Allow V1 Modules : No
Up Time : 32 days Memory - Total : 128,839,680
CPU Util (%) : 0 Free : 65,802,416
IP Mgmt - Pkts Rx : 5,372,271 Packet - Total : 6750
Pkts Tx : 298,054 Buffers Free : 5086
Lowest : 4441
Missed : 0
Configuring Option 82
For information on Option 82, see the sections beginning with
on page 300.
Syntax:
dhcp-relay option 82 [append [validate] | replace [validate] | drop [validate] | keep] [ip | mac | mgmt-vlan]
append
Configures the switch to append an Option 82 field to the client DHCP packet. If the client packet has existing
Option 82 fields assigned by another device, the new field is appended to the existing fields.
The appended Option 82 field includes the switch Circuit ID (inbound port number*) associated with the client
DHCP packet and the switch Remote ID. The default switch remote ID is the MAC address of the switch on
which the packet was received from the client.
To use the incoming VLAN's IP address or the Management VLAN IP address (if configured) for the remote ID
instead of the switch MAC address, use the
ip
or
mgmt-vlan
option (below.)
replace
Configures the switch to replace existing Option 82 fields in an inbound client DHCP packet with an Option 82
field for the switch.
The replacement Option 82 field includes the switch circuit ID (inbound port number*) associated with the
client DHCP packet and the switch remote ID. The default switch remote ID is the MAC address of the switch
on which the packet was received from the client.
To use the incoming VLAN's IP address or the Management VLAN IP address (if configured) for the remote ID
instead of the switch MAC address, use the
ip
or
mgmt-vlan
option (below.)
drop
Configures the routing switch to unconditionally drop any client DHCP packet received with existing Option 82
fields. This means that such packets will not be forwarded. Use this option where access to the routing switch
by untrusted clients is possible.
If the routing switch receives a client DHCP packet without an Option 82 field, it adds an Option 82 field to the
client and forwards the packet. The added Option 82 field includes the switch circuit ID (inbound port
number*) associated with the client DHCP packet and the switch remote ID. The default switch remote ID is
the MAC address of the switch on which the packet was received from the client.
To use the incoming VLAN's IP address or the Management VLAN IP address (if configured) for the remote ID
instead of the switch MAC address, use the
ip
or
mgmt-vlan
option (below.)
keep
For any client DHCP packet received with existing Option 82 fields, configures the routing switch to forward
the packet as-is, without replacing or adding to the existing Option 82 fields.
validate
Operates when the routing switch is configured with append, replace, or drop as a forwarding policy. With
validate
enabled, the routing switch applies stricter rules to an incoming Option 82 server response to
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Aruba 3810 / 5400R Multicast and Routing Guide for ArubaOS-
Switch 16.08
