Re: DHCP Networking in YDL 2.0 (NOT!)

Subject: Re: DHCP Networking in YDL 2.0 (NOT!)
From: Ken Schweigert (ken@byte-productions.com)
Date: Thu Nov 08 2001 - 14:41:36 MST

I, personally, haven't had any problems with pump. I'm using it on a NAT
box that gets it's IP from a cable modem and has been working perfectly.
(YDL 2.0)

A couple of things I would recommend, please forgive if this is TOO
obvious, but sometimes ...

1) make sure pump is actually monitoring the interface; 'ps -ax|grep pump'
    it should say '/sbin/pump -i eth0' or something similar
2) get a status report from pump; '/sbin/pump -i eth0 --status'
    you should see the IP, gateway, netmask & lease info that it is getting from
    the server.
3) ping the IP that gets assigned and the gateway
4) make sure the only entries in your /etc/sysconfig/network-scripts/ifcfg-eth0
    are :
      BOOTPROTO="DHCP"
      DEVICE=eth0
      ONBOOT="yes"
    Everything else gets assigned from the dhcp server.
5) lastly, make sure there aren't any other devices in the network that are
    acting as, or have embedded, dhcp servers. I have a second cable modem
    that has it's IP hard-coded in and didn't realize it acted as a dhcp server
    to the network. I thought it was only a gateway device.

Hope this helps. 

-- 
-Ken Schweigert, Aspiring Network Administrator
Byte Productions, LLC
http://www.byte-productions.com

On Wed, Nov 07, 2001 at 10:32:16PM -0800, Mark Jaffe wrote:
> On 11/7/01 8:18 PM, "Timothy A. Seufert" <tas@mindspring.com> wrote:
> 
> > At 5:49 PM -0800 11/7/01, Mark Jaffe wrote:
> >> Once again, I beseech all members for a solution to the dilemma I face.
> >> When connecting to the internet through the AirPort base station ethernet
> >> link, YDL obtains a useless DHCP address that will not connect to any
> >> known IP address. All my MacOS machines which share this base-station
> >> either wireless or through the hub have functional connections, so this is
> >> a shortcoming ONLY of YDL. I am getting no help from TerraSoft on this.
> >> Anyone care to offer a hint?
> > 
> > Hard to say without knowing more information about what's going on.
> > Can other computers on your LAN ping the YDL box?  Can it ping them?
> > Is its IP address coming up in the range you'd expect it to?
> 
> Answer: NO, it is as if it is not on the network at all. But the address it
> gets is definitely valid.
>  
> > 
> > One thing to try: RedHat based distributions (YDL included, at least
> > as of 2.0) tend to default to using the "pump" DHCP client.  I've
> > personally had nothing but trouble with pump, and have had good luck
> > deinstalling it ("rpm -e pump") so the system will fall back on the
> > alternative "dhcpcd" client when attempting to configure a network
> > interface with DHCP.  Make sure dhcpcd is installed before doing this
> > ("rpm -q dhcpcd"), and install it from the CD if necessary.
> 
> I had to fight a little to get pump to do anything; now I learn it is not
> even expected to work. No wonder all it does is complain "Operation failed."
> 
> Mark
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