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Configurable Options

The transmit-only and receive-only interfaces created on a DPC port act independently. On the parent interface, you configure only the physical interface attributes common to both links. These attributes include clocking, framing, gigabit Ethernet options, and SONET options. On each of the unidirectional interfaces, you independently configure encapsulation (Ethernet only), MAC address, MTU size, address family (inet or inet6), and logical interfaces. VLAN tagging (untagged, single, stacked, or flexible) and VLAN IDs are also independently configurable on the receive-only and transmit-only interfaces. The full range of numbers for logical interfaces and VLAN IDs is available to both unidirectional interfaces.

To forward packets, you can configure only static ARP entries and static routes separately on each of the unidirectional interfaces. This configuration enables the transmit-only and receive-only interfaces to link to different ports on different routers. No other method of packet forwarding is currently supported.

The transmit-only and receive-only interfaces are removed when you delete unidirectional mode from the parent interface. The parent interface resumes operation as a normal, bidirectional interface.

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