Cambium Networks PTP 820 Series User Manual page 846

Chapter 18: Ethernet Services and Interfaces (CLI)
Defining the MAC Address Forwarding Table for a Service (CLI)
This section includes:
•
MAC Address Forwarding Table Overview (CLI)
•
Setting the Maximum Size of the MAC Address Forwarding Table (CLI)
•
Setting the MAC Address Forwarding Table Aging Time (CLI)
•
Adding a Static MAC Address to the Forwarding Table (CLI)
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Displaying the MAC Address Forwarding Table (CLI)
•
Flushing the MAC Address Forwarding Table (CLI)
•
Enabling MAC Address Learning on a Service Point (CLI)
MAC Address Forwarding Table Overview (CLI)
PTP 820G and PTP 820F performs MAC address learning per service. PTP 820G and PTP 820F can learn up to
131,072 MAC addresses.
If necessary due to security issues or resource limitations, you can limit the size of the MAC address forwarding
table. The maximum size of the MAC address forwarding table is configurable per service in granularity of 16
entries.
When a frame arrives via a specific service point, the learning mechanism checks the MAC address forwarding
table for the service to which the service point belongs to determine whether that MAC address is known to the
service. If the MAC address is not found, the learning mechanism adds it to the table.
In parallel with the learning process, the forwarding mechanism searches the service's MAC forwarding table for
the frame's MAC address. If a match is found, the frame is forwarded to the service point associated with the MAC
address. If not, the frame is flooded to all service points in the service.
Setting the Maximum Size of the MAC Address Forwarding Table (CLI)
To limit the size of the MAC address forwarding table for a specific service, go to service view for the service and
enter the following command:
service[SID]>service mac-limit-value set <mac limit>
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Configuring Ethernet Services (CLI)