02-10-2010 07:06 AM
one of our customers wants to discover and manage DHCP clients. The security processes actually do not allow to activate any sort of snmp (v1/2/3) needed for dhcp discovery (read arp cache).
So is it possible to discover and manage dhcp clients without activating dhcp discovery ?
Are there any great cons? What are your experiences ?
For information: dhcp lease is set to about 7 days.
Thank you for your help !
02-10-2010 07:50 AM
I'm sure that if I had access to ARP tables, the discovery process would work a little better, but I have nothing to complain about and the DDMI server functions just fine for me.
DDMI is set to ping sweep subnets that you define in your device groups. I have about 75 device groups with a bunch of subnets defined. At 30 pings a second, it takes 90 minutes to get through my 'known' network. DDMI will find the new ips for devices if they change, merge them accordingly, etc.
My experience is that it is NOT critical to the success at all of the DDMI.
02-10-2010 07:50 PM
If you are not scanning and don't have SNMP enabled on something that gives you ARP tables, you will definitely get a bunch of duplicate devices.
BTW> You need at least 1 device in the network (other than the DDMI server itself) to have SNMP enabled so that aging works properly.
02-11-2010 12:48 AM
yes I know all that but the prob is that we could not under any circumstances turn snmp on. ItÂ´s a Security policy at the customer, that snmp is off.
Are there any alternatives without snmp, or could I extend the expiry value or something else ?
Thank you for your great help !