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Windows 2000 Server DHCP,  and Cisco 2611 Router.

Posted on 2008-02-10
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I am adding a server to my home network and wanted to try using it as a DHCP server rather than my Cisco 2611.  I removed the DHCP scope from the router and then created one on the server.   Do I need to add something ti the routers config to allow DHCP requests to pass through the network?

Also do I need to have a second NIC in the server ( I do right now but its not being used)  for it to work as a DCHP server or can will one NIC be fine?

Router is a 2611 Cisco connected to 4 1900xl switches (I know they are old but I had them laying around)
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Question by:Stevexpress
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by:Justin Malone
ID: 20863351
if your computers are on the same network then it should work. make sure you authorize your scope in windows server otherwise it wont start handing out address.
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by:Justin Malone
ID: 20863363
if they arent in the same network you need to use the helper command

http://www.ciscopress.com/articles/article.asp?p=330807&seqNum=9

be careful when setting this up. you can possibly see major problems if you dont have DCHP and NAT running on the same device. when changes happen on your network they need to be able to update each other.
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by:Stevexpress
ID: 20863403
Where do I authorize the scope?
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by:Stevexpress
ID: 20863418
ok its been authorized.   But the client is un able to pull an address.
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by:Justin Malone
ID: 20863484
is the client in the same network or do you go through the router?
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by:Stevexpress
ID: 20863492

No the router is merely there for internet access and static NAT routers for FTP, RDP, and so on.

So its       Router ---Switch---Switch----Switch ---- Switch
                                                                             |
                                                                                       Server, workstation.

The only reason for all the switch's was trucking, and spanning tree.   I am learning these things so I needed more than one switch.
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by:Stevexpress
ID: 20863493
My little diagram came out funny.   The server and the workstation are connected to the last switch.
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by:Justin Malone
ID: 20863533
then unless you have a funky config on your switch (ie vlans) there shouldnt be a problem. can you manualy assign your workstation an address and ping your server?
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by:Stevexpress
ID: 20863550
Let me try that.   I assume AD has nothing to do with this because the machine can't communicate without an IP.
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by:Stevexpress
ID: 20863558
Ok I set it up on a static address and its pinging the router and the server without an issue.

is the whole DHCP process considered to reside on layers higher than 2.  If so the router must play some sort of a role because the 1900's have no layer 3 capability..?
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Justin Malone earned 2000 total points
ID: 20863570
i have vmwar open and my implimintation of AD with DHCP and other services. im just describeing how i have mine set up just in case something i sa triggers a thought.

server.blue.com[10.0.0.0) has a green up arrow
in the right pannel it says scope [10.0.0.0] Scope1            **Active**

im useing opions 006 (DNS Address) 015 (DNS Domain name) and 46 Node type

ok thats about it i did nothing special with m dhcp server it pretty mutch just works.
if your scope is authorized and active then the only reason i can see why your not receveing anything is due to the network settings itself.
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by:Justin Malone
ID: 20863576
no, you dont need a router for dhcp to work

when i was leaning active directoy we were only useing hubs and we set it up.
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by:Stevexpress
ID: 20863581
ah we have a problem the green arrow is a red one pointing down :(
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by:Justin Malone
ID: 20863583
did you set up a scope?
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by:Justin Malone
ID: 20863590
and if so did you activate it? (right click on scope click activate)
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by:Stevexpress
ID: 20863597
Does it matter if the Domain name i just BS.   I made it  hq.stevecooper.com

my name.
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by:Justin Malone
ID: 20863603
no it dossent matter, i dont own blue.com either lol
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by:Stevexpress
ID: 20863612
yea I didn't think it would matter just trying to rule out things.    This isnt something I need to work I just wanted to try it.  The Cisco worked just fine and I can reconfig it to run DHCP.   I just hate to leave something with out knowing why it doesn't work when it should.
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by:Justin Malone
ID: 20863620
i dont think you should either. getting dhcp to work in 2003 server is insainly easy. if its not working then its something really simple.
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by:Stevexpress
ID: 20863622
Hahahha this is ridiculous.  I clicked on action and refresh.  The green arrow is up.  So I went back to the client that I and set static for the ping test and set it up for DHCP.  It now has the first address in the scope.  
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by:Stevexpress
ID: 20863628

I just added the router as the default gateway and released / renewed the IP and the internet is now operating.
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by:Justin Malone
ID: 20863647
sweets!
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by:Justin Malone
ID: 20863671
what cisco cert are you going for? im currently studying for CCNP
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by:Stevexpress
ID: 20863688
CCNA  just getting into it.   I thought the CCNP was scrapped?
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Author Closing Comment

by:Stevexpress
ID: 31429686
Thank you for your help one this one.
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by:Stevexpress
ID: 20874986
OK I now have my server running as a DC, DHCP server, DNS, and WINS.  Everything is up and running.
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by:Justin Malone
ID: 20879491
-^.^-

next thigs to try

set up IIS with HTTP & FTP
Bring up child domains
Set up DFS
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