H3C Technologies H3C S7500E Series Switches - Manual (Page 110)

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Enabling the Multicast Trigger Function
With the 802.1X multicast trigger function enabled, a port will periodically send multicast
messages to clients to initiate authentication. This function is used for clients that cannot
initiate authentication unsolicitedly.
Follow these steps to configure the multicast trigger function:
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet interface view
interface interface-type
interface-number
—
Enable the multicast trigger
function
dot1x multicast-trigger
Optional
Enabled by default
When the multicast trigger function is enabled, it is recommended to disable the unicast trigger
function to avoid duplicate transmission.
Enabling the Unicast Trigger Function
With the 802.1X unicast trigger function enabled, when the device receives a data frame with
an unknown source MAC address, it unsolicitedly sends a unicast authentication packet to the
MAC address to initiate authentication, and will resend the packet if it receives no response
within a period of time unless the maximum number of retries is reached. The transmission
interval is determined by the setting of the dot1x timer supp-timeout command, while the
maximum number of retries depends on the setting of the dot1x retry command.
The unicast trigger function is applicable to scenarios where clients cannot initiate
authentication unsolicitedly and only some clients need to be authenticated. With the unicast
trigger function, clients that have been authenticated or do not need to be authenticated will not
receive any unicast authentication packets.
Follow these steps to configure the unicast trigger function:
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet interface view
interface interface-type
interface-number
—
Enable the unicast trigger
function
dot1x unicast-trigger
Required
Disabled by default