MES1000, MES2000 Ethernet Switches
181
remote_id
no ip dhcp information
option format-type
remote-id
Set the default value.
ip dhcp information option
format-type option
format
[delimeter
delimeter
]
format: sp, sv, pv, spv, bin
delimeter: {. , ; # / space }
DHCP Option 82 format configuration.
Format:
- sp—slot and port number
- sv—slot and VLAN number
- pv—port and VLAN number
- spv—slot, port and VLAN number
- bin—binary format: VLAN, slot, port.
no ip dhcp information
option format-type option
Set the default value.
ip dhcp information option
suboption type
{
tr101|custom
}
-/tr101
Option 82 format configuration.
-
tr101
—set the Option 82 format according to the syntax
specified in TR-101 recommendations.
-
custom—
set the Option 82 format according to the format
from Table
5.211
.
no ip dhcp information
option suboption type
Restore the default value.
Table 5.210 —Option 82 field format according to the TR-101 recommendations
Field
Information sent
Circuit ID
device hostname
string appearance: eth <stacked/slotid/interfaceid>:<vlan>
The last byte—number of the port that the device, which sent dhcp request, is
connected to
Remote agent ID
Enterprise number – 0089c1
Device MAC address
able 5.211 —Option 82 field format in custom mode
Field
Information sent
Circuit ID
Length (1 byte)
Circuit ID type
Length (1 byte)
VLAN (2 bytes)
Module number (1 byte)
Port number (1 byte)
Remote agent ID
Length (1 byte)
Remote ID type (1 byte)
Length (1 byte)
Switch MAC address
Ethernet interface configuration mode commands (interface range), port group interface
Command line request in Ethernet interface, port group interface configuration mode appears as
follows:
console(config-if)#
Table 5.212—Ethernet interface configuration mode commands, interface group
Command
Default value
Action
ip dhcp snooping trust
The interface is not trusted
by default.
Add the interface into the trusted interface list, when DHCP
management is used. Trusted interface DHCP traffic is deemed
as safe and not controlled.