|William H. Magill on 14 Aug 2005 21:12:40 -0000|
On 12 Aug, 2005, at 21:59, Douglas Lentz intoned:
Hi all. Back on 7/21 Luke, David and Christopher were good enough to respond to me re my problems with getting my Verizon DSL connection (my ISP is dca.net) up. Unfortunately, just when they responded to me I had a series of exams at Drexel, and was not able to implement their suggestions then. I have just gotten back to the problem now.
The 5515 is a MODEM, not a router! It does not do NAT and does not do DHCP.
It happens to have a Web interface (primarily for firmware updates). This answers on a different port than a ping. Very few Modems or Hubs are smart enough to answer a ping.
You can communicate with this Web GUI via your browser and the address 10.0.0.2
The 5515 should work out of the box with no configuration necessary. It really is just a dumb modem.
The MAC address of your RH9 box needs to be registered with DCAnet to allow it to get the DHCP address from their server. One MAC address = one IP address. Multiple machines need to be registered independently or else you need to run and configure your own Router and or other NAT server.
You say "I cannot establish connectivity with the ADSL modem" -- what does that statement mean? What do the indicator lights show... are you getting "sync" from the DSL line?
The front pannel lights which should be lit: PWR and LINK.
The LINK light will flash during the power-up sequence. Once the modem establishes a "sync" condition with the DSLAM in the CO, this light will go on solid. If it does NOT stay on solid, there is a line problem, most likely the DSLAM needs to be reset. Call DCA, and they can do it while you are on the phone with them.
The LAN light will light up when there is a valid Ethernet connection plugged into the modem. If the light on your Interface card (NIC) does not come on or the light on the Modem does not come on, you do not have a connection in one direction or another. This is true of any two Ethernet connections. You may have a bad cable NIC card or need a "crossover" cable. Note that the 5515 does have a 10/100 interface.
The Linux installation instructions are on page 23, Section C. Custom Installation Instructions.
My ifcfg-eth0 file is
They describe the following settings for ifcfg.
DEVICE=eth0 ONBOOT=yes BOOTPROTO=static IPADDR=10.0.0.3 NETMASK=255.255.255.0 NETWORK=10.0.0.2
Run: /sbin/ifdown eth0 /sbin/ifup eth0
Step 2: Plug the cable from the modem directly into the PC. Try using your browser to reach 10.0.0.2. If that doesn't work, get a "reversed" or "crossover" cable and plug that in (they are usually red). [Otherwise just leave the hub in place. The setup really shouldn't care.]
Reconfigure your interface for DHCP. The two configs are NOT compatible.
Note that you will not be able to contact the modem on the 10.0 address once you get you DHCP interface up unless you get into some serious network configuration games.
If your various lights come on as expected, and the MAC address is correctly registered with DCAnet (typos happen), then the box should simply "come up." There is nothing particularly fancy about your setup. If it does not, the problem is most likely with the DHCP configuration on your RH box.
BTW: The Folks at DCAnet are pretty good with Linux configurations.
I'm not using RH, but FreeBSD and OSX with DCAnet's new "static" DHCP addresses. (I also still have one REAL static IP address, but that's another story.)
T.T.F.N. William H. Magill # Beige G3 [Rev A motherboard - 300 MHz 768 Meg] OS X 10.2.8 # Flat-panel iMac (2.1) [800MHz - Super Drive - 768 Meg] OS X 10.4.1 # PWS433a [Alpha 21164 Rev 7.2 (EV56)- 64 Meg] Tru64 5.1a # XP1000 [Alpha 21264-3 (EV6) - 256 meg] FreeBSD 5.3 # XP1000 [Alpha 21264-A (EV 6.7) - 384 meg] FreeBSD 5.3 firstname.lastname@example.org email@example.com firstname.lastname@example.org email@example.com
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