Attempting to break up a flat design and introduce a router and subnetting. The router/switch is an 8510csr and we are a windows 2000 network. My question is this; how can I get a workstation on one subnet to get dhcp from the dhcp server on another subnet without putting a dhcp server on every subnetted segment? I am using the 'ip helper-address ' on each subnetted etherport.
1. ip helper which you are doing to get your client's DHCP request to the DHCP server. Ensure the ip you specify in your helper statement is the ip of your DHCP server.
2. Create a scope on your DHCP server for the clients subnetwork. Since the DHCP request is wrapped up by the primary IP address of the clients routed interface you'll need to ensure you make a scope to service that specific network.
You'll not need DHCP servers on each subnetwork. Doing the above should work fine for you.
Thanks Don. I set the scope to cover the workstations subnet and did give the ip helper-address of the dhcp server.. hmm. I must be doing something else incorrectly. Thanks so much for confirming the ip helper should traverse subnets! Helps a lot!
Yes, the scope is enabled. I must be doing something really stupid. I have in testing, two windows servers, one a dc with dhcp. These two servers are on 10.0.0.1 255.255.255.0 subnet. The test workstation is on 10.0.1.1 255.255.255.0. The ip helper-address is the dc's at 10.0.0.2. Both ports on the 8510csr have this ip helper. I cannot even ping 10.0.0.2 from the workstation on 10.0.1.1 subnet with it having a fixed ip. The setup is simple.
Yes, ip routing is enabled on the router and the dhcp server has dhcp relay turned on. I think your correct and will start looking at cabling etc. Strange though, because I can ping the routers ip and both etherports.. just can't across the subnet to the dhcp server. At least I know it is not an ip helper issue.
I just turned off the dhcp relay on the server. We continue to dig into this one. Must be some sort of physical issue. I will be sure and let you know what I discover and really appreicate your valuable input and time!
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...