how to configure network for such a topology?

[Banibrata Dutta]

hi,

attached "topo.gif" is an illustration of my topology (requirement). hostA & hostB are hp-ux 11i boxes. hostC is a Linux box. switch-1 is an unmanaged 3Com 16-port dual-speed 10/100 OfficeConnect switch. switch-2 is a HP NetAccess 10/100 dual-speed 24-port managed switch. switch-3 is something i am not aware of.

addresses A31, B31, C31 are all public class-B IP's which connects the machine to main corporate LAN (and firewall permitting, even to the Internet).
all other addresses are private class-C addresses (192.168.0.x for A21/B21, 192.168.10.x for A22/B22 and 192.168.100.x for A11/B11/C11). Both hostA & hostB have LANconsole enabled on addresses lc1 & lc2 respectively, and connected to switch-1.

could some tell me how to configure hostA & hostB for this topology ? asking because the configuration that i've tried has messed up something real bad -- e.g. if I telnet to LANconsole IP of hostA & hostB separately i can see the GSP hostnames of hostA & hostB, but when i do a "CO" to switch to console, i see that i've entered hostA (i.e. inspite of the fact that i had telnet'd into hostB's LANconsole).

any help is appreciated.

thanks.

[Banibrata Dutta]

forgot to mention that i see Ipkts=Ierrs=0 for a particular interface on hostB, i.e. the one to which IP B11 is bound (towards Switch-1), in result of "netstat -in".

[John Waller]

See my reply to your other thread regarding an IP address duplication in your linux host
file or DNS server.
As far as I understood, when you type CO from your GSP it does not use any networking, it is a physical internal connection to the /dev/console port.

As for setting up your networking, assigning IP addresses to each port is the easy bit, but I find with multiple network cards on separate network classes the problem is setting up the correct routing tables. On your diagram I presume the default router would need to be set to an address on your class B network as that is the only network card which appears to have an external connection. I believe you would have to give your LC's an address of 192.168.100.x so they are on the same network as A11/B11/C11 that way they won't route. As you have not given any details as to other devices on switch-2 I again presume that this is solely for internal communications and again doesn't need to route.

Hope this helps.