![]() ![]() Since the IE4000 PRP port is notĪ PoE port, IW3702 should connect to a power injector. The Gig port 0 (PoE IN) of each IW3702 is connected to the two PRP ports of the PRP switch. Two interfaces perform QinQ Tunnel encapsulation for downstream traffic and decapsulation for upstream traffic, so that theĭuplicated traffic can be carried over different VLANs. Is enabled on the aggregate switch Ethernet interfaces (Gi1/0/7 and Gi1/0/8), which connect to the IE switch PRP ports. The traffic between aggregate switch and APs is in QinQ format to identify the path where they come from. PRP2), and tag the data with different VLANs (QinQ Tunnel encapsulation or decapsulation). The PRP capable switch (in this example, the Cisco IE4000) on the infrastructure side serves as the RedBox, performing packetĪPs on the infrastructure side transmit and receive redundant data traffic over different SSIDs (in this example, PRP1 and The two PRP switches (in this example, theĬisco IE4000) work as RedBox (redundancy box) on both the mobile client side and network infrastructure side, performing packetĭetailed functions of each network component are described as following: In this topology, the redundant path is provided by two 5GHz radios on two WGBs. The following figure shows an example of dual WGB dual radio PRP redundancy topology. Each redundancy option is discussed in detail in the following sections with sample configurations provided. Transmitted on dual radio links either by two WGBs (dual WGB, dual radio), or by a single WGB with dual radio links (single The PRP over Wireless feature is supported on IW3702 WGB with two redundancy options. It allows the distribution of traffic over two parallel wirelessĬonnections to achieve the highest level of resilience and reduction in delay variation. The PRP over Wireless feature creates a redundant radio path for data transmission and enables consistentĪnd reliable data connectivity over the wireless network. As shown in the followingįigure, the typical wireless data transmission goes over a single radio path and is susceptible to RF interference and packet Wired client traffic (behind the WGB) using dual radio links to provide reliable wireless transmission. The PRP functionality is available on wireless since Cisco Wireless Controller Release 8.4. Nonredundant endpoints in the network that attach only to either LAN-A or LAN-B are known as Singly Attached Nodes (SANs).Ī Redundancy Box (RedBox) is used when a single interface node must be attached to both networks. If one LAN fails, a DANP destination can still receive a frame from the ![]() Receives both frames and discards the duplicating. A DANP source sends two frames simultaneously on both LANs. Two Ethernet networks (LANs) with similar topology are separated.Ī device that requires protection for data across the network connects to the two independent networks (LAN-A and LAN-B) isĬalled a Dual Attached Node implementing PRP (DANP). PRP allows a data communication network to prevent data transmission failures by providing two alternate paths for the traffic Redundancy (zero recovery time after failures) in Ethernet networks. Parallel Redundancy Protocol (PRP) is defined in the International Standard IEC 62439-3. ![]()
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