User Manual

Configure Switching
167
Insight Managed 8-Port Gigabit Ethernet Smart Cloud Switch with 2 SFP Fiber Ports
The login window opens.
4. Enter the switch’s password in the password field.
The default password is password. If you added the switch to a network on the Insight
app before and you did not yet change the password through the local browser interface,
enter your Insight network password.
The System Information page displays.
5. Select Switching > Address Table > Advanced > Static MAC Address.
The page displays the Port List section and the Static MAC ADdress Table section.
6. From the Interface menu, select the interface.
7. Select the check box for the static MAC address.
You can select multiple MAC addresses.
8. 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 multicast
destination address (09:00:09:09:13:A6) 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
multicast 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 multicast 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.
If loop protection is disabled, the multicast packet is silently dropped.
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