ZyXEL NetAtlas User Guide - Page 264
Configuring Link Bridging Profiles
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Chapter 19 EPON Profile Configuration Table 132 EPON Profile Configuration > Add ONU Profile > Set UNI Port-based VLAN (continued) LABEL DESCRIPTION Forwarding Select the outgoing port(s) (in the Forwarding Table) through which Table traffic from the port is allowed to go. OK Cancel To allow two ports to talk to each other, you must define the outgoing port for both ports. Click OK to save the settings and close this screen. Click Cancel to discard all changes and close this screen. 19.1.3 Configuring Link Bridging Profiles When the OLT receives a frame from an ONU through a logical link, you can set the OLT to forward the frame based on its destination MAC address and/or VLAN tag. The following table shows the traffic bridging types supported by the OLT. Table 133 Traffic Bridging Types BRIDGING TYPE UPSTREAM DOWNSTREAM Simple Bridged The OLT checks the destination MAC addresses of the incoming frames and make forwarding decisions. The OLT also learns the source MAC address of the upstream frames. If a frame's MAC address is not found in the MAC table, the OLT broadcast it. Downstream frames with the VLAN tags will be discarded. The OLT checks the destination MAC addresses of the incoming frames and make forwarding decisions. The OLT also learns the source MAC address of the upstream frames. If a frame's MAC address is not found in the MAC table, the OLT broadcast it. Downstream frames with the VLAN tags will be discarded. Dedicated Single VLAN The OLT strips the customerdefined VLAN tag carried in the upstream frames (if any) and adds a network VLAN tag before forwarding them. If the upstream frames carry multiple VLAN tags, the OLT removes the outermost one. The OLT removes the network VLAN tag from the tagged downstream frames and forwards them to the corresponding links according to the VLAN IDs. The OLT drops untagged downstream frames. Dedicated Double VLAN The OLT preserves the customer-defined VLAN tag carried in the upstream frames (if any) and adds a network VLAN tag before forwarding them. The OLT removes the network VLAN tag from the tagged downstream frames and forwards them to the corresponding links according to the VLAN IDs. The OLT drops untagged downstream frames. 264 NetAtlas EPON Manager User's Guide
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