each machine has 3 interfaces, so i think this is where i may be messing up

in the meantime, i have 2 ip's. 201.36.59.231 which is the sun box and 201.36.59.232 which is the red hat machine. Both have /24 subnet masks and the netstat -rn output appears to be correct but I am having trouble with them pinging one another so obviously they are not correct. these go through a cisco switch. I have not tried a crossover cable as it would have to be too long. :doh:

netstat -rn shows the default gateway being the public IP and i can talk to any other machine i need to via this interface. I do not have a default gateway for the 2 interfaces that i am trying to get to talk to one another. I didnt think that i needed one since they are on the same network and if anything i thought they could broadcast and figure it out. Its technically only 1 hop, so hence why i thought that. EDIT: i failed to mention that the switchports on the cisco device are all on the same vlan. Do i need something else on the cisco side perhaps?

do i set a default gateway? and if so using the route command when i do set a gateway it tries to takeover as the default for all the interfaces so then the other traffic tries going through that interface.

the syntax i was using is:
route add -net 201.36.59.0 netmask 255.255.255.0 which reflects properly and executes fine until i add the gateway.

can one of you tell me what i am missing?

thanks

I don't believe you can boot off of a routed address. I think you need a flat subnet, which it appears you have.

Please see if you have the firewall configured on the RHEL/OEL box by doing the following:

Code:

service iptables status

Instead of status, issue a stop if you need to test without the firewall on the local machine.

Hi Mark

the firewall is turned off. That was the first thing i did

i was looking at turning off the iptables as well. Looks like for a private network 192.168.0.0 there is an entry.

---------- Post updated 03-10-11 at 03:39 AM ---------- Previous update was 03-09-11 at 05:11 PM ----------

i am by no means a cisco dude. Found the problem. I didnt know that the switch was a layer 3 switch and also didnt realize that the vlans had a gateway setup. Input the gateway, and walaa...we are talking.

Good to hear (Btw, iptables IS the firewall).