A partial ring that is not fully closed, and attached to a major ring, either directly, or via another subring. Acronyms, ring nodes, ring node states, default logging of basic state transitions on ex series switches, logical ring, fdb flush, traffic blocking and forwarding, rpl neighbor node, raps message blocking and forwarding, dedicated signaling control channel, raps message termination, revertive and. Ethernet ring protection switching configuration guide author. Included are details pertaining to bridged ring protection characteristics, architectures and the ring aps protocol. The s6700 supports ethernet ring protection switching erps, also referred to as g. Included are details pertaining to ethernet ring protection characteristics, architectures and the ring aps raps protocol. Basic constructs of ethernet ring protection switching. Other implementations include ethernet protection switching ring epsr by allied telesis which enhanced eaps to provide full protected transport of ip triple play services voice, video and internet traffic for xdslfttx deployments. Included are details pertaining to bridged ring protection characteristics, architectures and the ring aps. It basically does just one thing allows easy ring topology without traffic loops. Network protection ethernet ring protection switching ethernet ring protection switching erps g.
Network protection ethernet ring protection switching ring nodes, ring node states, default logging of basic state transitions on ex series switches, logical ring, fdb flush, traffic blocking and forwarding, rpl neighbor node, raps message blocking and forwarding, dedicated signaling control channel, raps message termination, revertive and nonrevertive modes, multiple. Carrier ethernet configuration guide, cisco ios xe release. Wo2012120528a1 ethernet chain protection switching. The protection switching mechanisms and protocol supports a multi ring ladder network that consists of connected ethernet rings, however, that is not covered in this example. Major ring an ethernet ring that controls a full physical ring and is connected to the interconnection nodes on two ports, the ring abceda in the figure subring an ethernet ring that is connected to a major ring at the interconnection nodes. More particularly, the present invention provides a protection switching method and system of a node having communication failure in a ring, in a communication network. Ethernet technologies are rapidly gaining importance as a prevailing solution for carrier networks. Pdf ethernet ring protection for carrier ethernet networks. Erps ethernet ring protection switching, is a protocol defined by itut under g. Links in the ring will never form loops that fatally affect the network operation and services availability. Eaps uses domains to define a ring or multiple rings and a control vlan is creates. The protection switching mechanisms and protocol supports a multiringladder network that consists of connected ethernet rings. Ethernet ring protection switching erps helps achieve high reliability and network stability.
Protection switching functionality inasingle linkfailure andrecovery thefollowingfigureillustratesprotectionswitchingfunctionalityinasinglelinkfailure. Basic constructs of ethernet ring protection switching erps. Download as pdf basic constructs of ethernet ring protection switching introduction the erps is a loop resolution protocol, just like stp. Cfm monitored vlan, that is used as a control vlan. A port on a switching hub appears to an end station as another end station except that it does not consume a mac. Jun 10, 2012 the first rapsnr, rb message arrived at nodes c and d are not forwarded any further. Discover, configure, and troubleshoot ex series switches using junos space. Ethernet ring protection switching overview techlibrary. Eapsepsr is the most widely deployed ethernet protection switching solution deployed with major multivendor.
Ethernet ring protection switching, defined in itut g. A partial ring that is not fully closed, and attached to a major ring, either directly, or via another sub ring. Ethernet ring protection switching erps supports rapid protection and recovery in a ring topology. By itself, the subring does not constitute a closed ring. The ring network is restored to the normal state which is idle state. On switch 1, click erps to go to the ethernet ring protection switching page.
Explain the concepts of multiple spanning tree protocol mstp. This protocol can provide sub50ms protection and recovery switching for ethernet traffic in a ring topology and at the same time eliminating loops at the ethernet layer 2. Us20250753a1 method for protection switching in ethernet. Ethernet ring protection switching, defined in itut recommendation g. As the latest ring network protocol, erps was developed based on traditional ethernet mac and bridging functions and uses mature ethernet oam function and a ring automatic protection switching raps mechanism to implement. The present invention relates to a protection switching method in a communication network, the communication network including plurality of communication devices forming a linear chain and at least one nonerps ethernet ring protection switching device connecting terminal ports of the linear chain and thereby forming a ring. A method for protection switching in an ethernet ring network is provided. Aug 07, 2012 ciena expert marc holness talks about g. Multicast vlan registration mvr supports ip multicast. A switching hub is much different from a repeating hub. In an ethernet ring, without congestion, with all ethernet ring nodes in the idle state i. Eaps uses domains to define a ring or multiple rings and a.
Protection switching raps protocol is used to coordinate the protection actions over the ring. Breaking up the collision domains for higher performance a switching hub was introduced to avoid the problems of shared ethernet. This article outlines an ethernet ring protection switching mechanism and explains how its automatic protection switching aps protocol works. Ethernet ring protection for carrier ethernet networks. Pdf on dec 1, 2016, a s m asadujjaman and others published optimization of ethernet ring protection switching for adaptive modulation in carrier access network find, read and cite all the. The present invention is directed to the field of data communication networks. Forthcoming ethernet ring protection enhancementsto enhance features and performance of the first version of g.
The idea is to provide highly available ethernet switched rings commonly used in metro ethernet to replace legacy tdm based transport protection fiber rings. Pdf optimization of ethernet ring protection switching. Ethernet ring protection switching configuration guide. It is based on a working and a protection path between two end points.
Pdf optimization of ethernet ring protection switching for. Ethernet automatic protection switching eaps is used to create a fault tolerant topology by configuring a primary and secondary path for each vlan invented by extreme networks and submitted to ietf as rfc3619. Add the ring protection link rpl owner as shown, and click add new protection group. Explain the concepts of ethernet ring protection switching erps. Basic constructs of ethernet ring protection switching erps saran krishnan k. Unlike in stp, most of the erps parameters are management configured which link to block in the start etc. Pdf on dec 1, 2016, a s m asadujjaman and others published optimization of ethernet ring protection switching for adaptive modulation in carrier.
Extreme has their ethernet automatic protection switching eaps which can provide an ethernet ring capability. Figure 14 add new protection group switch 1 configuration figure 15 erps 1 switch 1. Ethernet ring protection switching summary recommendation itut g. Custom user access rights 15 levels static and lacp link aggregation. Ethernet ring protection switching in force prepublished superseded and withdrawn components. The protection switching mechanisms and protocol supports a multi ring ladder network that consists of connected ethernet rings. A ring with at least two nodes and a fully closed topology. Acx series,acx5096,acx5048,acx5000,mx series,ex series,qfx series. Unidirectional link detection udld monitors link connectivity and shuts down ports at both ends if unidirectional traffic is detected, preventing loops in stpbased networks ieee 802.
The protection switching mechanisms and protocol supports a multiringladder network that consists of connected ethernet rings, however, that is not covered in this example. May 06, 20 download as pdf basic constructs of ethernet ring protection switching introduction the erps is a loop resolution protocol, just like stp. According to an aspect, the protection switching method includes. Ethernet ring protection switching, or erps, is an effort at itut under g. Protection and resiliency mef reference wiki mef wiki. Understanding ethernet ring protection switching functionality.
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