Deployment of a Standalone Device
The Ethernet ports on the SBC CPU module can operate in pairs, called Ethernet Groups, to provide Ethernet port 1+1 redundancy. In each pair, one port serves as the active Ethernet port while the other as standby. When the active port fails, the device switches to the standby Ethernet port.
By default, the ports are assigned to pairs, as shown in the following figure. However, you can change the port assignment, including the option to assign only one port to an Ethernet Group (i.e., no 1+1 redundancy scheme). For more information, refer to the User's Manual.
Default Ethernet Groups
| ● | Two different MAC addresses are assigned to the Ethernet ports: one to ports GE 1-4 (upper ports) and another to ports GE 5-8 (lower ports). See previous figure. |
| ● | When implementing 1+1 Ethernet port redundancy, please adhere to the following guidelines: |
| ✔ | Each port in the Ethernet Group (port pair) must be connected to a different switch (but in the same subnet). |
| ✔ | Ports with the same MAC address (e.g., GE 1-4 ports) must each be connected to a different Layer-2 switch (as the ports share the same MAC address). |
The following example shows an Ethernet Group comprised of ports 5 and 6, where Port 5 is connected to the main network ("LAN #1") and Port 6 to the redundant network ("LAN #2"). Upon connectivity failure with LAN #1 through Port 5, the device connects to the redundant LAN #2 through Port 6.
Cabling for 1+1 Ethernet-Port Redundancy (Example)
