User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 581 of 825
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17.1.5
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)
•
Displaying the MAC Address Forwarding Table (CLI)
•
Flushing the MAC Address Forwarding Table (CLI)
•
Enabling MAC Address Learning on a Service Point (CLI)
17.1.5.1
MAC Address Forwarding Table Overview (CLI)
IP-20 performs MAC address learning per service. IP-20 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.
17.1.5.2
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>
Table 148: MAC Address Forwarding Table Maximum Size CLI Parameters
Parameter
Input Type
Permitted Values
Description
mac limit
Number
16 to 131,072, in
multiples of 16
The maximum MAC
address table size for
the service. This
maximum only applies
to dynamic, not static,
MAC address table
entries.
The following command limits the number of dynamic MAC address forwarding
table entries for Service 10 to 128:
service[10]>service mac-limit-value set 128