
xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch User Manual
Parameter
Description
DHCP Relay Option
State
This field can be toggled between
Enabled
and
Disabled
using the pull-down menu. It is
used to enable or disable the DHCP Agent Information Option on the Switch. The default is
Disabled.
Enabled
– When this field is toggled to
Enabled
the relay agent will insert and remove
DHCP relay information (option 82 field) in messages between DHCP servers and clients.
Disabled -
If the field is toggled to
Disabled
the relay agent will not insert and remove DHCP
relay information (option 82 field) in messages between DHCP servers and clients, and the
check and policy settings will have no effect.
DHCP Relay Option
Check
This field can be toggled between
Enabled
and
Disabled
using the pull-down menu. It is
used to enable or disable the Switches ability to check the validity of the packet’s option
field.
Enabled
– When
Enabled
, the relay agent will check the validity of the packet’s option field.
If the Switch receives a packet that contains the option field from a DHCP client, the Switch
drops the packet because it is invalid. In packets received from DHCP servers, the relay
agent will drop invalid messages.
Disabled -
When
Disabled
, the relay agent will not check the validity of the packet’s option
82 field.
DHCP Relay Option
Policy
This field can be toggled between
Replace, Drop,
and
Keep
by using the pull-down menu
and is used to set the Switches policy for handling packets when the
DHCP Relay Option
Check
is set to
Disabled
. The default setting is
Replace.
Replace
- The option field will be replaced if the option field already exists in the packet
received from the DHCP client.
Drop
- The packet will be dropped if the option field already exists in the packet received
from the DHCP client.
Keep
- The option field will be retained if the option field already exists in the packet
received from the DHCP client.
NOTE:
If the switch receives a packet that contains the option 82 field from a DHCP client and the
information-checking feature is enabled, the switch drops the packet because it is invalid. However,
in some instances users may configure a client with the option-82 field. In this situation, disable the
information-check feature so that the Switch does not remove the option-82 field from the packet.
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Содержание TM DES-6500
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