Bottom line is that asset management can be a huge undertaking to accomplish. You need to find out the most important items you need to keep track of and track them well. It will probably be hard to find one application that will do it all. While primarily an IPAM (IP address management) solution, I would suggest http://opennetadmin.com./ It will track subnets, IPs, DNS etc and build DNS and DHCP server configurations. There is also a plugin for managing rack allocations in a fairly basic way (no connections). I think there is plenty of room for improvements from plugins, maybe something to do graphviz diagrams etc. Figured I'd throw that one out there for whoever could benefit from it.

I'd suggest http://opennetadmin.com/ It is primarily an IPAM solution but also has plugins that allow you to track many asset related items. Things like Rack location, puppet "facts", and custom attributes all allow you to track and configure your environment. It features a nice AJAX enabled web front end as well as a full CLI interface as well for scripting/batch etc. More integrations to various tools like nagios, cacti, nmap, nessus, puppet, etc are in the works. Hope that helps.

I'll throw out my solution.

As many people here have suggested, ISC DHCP server has no trouble with this and can handle many subnets and pool combinations from one or more servers. Then with the combination of ip helper-address on Cisco platforms you can control which server(s) handle the network. Throw DHCP-Failover into the mix and make it redundant.

To manage all this I'd suggest OpenNetAdmin. It is geared to manage as any IPAM would, your address space. It can also be instructed to manage multiple DHCP servers in whatever combination you need. Then those servers simply extract their specific configuration from the database. It should have no issue scaling to several hundred distributed DHCP servers if needed. It will all however be managed easily via the centralized WEB/CLI interface. Opennetadmin will also keep track of your vlan information as well.

I would personally avoid running DHCP on the cisco devices, but thats just me. :)

Hope that helps. Again, head to http://opennetadmin.com/ and see if that works for you!

Thanks

I'll throw out http://opennetadmin.com/ as a competitor to Lucent/Vital QIP. Its still in early stages but already can handle DNS and DHCP quite well. It even blends to other facets of your network configuration such as routers/switches.

I'm working on an IPAM tool that might be useful to people. It's still got a bit of work to go but its better than a spreadsheet! Have a look at http://opennetadmin.com/