Assigning leases based on option 82

Jerimiah Cole jcole at
Tue Nov 23 16:44:12 UTC 2010

Denis Laventure wrote:
> Do you use cisco switches on your test environment?


> I don't recognize the agent.circuit-id value "test-01-03/Ethernet7:Vlan2", mine looks like this with cisco 2950:
> host G301A-01   { host-identifier option agent.circuit-id 0:4:1:9:1:1;
 > fixed-address; } # - Fa0/1

The values vary considerably with vendor and configuration.

> It works very well here too... But did you try to have multiple switches on one vlan? The agent.circuit-id option only contain vlan number and module/interface information. How do you identify your different switches on a same vlan without the agent.remote-id?

In my case, the remote-id and circuit-id strings are configurable and
I've configured the switch to identify itself in the circuit-id option,
along with the interface name and vlan.


More information about the dhcp-users mailing list