KAD/SWI/102
4-port Ethernet switch module with a dedicated programming port
Description
The KAD/SWI/102 is a four-port Ethernet switch designed for operating in harsh environments and includes two input 100BaseTX ports aggregated to two 100BaseTX aggregator ports, one of which can be used as a dedicated programming port.
The KAD/SWI/102 has a store-and-forward switching architecture; incoming Ethernet frames from both ingress Ethernet ports are stored before they are forwarded out on the egress Ethernet port. The remaining fourth port is a dedicated programming port that may be used to program the system through the module. The hard-wired routing in the KAD/SWI/102 controls the flow of Ethernet frames being switched through the module. In this way, it can ensure that no Ethernet frames are forwarded back to the external network. The KAD/SWI/102 has a network activity register associated with each Ethernet port. This register counts packets forwarded through the ports during a one second interval and can be read over the backplane. The KAD/BIT/102 module uses this register to identify when network link problems occur.
The KAD/SWI/102 transparently supports IEEE 1588v1 Precision Time Protocol (PTP) messages. This provides a greater degree of synchronization accuracy than would be achieved using a non-1588 switch, even under heavy network traffic conditions. For example, ±100ns instantaneous error (typical), when connecting with ACRA CONTROL's KAD/BCU/105/C (Ethernet backplane controller) is possible.
Features
- Four-port Ethernet network switch using a standard 52-way double-density connector
- 100BaseTX Ethernet links over copper wiring with auto-negotiation
- 100BaseTX Ethernet receive-only link over copper wiring to external network
- Store-and-forward operation
- Two-port to two-port link aggregation
- Additional port for programming or monitoring
- IEEE 1588v1 support with transparency mode of operation
- Live at power-up (static internal routing; no MAC address learning time delays)
- Supports IEEE 802.3 and Ethernet 802.1Q tagged frames (vlan)
Applications
- Airborne interconnection for data acquisition units and network data recorders in an Ethernet environment
Four-port Ethernet switch