L2 MAC Learning for Multiport Bridging

Mac address learning allows a user to define three ports in a bridge group. This simplifies many deployments by allowing the user to connect an MPLS router and a Firewall directly to the appliance without requiring a switch. Figure 3 provides two examples. The new bridging capability in Oracle SD-WAN Edge R2.4 reduces the need for infrastructure changes when deploying Oracle SD-WAN Edge appliances.

Multiple LAN Routers in Same LAN Subnet Multiple LAN Routers in Different LAN Subnet

MAC address learning for multiport bridging stores the source MAC address of each received packet so that future packets destined for that address can be forwarded only to the port on which that address is located. Packets destined for unrecognized addresses are forwarded out of every port. There are no options to configure this command. When three or more ports are configured in an Interface group this feature is enabled.

Design Considerations

• Oracle does not support user spanning tree with this feature. The infrastructure must therefore be designed accordingly
• This feature is enabled by default

Port Switching

Some WAN service providers do not allow long duration UDP sessions and block them in the Cloud. To avoid such issues, the Oracle SD-WAN Edge R2.4 introduces a new feature allowing the user to specify an alternate UDP port for the Oracle SD-WAN Edge conduit packets. UDP Port Switching is a preventative measure to change the source UDP port at specified intervals. The Alternate UDP port number and the port switch interval are user settable. Port Switching can be set using the Oracle SD-WAN Edge Configuration Editor (Figure 4, below). For more information on the Oracle SD-WAN Edge Configuration Editor, please see the APN Configuration Editor User's Guide.

Port Switching can also be set by editing the configuration file itself. The command line options would include the following:

add conduit_usage

remote_site_name=NCN-Site wan_egress_rate_fair_share=800000 wan_ingress_rate_fair_share=800000 service_group_name=Default udp_port_num=2156

udp_port_num_alt=2157

udp_port_switch_interval_minutes=1500;

udp_port_num =Number (2156)

This will be used as the source UDP port for all WAN ingress packets sent from this link. The Oracle SD-WAN Edge will also only accept WAN Egress packets at this link with dst_port set to this port number.

udp_port_num_alt =Number (2156)

This will be used as the alternate source UDP port for all WAN ingress packets sent from this link. The Oracle SD-WAN Edge will also only accept WAN Egress packets at this link with dst_port set to this port number, or the udp_port_num_alt value.

udp_port_switch_interval_minutes =Number (1440)

if udp_port_num and udp_port_num_alt are both set and are not equal)

Interval in minutes to be used when switching between the two values of udp_port_num and udp_ port_num_alt. Allowed values are from 1 minute to 8640 minutes (6 days).

For more information on the Oracle SD-WAN Edge configuration file, please see the APN Configuration Reference available from the Oracle support site.