determine whether to forward or drop the response. For more information, see
[ip | mac | mgmt-vlan]
Specifies the remote ID suboption that the switch uses in Option 82 fields added or appended to DHCP client
packets. The type of remote ID defines DHCP policy areas in the client requests sent to the DHCP server. If a
remote ID suboption is not configured, the routing switch defaults to the
mac
on page 302.
•
ip:
Specifies the IP address of the VLAN on which the client DHCP packet enters the switch.
•
mac:
Specifies the routing switch's MAC address. (The MAC address used is the same MAC address that is
assigned to all VLANs configured on the routing switch.) This is the default setting.
•
mgmt-vlan:
Specifies the IP address of the (optional) management VLAN configured on the routing switch. Requires
that a management VLAN is already configured on the switch. If the management VLAN is multinetted, the
primary IP address configured for the management VLAN is used for the remote ID.If you enter the
dhcp-
relay option 82
command without specifying either
ip
or
mac
, the MAC address of the switch on
which the packet was received from the client is configured as the remote ID. For information about the
remote ID values used in the Option 82 field appended to client requests, see
on
page 302.
Example
In the routing switch shown below, option 82 has been configured with
mgmt-vlan
for the remote ID.
switch(config)# dhcp-relay option 82 append mgmt-vlan
The resulting effect on DHCP operation for clients X, Y, and Z is shown in the following table.
Figure 48: DHCP Option 82 when using the management VLAN as the remote ID suboption
Chapter 14 Dynamic Host Configuration Protocol
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