ZyXEL Communications IES-1248-71, User Manual

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Chapter 47 DHCP Commands
IES-1248-71/73 User’s Guide
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This command has no effect if the relaymode is both . If the relaymode is auto , this command
specifies to which DHCP server (the primary one or the secondary one) the IES-1248 should
relay DHCP requests for the selected VLAN.
47.1.7 Relaymode Command
Syntax:
ras> switch dhcprelay relaymode <mode>
where
This command controls how the IES-1248 routes DHCP requests. The IES-1248 can route
DHCP requests to the active DHCP server for the VLAN, or it can route DHCP requests to all
DHCP servers set up for the VLAN.
47.2 DHCP Relay Option 82 (Agent Information) Sub-option 1
(Circuit ID)
Use the following commands to configure the DHCP relay Option 82 (agent information)
feature, sub-option 1. This feature applies regardless of whether or not the DHCP relay is on.
47.2.1 Option 82 Sub-option 1 Enable Command
Syntax:
ras> switch dhcprelay option82 enable
This command turns on the DHCP relay agent information (Option 82 Sub-option 1) feature.
47.2.2 Option 82 Sub-option 1 Disable Command
Syntax:
ras> switch dhcprelay option82 disable
This command turns off the DHCP relay agent information (Option 82, Sub-option 1) feature.
47.2.3 Option 82 Sub-option 1 Set Command
Syntax:
ras> switch dhcprelay option82 set [<relay info>]
<mode> =
relay process mode; it controls to which DHCP server(s) the
IES-1248 relays DHCP requests.
auto - the IES-1248 relays DHCP requests to the active server
for each VLAN
both - the IES-1248 relays DHCP requests to the primary and
secondary server for each VLAN, regardless of which one is
active