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2.6.12 SKA command mode
SKA refers to Secure Customer Connections. In this menu, it provides DHCP snooping,
DHCP option 82, DHCP layer 2 relay and customer port (Port number 1~22) filtering
functions.
DHCP Option 82 Guidelines
The Managed Switch can add information about the source of client DHCP requests that
relay to DHCP server by adding Relay Agent Information. This helps provide authentication
about the source of the requests. The DHCP server can then provide an IP address based
on this information. The feature of DHCP Relay Agent Information adds Agent Information
field to the Option 82 field that is in the DHCP headers of client DHCP request frames.
Guidelines:
Enable DHCP Option 82 Relay Agent global setting.
Create Option 82 and trust port setting.
Create Static IP table for authorized IP address.
Each port
‟s (Port Number 1~22) configuration for DHCP, Static IP or Unlimited.
Prompt
Command & Parameter
Description
Console(config-ska-
opt82)#
mode <enable | disable>
To enable or disable DHCP Opt 82 Relay Agent
Global setting.
port <port_list>
<port_list>: 1~24
For example:
Console(config-ska-opt82)#port 1-4,10-15,18,19
trust-port <port_list>
When Trust Port is set to
“enabled”,
a.it will receive packets with Agent information
and the Managed Switch will forward them.
b.it will receive packets without Agent information
and the Managed Switch will add Agent
information.
When Trust port is set to disabled,
a.it receives packets with Agent information and
the Managed Switch will drop them.
b.it receives packets without Agent information
and the Managed Switch will add Agent
information.
<port_list>: 1~24
For example:
Console(config-ska-opt82)# trust-port 1-4,10-
15,18,19
Console(config-ska)#
sourceguard <port_list>
<unlimited | dhcp | fix-ip>
To specify authorized access information for each
port.