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xStack® DGS-3620 Series Managed Switch Web UI Reference Guide
Chapter 9
DHCP
DNS
RCP Server Settings
SNTP
Flash File System Settings
DHCP
DHCP Relay
DHCP Relay Global Settings
Users can enable and configure DHCP Relay Global Settings. The relay hops count limit allows the maximum
number of hops (routers) that the DHCP messages can be relayed through to be set. The DHCP packet will be
dropped when the relay hop count in the received packet is equal to or greater than this setting. The range is
between 1 and 16 hops, with a default value of 4. The relay time threshold sets the minimum time (in seconds) that
the Switch will wait before forwarding a BOOTREQUEST packet. If the value in the seconds' field of the packet is
less than the relay time threshold, the packet will be dropped. The range is between 0 and 65,535 seconds, with a
default value of 0 seconds.
To view this window, click Network Application > DHCP > DHCP Relay > DHCP Relay Global Settings as
shown below:
The fields that can be configured are described below:
Parameter
DHCP Relay State
DHCP Relay Hops
Count Limit (1-16)
DHCP Relay Time
Threshold (0-65535)
Network Application
Figure 9-1 DHCP Relay Global Settings window
Description
This field can be toggled between Enabled and Disabled using the drop-down
menu. It is used to enable or disable the DHCP Relay service on the Switch. The
default is Disabled.
This field allows an entry between 1 and 16 to define the maximum number of
router hops DHCP messages can be forwarded. The default hop count is 4.
Allows an entry between 0 and 65535 seconds, and defines the maximum time limit
for routing a DHCP packet. If a value of 0 is entered, the Switch will not process the
value in the seconds' field of the DHCP packet. If a non-zero value is entered, the
Switch will use that value, along with the hop count to determine whether to forward
a given DHCP packet.
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