08-01-2012
Linux as router
Hi,
I have two subnets (172.16.18.0, 192.168.10.0) and a RH linux box. I know linux can act as router, but specifically want to ask if this acts as a router without any route addition on all nodes of two subnets. I mean , I need Not to add anything at each of the subnet nodes (obviously gateway is there) but only add routes in the linux box. I have checked enabling ip forwarding in files /etc/syscntl.conf and /proc/sys/net/ipv4/ip_forward. But that donot make any difference . I am unable to ping the node of 2nd subnet with the node of 1st subnet. My linux box has two nic's with 172.16.18.2 and 192.168.10.2
172.16.18.3 (node s1) ----> 172.16.18.2, 192.168.10.2 <---- 192.168.10.3 (node s2)
Firstly, is it achievable that by only adding routes on linux box I can make two subnets communicate. If yes then what route I need to put on this. (I donot want to add any route on the subnet nodes except the subnet gateway - 172.16.18.2 and 192.168.10.2)
Thanks in advance ,
Dexter
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DE(4) BSD Kernel Interfaces Manual DE(4)
NAME
de -- DECchip 21040, 21140, 21141, 21142, and 21143 PCI Ethernet interface driver
SYNOPSIS
de* at pci? dev ? function ?
Configuration of PHYs may also be necessary. See mii(4).
DESCRIPTION
The de driver supports Ethernet and Fast Ethernet interfaces based on the Digital Equipment Corporation DECchip 21040, 21140, 21141, 21142,
and 21143 model controllers for PCI bus.
21040 10BASE-T and AUI/BNC
21140 10BASE-T and 100BASE-TX
21141 10BASE-T and 100BASE-TX
21142 10BASE-T and 100BASE-TX
21143 10BASE-T and 100BASE-TX
Supported Network Interface Cards (NIC) include, but are not limited to:
Accton EN1207i
Cogent EM100
Asante AsanteFAST
DEC DE435
DEC DE450
DEC DE500
SMC 9332
Znyx NetBlaster ZX340 series (345, 348, 346)
Generally, if the NIC is for PCI bus, and the major controller chip has the DIGITAL logo on it, with one of the model numbers above, the de
driver should recognize and control it. Beware, however, that many NIC manufacturers change the Ethernet controller chip without changing
the product model number, and a physical inspection of the NIC, or a probe of the NIC with a PCI diagnostic tool is the only way to tell if a
real DEC TULIP controller is present.
Multi-port interfaces are typically configured as a PCI-PCI bridge with multiple de instances on the PCI bus on the other side of the bridge.
DEC sold its semiconductor division to Intel. In addition, there are many "knock-offs" of the DEC TULIP Ethernet controller chips; NICs
based on these chips are handled by the tlp(4) driver.
This de driver should not be confused with the NetBSD VAX de driver for the DEC DEUNA/DELUA Ethernet controller for UniBus.
SEE ALSO
ifmedia(4), intro(4), mii(4), pci(4), tlp(4), ifconfig(8)
http://www.adaptec.com/, http://www.asante.com/, http://www.smc.com/, http://www.znyx.com/
HISTORY
The de driver first appeared in NetBSD 1.1
AUTHORS
Matt Thomas <matt@3am-software.com>.
BSD
February 11, 2000 BSD