static routing

[tlcscousin]

I am trying to route between three pc's.
1)ip 172.16.101.2/255.255.255.0[DNS/IIS server]
2)ip172.16.102.2/255.255.255
3)ip 1st card 172.16.101.1/255.255.255
ip 2nd card 172.16.102.1/255.255.255[DHCP server]
Have DHCP with reservations for both of the other servers
Have tried a static route set as destination172.16.101.0 netmask 255.255.255.0 gateway 172.16.102.1.
If i set static ip's and gateway on the other servers it will allow me to access the web server but I have to have them set to obtain ip addresses from the dhcp server.
I am doing a network infrastructure course and unfortunately the teachers havent been able to figure out the problem they say my routing table looks good and my settings as well, but it's not working.
If any body can tell me where I am going wrong it would be appreciated. I have looked through a lot of books but nothing really covers routing in any depth.

 

[Jpoandl]

Um...It appears that you want your client machines to use DHCP and not have a static.

Usually in a routed environment, you must configure the routers to forward BootP broadcast. BootP type broadcast are what the client uses to find DHCP servers. Anyway, maybe your clients are not able to find the DHCP server? Can you please confirm? Do you clients get a DHCP address?

If not, you may have to install the DHCP relay agent. I think you would have to install this on the Multi-homed DHCP server.

Hope this helps a little...

(I am assuming your routes are fine...seeing how you can gain access where need when using static IP address configurations. I you will have to enable the ICMP protocol to see ping responses..)

later... Joseph L. Poandl
MCSE 2000

 

[tlcscousin]

The client do get their addresses ok I have it set for both bootp and dhcp.It worked once when i did a gateway of 1.1.1.1 but the teacher had me delete it thinking maybe it had kicked in on the time they had been runing for a half hour, immediately lost contact and reinput of the 1.1.1.1 didnt bring it back.A suggestion was put to me to enable routing on the 2nd server as well as the DHCP erver I will try that and see if it works.

 

[tlcscousin]

Ok I got it working perfectly today put routes on all three servers.I also was not using active directory and ran dcpromo on all three after i got the route to work finally.
I was told that I should not be able to see all three in network places but two of them show all three it is just the master server that doesnt show all three but pings all three.

 

[Jpoandl]

Hey thats great that you got that working!

Not too sure about your exact environment. I did find this information:

Question:

If a multihomed computer connected to two disjoint networks runs Windows NT with TCP/IP installed and functions as a browser, can clients on one network browse servers on the other network?

Answer:

No. As far as the browser is concerned, these are two disjoint networks and the browser is not able to browse across disjoint networks (only across subnets on a single network). The critical issue is that NetBT presents the cards as distinct physical networks to the browser.

This was found in the following Technet article:

http://support.microsoft.com/support/kb/articles/Q136/7/12.asp

I would also look at this article for more information:

http://support.microsoft.com/support/kb/articles/Q188/0/01.ASP

Also this one pertains...:

http://support.microsoft.com/support/kb/articles/Q237/4/56.ASP

Joseph L. Poandl
MCSE 2000