GS-3120-48TC:admin#show dhcp_relay
Command: show dhcp_relay

DHCP/BOOTP Relay Status         : Enabled
DHCP/BOOTP Hops Count Limit     : 4
DHCP/BOOTP Relay Time Threshold : 0
DHCP Vendor Class Identifier Option 60 State: Disabled
DHCP Client Identifier Option 61 State: Disabled
DHCP Relay Agent Information Option 82 State  : Enabled
DHCP Relay Agent Information Option 82 Check  : Disabled
DHCP Relay Agent Information Option 82 Policy : Replace
DHCP Relay Agent Information Option 82 Remote ID : BC-F6-85-BD-20-F0

Interface    Server 1        Server 2        Server 3        Server 4
------------ --------------- --------------- --------------- ---------------

Server           VLAN ID List
---------------  -----------------------------------------------------------
10.200.10.225    102

GS-3120-48TC:admin#show ipif net3
IP Interface                : net3
VLAN Name                   : testid
Interface Admin State       : Enabled
DHCPv6 Client State         : Disabled
Link Status                 : LinkUp
IPv4 Address                : 192.168.3.1/24 (Manual)  Primary
Proxy ARP                   : Disabled   (Local : Disabled)
IPv4 State                  : Enabled
IPv6 State                  : Enabled

DGS-3120-48TC:admin#show vlan testid
Command: show vlan testid


VID             : 102             VLAN Name     : testid
VLAN Type       : Static          Advertisement : Disabled
Member Ports    : 1:31
Static Ports    : 1:31
Current Tagged Ports  :
Current Untagged Ports: 1:31
Static Tagged Ports   :
Static Untagged Ports : 1:31
Forbidden Ports       :

 Total Entries: 1

FreeBSD test.freebsd 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan  3 07:46:30 UTC 2012

isc-dhcp42-server-4.2.4_2 The ISC Dynamic Host Configuration Protocol server

local-address              10.200.10.225;
option domain-name-servers 10.200.40.6;
log-facility               local7;
authoritative;

shared-network "clients"
    {
subnet 192.168.3.0 netmask 255.255.255.0
{
    option subnet-mask 255.255.255.0;
    option broadcast-address 192.168.3.255;
    option routers 192.168.3.1;
    if exists agent.circuit-id
    {
    log(info, concat
        ("Lease"
         ," IP ",     binary-to-ascii(10,  8, ".", leased-address)
         ," MAC ",    binary-to-ascii(16,  8, ":", substring(hardware,                1, 6))
         ," port ",   binary-to-ascii(10, 16, "",  substring(option agent.circuit-id, 4, 2))
         ," VLAN ",   binary-to-ascii(10, 16, "",  substring(option agent.circuit-id, 2, 2))
        )
        );
    }
    class "VLAN102"
    {
    match if binary-to-ascii(10, 16, "",  substring(option agent.circuit-id, 2, 2)) = "102";
    }
    pool
    {
        allow members of "VLAN102";
        range 192.168.3.2 192.168.3.100;
    }
}
subnet 10.200.0.0  netmask 255.255.0.0  {}
}

Apr  8 18:09:10 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:10 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:10 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:10 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:43 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:43 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:43 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:43 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:48 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:48 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:48 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:48 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:56 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:56 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:09:56 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:09:56 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:10:12 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:10:12 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:10:12 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:10:12 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:15:54 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:15:54 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:15:54 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:15:55 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:15:59 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:15:59 test dhcpd: Lease IP 192.168.3.2 MAC e8:3:9a:5:dc:59 port 287 VLAN 102
Apr  8 18:15:59 test dhcpd: DHCPDISCOVER from e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1
Apr  8 18:15:59 test dhcpd: DHCPOFFER on 192.168.3.2 to e8:03:9a:05:dc:59 (XXXXXX) via 192.168.3.1

 Client IP address: 0.0.0.0 (0.0.0.0)
    Your (client) IP address: 0.0.0.0 (0.0.0.0)
    Next server IP address: 0.0.0.0 (0.0.0.0)
    Relay agent IP address: 192.168.3.1 (192.168.3.1)
    Client MAC address: SamsungE_05:dc:59 (e8:03:9a:05:dc:59)
    Client hardware address padding: 00000000000000000000
    Server host name not given
    Boot file name not given
    Magic cookie: DHCP
    Option: (53) DHCP Message Type
        Length: 1
        DHCP: Discover (1)
    Option: (61) Client identifier
        Length: 7
        Hardware type: Ethernet
        Client MAC address: SamsungE_05:dc:59 (e8:03:9a:05:dc:59)
    Option: (12) Host Name
        Length: 11
        Host Name: sp-nb-rukin
    Option: (60) Vendor class identifier
        Length: 8
        Vendor class identifier: MSFT 5.0
    Option: (55) Parameter Request List
        Length: 12
        Parameter Request List Item: (1) Subnet Mask
        Parameter Request List Item: (15) Domain Name
        Parameter Request List Item: (3) Router
        Parameter Request List Item: (6) Domain Name Server
        Parameter Request List Item: (44) NetBIOS over TCP/IP Name Server
        Parameter Request List Item: (46) NetBIOS over TCP/IP Node Type
        Parameter Request List Item: (47) NetBIOS over TCP/IP Scope
        Parameter Request List Item: (31) Perform Router Discover
        Parameter Request List Item: (33) Static Route
        Parameter Request List Item: (121) Classless Static Route
        Parameter Request List Item: (249) Private/Classless Static Route (Microsoft)
        Parameter Request List Item: (43) Vendor-Specific Information
    Option: (82) Agent Information Option
        Length: 18
        Option 82 Suboption: (1) Agent Circuit ID
            Length: 6
            Agent Circuit ID: 00040066011f
        Option 82 Suboption: (2) Agent Remote ID
            Length: 8
 Agent Remote ID: 0006bcf685bd20f0
    Option: (255) End
        Option End: 255