i3 International S81, User Manual

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DHCP Relay Configuration Parameters:
Items Description
Relay Mode Indicates the DHCP relay mode operation. Possible modes are:
Enabled: Enable DHCP relay mode operation. When DHCP relay mode operation is enabled, the
agent forwards and transfers DHCP messages between the clients and the server when
they are not in the same subnet domain. And the DHCP broadcast message won't be
flooded for security considerations.
Disabled: Disable DHCP relay mode operation.
Relay Server Indicates the DHCP relay server IP address.
Relay Information Mode Indicates the DHCp relay information mode option operation. The option 82 circuit ID format
as "[vlan_id] [module_id] [port_no]". The first four characters represent the VLAN ID, the
fifth and sixth characters are the module ID (in a standalone device it always equals 0, in
stackable device it means switch ID), the last two characters are the port number. For
example, "00030108" means the DHCP message received form VLAN ID 3, switch ID 1, and
port No 8. And the option 82 remote ID value is equal to the switch MAC address. Possible
modes are:
Enabled: Enable DHCP relay information mode operation. When DHCP relay information
mode operation is enabled, the agent inserts specific information (option 82) into a
DHCP message when forwarding to DHCP server and removes it from a DHCP message
when transferring to DHCP client. It only works when DHCP relay operation mode is
enabled.
Disabled: Disable DHCP relay information mode operation.
Relay Information Policy Indicates the DHCP relay information option policy. When DHCP relay information mode
operation is enabled, if the agent receives a DHCP message that already contains relay
agent information it will enforce the policy. The 'Replace' policy is invalid when relay
information mode is disabled. Possible policies are.
Replace: Replace the original relay information when a DHCP message that already
contains it is received.
Keep: Keep the original relay information when a DHCP message that already contains it is
received.
Drop: Drop the package when a DHCP message that already contains relay information is
received.
Security
This section describes how to configure the Port Security settings of the Switch. The Port Security feature can be used to
restrict input to an interface by limiting and identifying MAC addresses.
Security Switch Users
This page provides an overview of the current users. Currently the only way to login as another user on the web server is to
close and reopen the browser.
To configure Security Users in the web interface:

Click Configuration / Security / Switch / Users

Click Add New User

Enter User Name parameter

Click Apply and click the Save icon in the upper right corner to save the settings or click Reset to cancel. The
Form will return to the previously saved settings.