HP A5830 Series User Manual

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After enabling port security, you can change the port security mode of a port only when the port is
operating in noRestrictions (the default) mode. To change the port security mode for a port in any other
mode, use the undo port-security port-mode command to restore the default port security mode first.
Configuring port security features
Configuring NTK
The NTK feature checks the destination MAC addresses in outbound frames to make sure that frames are
forwarded only to authenticated devices. Any unicast frame with an unknown destination MAC address
is discarded.
The NTK feature supports the following modes:
• ntkonly—Forwards only unicast frames with authenticated destination MAC addresses.
• ntk-withbroadcasts—Forwards only broadcast frames and unicast frames with authenticated
destination MAC addresses.
• ntk-withmulticasts—Forwards only broadcast frames, multicast frames, and unicast frames with
authenticated destination MAC addresses.
Support for the NTK feature depends on the port security mode. For more information, see Table 9.
To c
onfigure the NTK feature:
To do… Use the command… Remarks
1. Enter system view.
system-view —
2. Enter Layer 2 Ethernet
interface view.
interface interface-type interface-
number
—
3. Configure the NTK feature.
port-security ntk-mode { ntk-
withbroadcasts | ntk-
withmulticasts | ntkonly }
Required.
By default, NTK is disabled on a
port and all frames are allowed to
be sent.
Configuring intrusion protection
Intrusion protection enables a device to take one of the following actions in response to illegal frames:
• blockmac—Adds the source MAC addresses of illegal frames to the blocked MAC addresses list
and discards the frames. All subsequent frames sourced from a blocked MAC address are
dropped. A blocked MAC address is restored to normal after being blocked for 3 minutes. The
interval is fixed and cannot be changed.
• disableport—Disables the port until you bring it up manually.
• disableport-temporarily—Disables the port for a specific period of time. The period can be
configured with the port-security timer disableport command.
On a port operating in either the macAddressElseUserLoginSecure mode or the
macAddressElseUserLoginSecureExt mode, intrusion protection is triggered only after both MAC
authentication and 802.1X authentication for the same frame fail.
To configure the intrusion protection feature:

HP A5830 Series Specifications

General

Brand	HP
Model	A5830 Series
Category	Switch
Language	English