User Manual

Table Of Contents
Insight Managed 8-Port Gigabit (Hi-Power) PoE+ Smart Cloud Switch with NETGEAR FlexPoE Power
Configure Switching User Manual204
7. From the Interface menu, select the interface.
8. Select the check box for the static MAC address.
You can select multiple MAC addresses.
9. Click the Delete button.
The static MAC address is removed from the MAC address table.
Configure Layer 2 loop protection
Loops inside a network are costly because they consume resources and reduce the
performance of the network. Detecting loops manually can be cumbersome.
The switch can automatically identify loops in the network. You can enable loop protection
per port or globally.
If loop protection is enabled, the switch sends predefined PDU packets to a Layer 2
broadcast destination address (FF:FF:FF:FF:FF:FF) on all ports for which the feature is
enabled. You can selectively disable PDU packet transmission for loop protection on specific
ports even while port loop protection is enabled. If the switch receives a packet with the
previously mentioned broadcast destination address, the source MAC address in the packet
is compared with the MAC address of the switch. If the MAC address does not match, the
packet is forwarded to all ports that are members of the same VLAN, just like any other
broadcast packet. The packet is not forwarded to the port from which it was received.
If the source MAC address matches the MAC address of the switch, the switch can perform
one of the following actions, depending on how you configure the action:
The port is shut down.
A log message is generated. (If a syslog server is configured, the log message can be
sent to the syslog server.)
The port is shut down and a log message is generated.
Loop protection is not intended for ports that serve as uplinks between spanning tree–aware
switches. It is intended for unmanaged switches that drop spanning tree BPDUs. Loop
protection detects physical and logical loops between Ethernet ports on a device. You must
enable loop protection globally before you can enable and configure it at the interface level.
Loop protection is supported on physical interfaces and static LAG interfaces, but not on
dynamic LAG interfaces.
Configure global Layer 2 loop protection
To configure global Layer 2 loop protection:
1. Connect your computer to the same network as the switch.