D-Link xStack DGS-3120 Series - Page 315

xStack
®
DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch CLI Reference Guide
310
a.
b.
c.
1
n
User-defined
1 byte
1 byte
Maximum 32 bytes
a. Sub-option type 1 (1 means circuit ID).
b. Length: Total length of user-defined string. By default, the length is 0 with no field
value.
c. Value: User-defined string that can be configured using the config dhcp_relay
port_option_82 command. The maximum length of the user-defined string is 32
bytes.
vendor4 - If configured to vendor4, the circuit ID uses the following format:
a.
b.
c.
d.
e.
f.
g.
h.
i.
1
n
System
name
-
Module
ID
/
Port ID
-
CVID
1 byte
1 byte
0-128
bytes
1 byte
1 byte
1 byte
1-2
bytes
1 byte
1-4
bytes
a. Sub-option type (1 means circuit ID)
b. Length: Total lengths of all follow fields.
c. System name.
d. Separator character
e. Module ID
f. Separator character.
g. Port ID: port number
h. Separator character
i. CVID(Client VLAN ID)
vendor5 – If configured to vendor5, the circuit ID uses the following format:
a.
b.
c.
d.
e.
f.
g.
h.
1
n
System
name
Space
(0x20)
e
(0x65)
t
(0x74)
h
(0x68)
Space
(0x20)
1 byte
1 byte
0-128
bytes
1 byte
1 byte
1 byte
1 byte
1 byte
i.
j.
k.
l.
m.
n.
o.
Chass
is ID
/
(0x2F)
Slot ID
/
(0x2F)
Port
number
:
(0x3A)
VLAN
ID
1-2
bytes
1 byte
1-2
bytes
1-2
bytes
1 byte
1 byte
1-4
bytes
a. Sub-option type (1 means circuit ID).
b. Length.
c. System name of the Switch. NOTE: If the System name exceeds 128 bytes, it will only
use the first 128 bytes.
d. Space
e. Character ‘e’.
f. Character ‘t’.
g. Character ‘h’.
h. Space.
i. Chassis ID. The number of the chassis. For stand-alone devices, the chassis ID will
always be 0. For stacked devices, the chassis ID will be the unit ID.
j. Slash (/).
k. Slot ID. The number of the slot used in the chassis. For non-chassis devices, the slot
ID is the module ID of the device starting from 0.
l. Slash (/).
m. Port number. The number of the client’s port.
n. Colon (:).
o. VLAN ID. The ID number of the client’s VLAN.
vendor6 – If configured to vendor6, the cicuit ID uses the following:
F01
F02
F03
F04
F05
F06
F07
F08
1
Length
E
(0x45)
t
(0x74)
h
(0x68)
e
(0x65)
r
(0x72)
n
(0x6E)