[luau] Road Runner

Mark Kellman mark_kellman at hotmail.com
Sun Mar 24 10:31:48 PST 2002 

Thanks Deven. I just don't want to seem like some guy who is sucking the 
life out of this group without trying things on my own.  I've been reading 
the RH Linux Bible since I received it on Tuesday.  I've been researching 
things on my own, and for clarification of what people have been writing.  
Sometimes I understand it more after reading, then again, sometimes it opens 
up a new can of worms.  I just wish I could take a Linux pill or do some 
mind melding to get to the level of those who have helped me.

I always try to help other people understand something.  Maybe this is God's 
way of saying thanks, or the universe's way of passing back some good 
kharma.  All I know is I'm confident I'll be explaining Linux to people as 
the people on this list have for me.  Ideally, it will be to decision makers 
who influence spending $$$$ on bringing in Linux, Linux Systems Admins, 
etc...


>From: Deven Phillips <cytronix at lava.net>
>Reply-To: luau at videl.ics.hawaii.edu
>To: luau at videl.ics.hawaii.edu
>Subject: Re: [luau] Road Runner
>Date: Sun, 24 Mar 2002 08:20:22 -1000
>
>Mark,
>
>	You shouldn't feel stupid. We were all there at some time or another.
>
>Deven Phillips, CISSP
>
>On Sunday 24 March 2002 07:41 am, you wrote:
> > Again, I can't thank all of you enough for your time and effort.  Out of
> > all of this information, what should I do now?  Sorry, but you guys have
> > drilled down quite a bit here and I don't understand most of it and I'm
> > more afaid now of making a mistake and really screwing things up.  I 
>know,
> > stupid newbie!
> >
> >
> > From: Ray Strode <halfline at hawaii.rr.com>
> >
> > >Reply-To: luau at videl.ics.hawaii.edu
> > >To: luau at videl.ics.hawaii.edu
> > >Subject: Re: [luau] Road Runner
> > >Date: Sun, 24 Mar 2002 02:11:54 -1000
> > >
> > >>1.  The kernel is compiled with networking support and recognizes the
> > >>Intel PRO/1000 Ethernet card.  Warren, I doubt a new kernel is needed.
> > >>You mentioned there was a problem with the EEPro100.  This is an
> > >>EtherExpress card.  I do not believe the problem you remember applies
> > >>here, unless an Intel PRO/1000 is the same as an EtherExpress Pro100,
> > >>which I doubt.
> > >
> > >I'm not certain, by I think it's atleast plausible that they use the 
>same
> > >driver.  Remember it's a gigabit card, but it's only being pushed to
> > >10Mb/s.
> > >Chances are at least for that much functionality the same driver would
> > >work (and is probably being autoloaded).
> > >
> > >>But I am not against upgrading to the latest kernel.  I
> > >>just do not believe it is necessary in this case.  Mark, I do 
>recommend
> > >>you install a kernel version that Oracle has tested with.
> > >
> > >I agree with you.
> > >
> > >>2.  DHCP is installed.  It must be, since running it resulted in an 
>error
> > >>message about it being running already.  More about this later.
> > >
> > >Yes that and the fact that his routing table shows him having a gateway
> > > and ifconfig shows him having an IP address :-).  And so when he goes 
>ls
> > > /sbin/dhcpcd
> > >it's there :-)
> > >
> > >>As I see it, there are potentially two problems.  First, DHCP does not
> > >>seem to be running after bootup.
> > >
> > >That's not a problem.  That's a choice.. He only wants it to give him
> > >internet
> > >on demand (when he plugs the cable modem into the already running box).
> > >
> > >>Second, as Patrick suggested, there might be a hardware problem.
> > >
> > >No.. It gets an IP address and Gateway.
> > >
> > >>Assuming the problem is _not_ with hardware, we still need to figure 
>out
> > >>why DHCP is not running, or was killed.
> > >
> > >It is running.
> > >
> > >>Unfortunately, I am not a RedHat user, so I have no idea how RedHat
> > >>
> > >>implemented their network configuration.  So if Warren and Ray could 
>help
> > >>
> > >>me out, I have a few questions.
> > >
> > >Okay, I can prolly help ya.
> > >
> > >>Anyway, this is how Debian configures the network.  How does RedHat
> > >>configure the interface for DHCP?
> > >
> > >/etc/sysconfig/network-scripts/ifcfg-eth0
> > >sets some environment variables that /etc/init.d/network
> > >script uses to know what to do.
> > >
> > >>Ray, I think it is better to determine
> > >>why RedHat is not running DHCP automatically, rather than running
> > >>/sbin/dhcpcd.
> > >
> > >He doesn't wan't it to run automatically.  He wants it to run on 
>demand.
> > >You are right though.  It's better to use
> > >/etc/init.d/network
> > >then /sbin/dhcpcd and friends
> > >
> > >>Since we are talking about RR, there is no reason to
> > >>manually startup the network.
> > >
> > >Yes there is.  He normally keeps his cable modem plugged into his other
> > >computer.
> > >
> > >>1.  Mark, you need to login as root from your KDE environment to run 
>all
> > >>of the commands that everyone is asking you to run.  The reason you 
>got
> > >>an error when you typed 'ifconfig' was because you were not root.  
>Ray,
> > >>Warren, correct me if I am wrong, but doesn't RedHat include /sbin in 
>the
> > >>path when you are logged in as root?
> > >
> > >It does, but depending on how super user priveleges are gained, the
> > >exisiting environment may be inherited, so the path and such may be 
>still
> > >set to the previous user.
> > >
> > >>Another benefit of using a terminal application instead of Ctrl-Alt-F7 
>is
> > >>that you can copy and paste the output of those programs into an 
>editor.
> > >>The terminal app usually has a scroll bar, so if the output scrolls 
>off
> > >>the window, just move the scroll bar up and copy the text.
> > >
> > >That's true (except Ctrl-Alt-F7 normally goes back to X, not to a 
>console)
> > >
> > >>2.  The dmesg output suggests that the kernel already recognized the
> > >>Ethernet card.  This means the device driver was compiled into the
> > >> kernel. So there is no need to worry about loadable modules.  If no 
>one
> > >> knows what this is, it doesn't matter.  It is not important.
> > >
> > >hrmmmm........interesting.....I never even thought of that.  Actually,
> > >dmesg
> > >output isn't strictly boot messages is it?  I mean it updates itself
> > >whenever
> > >the kernel ring buffers are written too, yes? (I'm not sure) .  If you
> > >notice
> > >the ethernet card driver loading is the absolute last thing on the 
>list.
> > >That
> > >suggests to me that it may have happened sometime after bootup.  (Like
> > >when the module was loaded after dhcpcd was ran).
> > >
> > >>3.  Concerning the contents of the /etc/resolv.conf file.  I think 
>having
> > >>only one IP address listed is a mistake.  I had problems where the 
>first
> > >>DNS server on the list was down.  If there was no backup, I would have
> > >>been locked out of the Internet.  The fact that there is only one 
>entry
> > >>could mean something went wrong.  If one entry is correct, I think RR
> > >>mis-configured their system.  Someone should phone them up and 
>complain.
> > >
> > >Well one nameserver is good enough to get things working temporarily is
> > >all I meant.   Road Runner has quite a few nameservers actually.
> > >
> > >>4.  Concerning re-installing DHCP, I only suggested this as a quick 
>fix.
> > >>We could try to figure out what went wrong with DHCP.  But it would be 
>a
> > >>lot easier to just uninstall the program, then install it again and go
> > >>through the configuration procedure.
> > >
> > >I could be wrong, but in this case I dont' think that would help at 
>all.
> > >
> > >--Ray
> > >
> > >
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