Re: [SLE] Two NICs

From: Don Parris (webdev_at_matheteuo.org)
Date: 11/07/04

  • Next message: Patrick Shanahan: "Re: [SLE] Empty Trash" 
    To: suse-linux-e@suse.com
Date: Sat, 6 Nov 2004 19:28:36 -0500

    On Saturday 06 November 2004 17:19, Vince Littler wrote:
    > On Saturday 06 November 2004 8:11 pm, Don Parris wrote:
    > > I'm trying to setup two NICs on one box, and seem to be having trouble
    > > eaching the rest of the LAN using eth1. I use eth0 for the DSL
    > > connection.
    > >
    > > ifconfig reports:
    > > dsl0 Link encap:Point-to-Point Protocol
    > > inet addr:192.168.99.1 P-t-P:192.168.99.99
    > > Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492
    > > Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    > > TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
    > > collisions:0 txqueuelen:3
    > > RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
    > >
    > > eth0 Link encap:Ethernet HWaddr 00:0A:E6:68:3E:24
    > > inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
    > > inet6 addr: fe80::20a:e6ff:fe68:3e24/64 Scope:Link
    > > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    > > RX packets:104 errors:0 dropped:0 overruns:0 frame:0
    > > TX packets:175 errors:0 dropped:0 overruns:0 carrier:0
    > > collisions:0 txqueuelen:1000
    > > RX bytes:34154 (33.3 Kb) TX bytes:10841 (10.5 Kb)
    > > Interrupt:5 Base address:0xc400
    > >
    > > eth1 Link encap:Ethernet HWaddr 00:01:02:73:CA:CF
    > > inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
    > > inet6 addr: fe80::201:2ff:fe73:cacf/64 Scope:Link
    > > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    > > RX packets:0 errors:0 dropped:0 overruns:0 frame:0
    > > TX packets:12 errors:0 dropped:0 overruns:0 carrier:5
    > > collisions:0 txqueuelen:1000
    > > RX bytes:0 (0.0 b) TX bytes:936 (936.0 b)
    > > Interrupt:3 Base address:0xc000
    > >
    > > ping -I 192.168.1.2 192.168.1.14 produces "host unreachable".
    > >
    > > I've tried 2 different NICs. I suspect the problem is not dead NICs but
    > > perhaps something I need to do differently or additionally. I've setup
    > > the hosts file with both NICs listed (and tried it with only eth1's
    > > address listed - 192.168.1.2) I'm not quite sure what else to do.
    > >
    > > Thanks,
    > > Don
    > >
    > > --
    > > DC Parris GNU Evangelist
    > > http://matheteuo.org/
    > > http://chaddb.sourceforge.net/
    > > "Free software is like God's love - you can share it with
    > > anyone anytime anywhere!"
    >
    > Hi Don
    >
    > Stan Glasoe has picked up the issue about the subnets. I'll chip in with
    > this:
    >
    > If you have 2 NICS, you either DO or DON'T want them on the same subnet
    > according to what you want to do, there is no option. In your case, it
    > seems that you want to use eth1 for your own LAN and eth0/dsl0 as your
    > external connection, in which case [no option], eth0 and eth1 must be on
    > different subnets, to provide separation of internal and external traffic.
    >
    > I am not familiar with how to configure the eth0/dsl0 interface, because I
    > use a router, but there should be no difference between single machine use
    > configuration and configuration for the single machine to act as router for
    > the whole LAN. So, leave aside eth1 for the moment, just get eth0/dsl0
    > working as a standalone internet setup on the one machine.
    >
    If the DSL were not working with eth0, you wouldn't likely be able to post to
    the list until tomorrow night. :) eth0 is fine, I just need eth1 working
    with the internal LAN. So I'll finish working with Stan's message and report
    back in a bit. I didn't think about using different subnets.

    >
    > When this works, go with what Stan says about separate subnets, and work on
    > eth1. The machine with the 2 interfaces is then a router, which must have
    > IP forwarding turned on [YaST2 -> Network Devices -> Network Card -> Change
    > [already configured devices] -> edit -> routing -> enable IP forwarding].
    >
    > After this, you'll need to set up your LAN clients to access the internet,
    > which means pointing them at your machine as gateway or router and sorting
    > out DNS.
    >
    Opening the LAN to internet access will definitely come a little later.
    >

    Don 

    -- 
DC Parris GNU Evangelist
http://matheteuo.org/
http://chaddb.sourceforge.net/
"Free software is like God's love - you can share it with 
anyone anytime anywhere!"
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  • Next message: Patrick Shanahan: "Re: [SLE] Empty Trash"

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