DES-3028:4#show dhcp_r
Command: show dhcp_relay

DHCP/BOOTP Relay Status         : Enabled
DHCP/BOOTP Hops Count Limit     : 4
DHCP/BOOTP Relay Time Threshold : 0
DHCP Relay Agent Information Option 82 State     : Enabled
DHCP Relay Agent Information Option 82 Check     : Enabled
DHCP Relay Agent Information Option 82 Policy    : Replace
DHCP Relay Agent Information Option 82 Remote ID : 00-1C-F0-11-1A-99

Interface     Server 1         Server 2         Server 3         Server 4
------------  ---------------  ---------------  ---------------  --------------
System        192.168.254.1

0006001cf0111a99

Boot PROM Version    Build 1.00-B04
Firmware Version   Build 2.00.B27

    *

      for static entries:
      You can add a circuit ID, a remote ID or a combination of both as ID to the "static" list. Incoming requests are matched against the list. of IDs.
    * for dynamic clients, visible relay:
      You can create a profile for a relay IP address with or without a circuit ID.

      For relay profiles with a Circuit-ID the remote ID is used to identify the client (that means Circuit-ID and Remote-ID must match).

      For relay profiles without a Circuit-ID only the Circuit-ID is used to identify the client. In this case it is assumed that only one client is connected per circuit and uniquely identifies the client. The Remote-ID is ignored in this case.
    *

      for dynamic clients, transparent relay:
      For transparent relays the Remote-ID is used to identify a client. The Circuit-ID is ignored.