MAC address filtering is an NG WDM broadband transmission solution. MAC address filtering is enabled for Ethernet data boards to alleviate router load.
Figure 1 describes the principle and function of MAC address filtering.
- Station 2: Set the MAC address of the opposite BRAS1.
- Station 3: Dual feeds services. The dual-fed services carry the MAC address of the destination BRAS1 and respectively reach stations 1 and 2.
- Station 2: Analyzes whether the MAC address of the target router of the services is included in the MAC addresses set in Step 1.
- Included: Indicates that BRAS2 is not the destination BRAS of the service and the transmission of the service stops at station 2.
- Excluded: Indicates that BRAS2 is the destination BRAS of the service and the service is transmitted to BRAS2.
