AX Series ALAXALA Ring Configuration Guide Edition 1 Copyright © 2008, ALAXALA Networks Corporation. All rights reserved.
ALAXALA Ring Configuration Guide (Edition 1) Preface This document provides information for configuring a system that makes full use of the Autonomous Extensible Ring Protocol supported by the AX series switches (AX6700S/AX6300S, AX3600S, and AX2400S). This document contains an overview of how the protocol works, how to set up the protocol in a model configuration, notes, and other information. Related documents - AX series product manuals (http://www.alaxala.com/en/techinfo/manual/index.
ALAXALA Ring Configuration Guide (Edition 1) Contents 1. 2. 3. 4. 5. 6. What is the Ring Protocol? .................................................................................................. 4 1.1 Overview of the Ring Protocol.....................................................................................................4 1.2 Features of the Ring Protocol .....................................................................................................5 1.3 Glossary ..............
ALAXALA Ring Configuration Guide (Edition 1) 1. 1.1 What is the Ring Protocol? Overview of the Ring Protocol The Autonomous Extensible Ring Protocol (Ring Protocol) is an ALAXALA-proprietary Layer 2 network redundancy protocol, which detects failures and performs high-speed path switching in response to detected failures in a network where switches are connected in rings.
ALAXALA Ring Configuration Guide (Edition 1) 1.2 Features of the Ring Protocol (1) Ethernet-based ring network The Ring Protocol is an Ethernet-based Layer 2 network redundancy protocol. Whereas conventional ring networks typically use dual-link fiber optics such as with FDDI, you can use the Ring Protocol to build ring networks using Ethernet.
ALAXALA Ring Configuration Guide (Edition 1) Ring VLAN group 8 9 10 Ring VLAN status FWD (Forwarding)/ BLK (Blocking) Health-check frame (HC) Flush control frame 11 12 13 14 Forced flooding (only available in chassis-type switches) Single ring 21 22 Multi-ring Shared link member node (Shared node) Shared link Shared link monitoring ring (O-shaped ring) Shared link non-monitoring ring (C-shaped ring) Shared link monitoring master node Shared link non-monitoring master node Virtual link Virtual link
ALAXALA Ring Configuration Guide (Edition 1) 2. 2.1 Operation of the Ring Protocol Network configuration This section describes types of network configurations in which the Ring Protocol is used. (1) Single ring configuration A ring configuration made up of one master node and several transit nodes is called a single ring configuration. The single ring configuration is a basic configuration for the Ring Protocol.
ALAXALA Ring Configuration Guide (Edition 1) (3) Multi-ring configurations with shared links When neighboring rings are connected at two or more nodes as contact points, multiple rings share a link. This link is called a shared link, and a multi-ring configuration with this type of link is called a multi-ring configuration with shared links. When different VLANs are used for data frame transfer in each neighboring ring (VLAN-excluded), the rings run as independent single rings.
ALAXALA Ring Configuration Guide (Edition 1) 2.2 Single ring operation This section describes how the Ring Protocol works in a single ring. 2.2.1 Normal operation During normal operation, the Ring Protocol works in a single ring as follows: Primary port Ring VLAN: FWD T1 Secondary port Ring VLAN: BLK T5 M HC M: Master node T1 - T5: Transit node HC: Health-check frame T2 T3 Data on the data transfer VLAN T4 HC on the control VLAN Figure 2.
ALAXALA Ring Configuration Guide (Edition 1) 2.2.2 Operation during a failure When a failure occurs in a single ring, the Ring Protocol works as follows: Ring VLAN: BLK -> FWD T1 M T5 HC Flush control frames T2 T3 T4 A failure occurs. Figure 2.
ALAXALA Ring Configuration Guide (Edition 1) 2.2.3 Operation during recovery from a failure When a failure is resolved in a single ring, the Ring Protocol works as follows: Ring VLAN: FWD -> BLK T1 M T5 HC Flush frames T2 control T3 T4 The failure is recovered. Figure 2.
ALAXALA Ring Configuration Guide (Edition 1) 2.3 2.3.1 Operation in multi-ring configuration with shared links Normal operation During normal operation in a multi-ring with shared links, the Ring Protocol works as shown in the figure below. If the multi-ring has no shared links, each ring runs in the same way as a single ring does.
ALAXALA Ring Configuration Guide (Edition 1) 2.3.2 Operation during a failure In the multi-ring, there are the following three types of failure: (a) Non shared-link failure in a shared link monitoring ring (O-shaped ring) (b) Non shared-link failure in a shared link non-monitoring ring (C-shaped ring), and (c) Shared link failure In types (a) and (b), the basic operation is the same as the single ring operation.
ALAXALA Ring Configuration Guide (Edition 1) 2.3.3 Operation during recovery from a failure In the multi-ring, there are the following types of failure recovery: (a) Non shared-link failure recovery in a shared link monitoring ring (O-shaped ring) (b) Non shared-link failure recovery in a shared link non-monitoring ring (C-shaped ring) These failure recovery operations are basically the same as the single ring operation.
ALAXALA Ring Configuration Guide (Edition 1) 2.4 Operation when the Ring Protocol and STP are used together A network in which the ring network and STP are used together runs by using a method called the virtual link. This method allows STP control frames (BPDUs) to be transferred on the ring network and entries in the MAC address table for the ring ports to be cleared when a topology is changed. The following figure shows an overview of using the ring network with STP by using the virtual link. 2.4.
ALAXALA Ring Configuration Guide (Edition 1) 2.4.2 Operation during a failure Failure operations in a network using both Ring Protocol and STP can be categorized into the following types: (1) When a line failure occurs in the ring A failure operation is performed in the ring, so the downstream STP operation is not affected. The failure operation in this case is the same as the one in the single ring and multi-ring configurations described above. See the related sections.
ALAXALA Ring Configuration Guide (Edition 1) (3) When a node fault occurs in the Ring-STP node working as the root bridge In this case, both the Ring Protocol and STP have a failure. Because the ring network detects the fault earlier than STP does, the ring network performs a failure operation first, followed by a failure operation by STP. After STP changes the topology, the other Ring-STP node in the base sends flush frames into the ring network. Figure 2.
ALAXALA Ring Configuration Guide (Edition 1) 2.5 Operation when the Ring Protocol and GSRP are used together The Ring Protocol supports combined use with GSRP. GSRP provides redundancy by securing a communication path via another switch in the same network even if one switch has a fault. To build a network that uses both Ring Protocol and GSRP, you use the virtual link described in section 2.4, which allows combined use of the Ring Protocol and STP.
ALAXALA Ring Configuration Guide (Edition 1) 2.6 When a line is down in only one direction In some cases, if the auto-negotiation is disabled in the port configuration, or if a relay device such as a media converter is connected to the master node or between transit nodes in the ring, the line cannot be put into link-down state in response to the line being down in only one direction.
ALAXALA Ring Configuration Guide (Edition 1) No. Item 10 11 12 13 14 15 16 17 Supported specifications Format Chassis-type Box-type Proprietary format Control frame Health-check frame Flush control frame Monitoring is performed by Ring failure monitoring method periodically circulating and receiving health-check frames.
ALAXALA Ring Configuration Guide (Edition 1) 2.7.2 Supported specifications for the virtual link When you use the virtual link to implement the Ring Protocol with STP or GSRP, you must satisfy the supported specifications for the virtual link in addition to the supported specifications shown in Table 2.7-1. You can use the virtual link regardless of a ring configuration or node type. Table 2.7-2 Supported specifications for the virtual link No.
ALAXALA Ring Configuration Guide (Edition 1) 2.7.3 Compatibility between the Ring Protocol and other protocols The following table lists the protocols compatible and incompatible with the Ring Protocol within a device. Table 2.
ALAXALA Ring Configuration Guide (Edition 1) 3. Examples of Ring Protocol Systems The Ring Protocol offers a simple configuration and high-speed redundant path switching, allowing you to configure a path redundant system with the smallest possible number of required ports and lines. Therefore, The Ring Protocol is very suitable for the needs of the core network. This chapter provides some examples of practical system applications. 3.
ALAXALA Ring Configuration Guide (Edition 1) (2) Configuration in which devices on every other floor are connected This configuration is the same as the basic configuration above in the way that a single ring configuration is used to connect the core switches and routers to the distribution or access switches. However, this configuration connects ring node devices on every other floor as shown in the following figure, allowing you to keep the wiring between ring nodes to approximately two-floor lengths.
ALAXALA Ring Configuration Guide (Edition 1) 3.1.1 System configuration example Figure 3.1-3 shows a configuration example of a relatively small-sized system. In this example, only box-type devices are used to build the backbone network, and forwarding between access and distribution switches is basically performed on Layer 2.
ALAXALA Ring Configuration Guide (Edition 1) Purpose Ring control Data communication VLAN ID 2 101-110 FL3: AX2400S 0/23 VLAN101-11 FL2: AX2400S 0/23 VLAN101-11 Terminals on floor 2 0/1 0/3 VLAN2, 101-110 Ring Protocol Access SW (L2SW) FL1: AX2400S 0/23 VLAN101-11 Terminals on floor 1 0/1 0/3 VLAN2, 101-110 0/1 0/3 VLAN2, 101-110 VLAN 106-110 block Access SW (L2SW) C1: AX2400S 0/23 VLAN101-11 Server 0/1 0/3 VLAN2, 101-110 VLAN 101-105 block Access SW (L2SW) Figure 3.
ALAXALA Ring Configuration Guide (Edition 1) 3.1.2 Important points on constructing a system This section explains the important points on constructing a system. (1) The Spanning Tree Protocol (STP) must be disabled. By default, the STP runs by means of PVST+ on AX series switches. However, you need to disable STP because this configuration does not use STP. (2) In addition to VLANs for data communication, a control VLAN is required.
ALAXALA Ring Configuration Guide (Edition 1) (5) The mode and parameters must be considered when both Ring Protocol and link aggregation are used. When you use the link aggregation on the port specified as a ring port, note the following: (a) We recommend that you use the static link aggregation mode.
ALAXALA Ring Configuration Guide (Edition 1) Configuring the ring port #2 (FL3) interface gigabitethernet 0/3 switchport mode trunk switchport trunk allowed vlan 2-3,101-105,106-110 axrp-ring-port 1 axrp-ring-port 2 axrp-primary-port 2 vlan-group 2 Configuring VLAN mapping (common settings) axrp vlan-mapping 1 vlan 101-105 axrp vlan-mapping 2 vlan 106-110 Configuring the ring axrp 1 mode master control-vlan 2 vlan-group 1 vlan-mapping 1 interface gigabitethernet 0/3 switchport mode trunk switchport trunk
ALAXALA Ring Configuration Guide (Edition 1) Though the explanation above assigned VLANs individually for each floor, we recommend that you decide how to assign VLANs depending on your requirements, such as a VLAN for a department spanning multiple floors.
ALAXALA Ring Configuration Guide (Edition 1) Settings of C1 Configuring the VLAN mappings (config)# axrp vlan-mapping 1 vlan 101-105 (config)# axrp vlan-mapping 2 vlan 106-110 Adds VLAN101 through VLAN105 to vlan-mapping 1 for the ring. Adds VLAN106 through VLAN110 to vlan-mapping 2 for the ring.
ALAXALA Ring Configuration Guide (Edition 1) Settings of FL1 (FL2 and FL3 have the same settings) Configuring the VLAN mappings (config)# axrp vlan-mapping 1 vlan 101-105 (config)# axrp vlan-mapping 2 vlan 106-110 Adds VLAN101 through VLAN105 to vlan-mapping 1 for the ring. Adds VLAN106 through VLAN110 to vlan-mapping 2 for the ring. (Important points on constructing a system (3)) Configuring the ring (config)# axrp (config-axrp)# (config-axrp)# (config-axrp)# (config-axrp)# 3.
ALAXALA Ring Configuration Guide (Edition 1) 3.2.1 Example of a multi-ring system configuration with shared links (VLAN-shared) This system uses VLANs common to rings in the multi-ring configuration and has shared links. In this case, a combination of the shared link monitoring ring and shared link non-monitoring ring forms the multi-ring configuration.
ALAXALA Ring Configuration Guide (Edition 1) Logical configuration in building A 1000BASE-T Building AF2: AX2400S 0/23 VLAN50-99 Building A Terminals on floor 2 0/1 0/3 VLAN11, 50-99 Access SW (L2SW) AF1: AX2400S 0/23 VLAN50-99 Building A Terminals on floor 1 0/1 0/3 VLAN11, 50-99 RING11 Access SW (L2SW) 10GBASE-R VLAN50-99 block AC1: AX6300S 2/5 VLAN5, 50-99 RING11 master 2/1 1/2 VLAN11, 50-99 5, 10, 11, 50-99 1/1 NIF1: NH10G-8RX NIF2: NH1G-24T AC2: AX6300S 2/5 VLAN5, 50-99 RING5 AS1: AX3
ALAXALA Ring Configuration Guide (Edition 1) Logical configuration in building B Building 1000BASE-T 0/3 0/1 VLAN12, 50-99 0/3 0/1 VLAN12, 50-99 RING12 BF2: AX2400S 0/23 VLAN50-99 1/1 2/1 VLAN10, 12, 50-99 VLAN12, 50-99 RING12 Master Building B Terminals on floor 2 Access SW (L2SW) Building B Terminals on floor 1 BF1: AX2400S 0/23 VLAN50-99 VLAN 50-99 block To AC1 1/2 in the building A Access SW (L2SW) BC1: AX6300S 1/2 NIF1: NH10G-8RX NIF2: NH1G-24T 10, 12 Shared link 1/1 2/1 VLAN10,
ALAXALA Ring Configuration Guide (Edition 1) 3.2.2 Important points on constructing a system (1) The Spanning Tree Protocol (STP) must be disabled. By default, STP by means of PVST+ runs on AX series switches. However, you need to disable STP because this configuration does not use STP. (2) In addition to VLANs for data communication, a control VLAN is required.
ALAXALA Ring Configuration Guide (Edition 1) (5) The mode and parameters must be considered when both Ring Protocol and link aggregation are used. When you use the link aggregation on the port specified as a ring port, note the following: (a) We recommend that you use the static link aggregation mode.
ALAXALA Ring Configuration Guide (Edition 1) (7) The maximum number of multi-rings must be taken into account. If a chassis-type switch (AX6700S/AX6300S series product) is the master node of a shared link non-monitoring ring, the maximum number of configurable multi-rings on the device is less than 16. Specifically, a shared link non-monitoring ring with the chassis-type master node is counted as two rings.
ALAXALA Ring Configuration Guide (Edition 1) 3.2.3 Configuration example This section is a configuration guide that shows configuration examples of devices AC1, AC2, AF1, AF2, AS1, BC1, BC2, BF1, and BF2 to show the configuration tips. For all configurations, see Appendix 1. (1) Building A core node settings (device AC1: AX6300S) Settings of AC1 (backbone ring/building A's shared node and the ring master for building A) Disabling the spanning tree (config)# spanning-tree disable Disables the spanning tree.
ALAXALA Ring Configuration Guide (Edition 1) Settings of AC1 (backbone ring/building A's shared node and the ring master for building A) Configuring the rings (config)# axrp 5 Starts the configuration of the ring with RING ID 5 (Ring 5). (config-axrp)# mode transit ring-attribute Specifies the node as a transit and shared node for the shared link rift-ring-edge 1 non-monitoring ring. (config-axrp)# control-vlan 5 Specifies VLAN5 as the control VLAN.
ALAXALA Ring Configuration Guide (Edition 1) Settings of AC2 (backbone ring/building A's shared node and the backbone ring master) (config)# axrp vlan-mapping 1 vlan 50-99,1000 Adds VLAN50 through VLAN99 to vlan-mapping 1 for the ring. (Important points on constructing a system (3)) Configuring the rings (config)# axrp 5 Starts the configuration of the ring with RING ID 5 (Ring 5).
ALAXALA Ring Configuration Guide (Edition 1) (3) Building A distribution node settings (device AS1: AX3600S) Settings of AS1 (node for the server farm in building A) Disabling the spanning tree (config)# spanning-tree disable Disables the spanning tree. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 5, 50-99 Specifies VLANs to be used.
ALAXALA Ring Configuration Guide (Edition 1) (4) Building A distribution node settings (device AF1: AX2400S) Settings of AF1 (ring node in building A) Disabling the spanning tree (config)# spanning-tree disable Disables the spanning tree. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 11,50-99 Specifies VLANs to be used.
ALAXALA Ring Configuration Guide (Edition 1) (5) Building A distribution node settings (device AF2: AX2400S) The settings for this node are the same as those for device AF1 as shown in section (3) above. (6) Building B core node settings (device BC1: AX6300S) Settings of BC1 (backbone ring/building B's shared node and the ring master for building B) Disabling the spanning tree (config)# spanning-tree disable Disables the spanning tree.
ALAXALA Ring Configuration Guide (Edition 1) (7) Building B core node settings (device BC2: AX6300S) Settings of BC2 (backbone ring/building B's shared node) Disabling the spanning tree (config)# spanning-tree disable Disables the spanning tree. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 10,12,50-99 Specifies VLANs to be used.
ALAXALA Ring Configuration Guide (Edition 1) (8) Building B distribution node settings (device BF1: AX2400S) Settings of BF1 (ring node in building B) Disabling the spanning tree (config)# spanning-tree disable Disables the spanning tree. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 12,50-99 Specifies VLANs to be used.
ALAXALA Ring Configuration Guide (Edition 1) 3.3 Example of combined use of the Ring Protocol and STP in a building network The ALAXALA Ring Protocol can be used with STP. This provides various functions, such as simultaneous use of redundant configuration through STP and load balancing with distributed VLANs by the Ring Protocol. 5F Switch (e.g.
ALAXALA Ring Configuration Guide (Edition 1) 3.3.1 Example of a system configuration using the Ring Protocol and STP for load balancing Using the ALAXALA Ring and STP at the same time allows you to configure a network that provides redundancy in both protocols and also implements load balancing. The following figure shows an example of such configuration.
ALAXALA Ring Configuration Guide (Edition 1) Floor 2 -> Base 2 (Virtual link 2) F21 AX2400S 0/23 VLAN201-20 PVST+ F2: AX1200S 0/1 201 0/25 0/26 VLAN201-202 F20: AX2400S 0/23 VLAN201-20 0/2 202 Floor 1 -> Base 1 (Virtual link 1) F11: AX2400S 0/23 VLAN101-10 Single STP F1: AX1200S 0/1 101 0/25 0/26 VLAN101-102 F10: AX2400S 0/23 VLAN101-10 0/2 102 0/1 0/3 VLAN2, 11-12, 100-102, 201-202 Root bridge 2 0/1 0/3 VLAN2, 11-12, 100-102, 201-202 Ring Protocol 0/1 0/3 VLAN2, 11-12, 100-102, 201-202 0
ALAXALA Ring Configuration Guide (Edition 1) Load balancing is achieved by distributing traffic between the server and the terminals on each floor. Specifically, you need to configure load balancing as follows: (1) Path between terminals on floor 1 and the server - On the backbone (ring) network, use the VLAN mapping that contains the VLANs used on floor 1 (VLANs in the 100s) and configure the primary port of the ring for the path between devices C10 and F10.
ALAXALA Ring Configuration Guide (Edition 1) (2) Path between terminals on floor 2 and the server - On the backbone (ring) network, you use the VLAN mapping that contains the VLANs used on floor 2 (VLANs in the 200s) and configure the primary port of the ring for the path between devices C10 and C11. - For STP on base 2 (floor 2), you adjust the bridge ID so that device F21 can be the root bridge. (By default, devices F20 and F21 have a bridge priority of 0, and device F2 has a bridge priority of 32768.
ALAXALA Ring Configuration Guide (Edition 1) 3.3.2 Important points on constructing a system (1) Specify the STP mode on a ring node to allow STP to run on the node and disable STP on the node if the node does not use STP. By default, STP by means of PVST+ runs on AX series switches. To change the STP type to Rapid PVST+ or Rapid (single) STP, specify the applicable mode. Disable STP for ring nodes that do not use STP. (2) In addition to VLANs for data communication, a ring control VLAN is required.
ALAXALA Ring Configuration Guide (Edition 1) 3.3.3 Configuration example This section is a configuration guide that shows configuration examples of devices C10, C11, F10, F11, F20, F21, S1, F1, and F2 to show the configuration tips. For all configurations of the devices, see Appendix 1.
ALAXALA Ring Configuration Guide (Edition 1) Settings of core switch C10 Setting the virtual link (config)# axrp virtual-link 10 vlan 100 Sets VLAN100 as a virtual link VLAN with the virtual link ID 10.
ALAXALA Ring Configuration Guide (Edition 1) Settings of core switch C11 Setting IP addresses (config)# interface vlan 11 (config-if)# ip address 192.168.1.2 255.255.255.0 (config-if)# vrrp 11 ip 192.168.1.1 (config)# interface vlan 12 (config-if)# ip address 192.168.2.1 255.255.255.0 (config-if)# vrrp 12 ip 192.168.2.1 (config)# interface vlan 101 (config-if)# ip address 192.168.11.2 255.255.255.0 (config-if)# vrrp 101 ip 192.168.11.1 (config)# interface vlan 102 (config-if)# ip address 192.168.12.2 255.
ALAXALA Ring Configuration Guide (Edition 1) (3) Settings of device F10: AX2400S Settings of floor 1 distribution switch F10 Configuring the spanning tree (config)# spanning-tree single mode rapid-stp Specifies the Rapid STP spanning tree protocol. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 2,11-12,100-102,201-202 Specifies VLANs to be used.
ALAXALA Ring Configuration Guide (Edition 1) (4) Settings of device F11: AX2400S Settings of floor 1 distribution switch F11 Configuring the spanning tree (config)# spanning-tree single mode rapid-stp (config)# spanning-tree single priority 4096 Specifies the Rapid STP spanning tree protocol. (Important points on constructing a system (1)) Sets the bridge priority of the single STP to 4096.
ALAXALA Ring Configuration Guide (Edition 1) (5) Settings of device F20: AX2400S Settings of floor 2 distribution switch F20 Configuring the spanning tree (config)# spanning-tree mode rapid-pvst (config)# spanning-tree vlan 201-202 priority 4096 Specifies the Rapid PVST+ spanning tree protocol. (Important points on constructing a system (1)) Sets the bridge priority of VLAN201 and VLAN202 to 4096.
ALAXALA Ring Configuration Guide (Edition 1) (6) Settings of device F21: AX2400S Settings of floor 2 distribution switch F21 Configuring the default settings of the spanning tree (config)# spanning-tree mode rapid-pvst Specifies the Rapid PVST+ spanning tree protocol. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 2,11-12,100-102,201-202 Specifies VLANs to be used.
ALAXALA Ring Configuration Guide (Edition 1) (7) Settings of device S1: AX2400S Settings of server farm access switch S1 Configuring the default settings of the spanning tree (config)# spanning-tree mode rapid-pvst Specifies the Rapid PVST+ spanning tree protocol. (Important points on constructing a system (1)) Configuring the data transfer VLANs (config)# vlan 11-12 Specifies VLAN11 and VLAN12 to be used for data transfer.
ALAXALA Ring Configuration Guide (Edition 1) (9) Settings of device F2: AX1200S Settings of floor 2 access switch F2 Configuring the default settings of the spanning tree (config)# spanning-tree mode rapid-pvst Specifies the Rapid PVST+ spanning tree protocol. (Important points on constructing a system (1)) Configuring the control VLAN and data transfer VLANs (config)# vlan 201-202 Specifies VLAN201 - VLAN202 to be used.
ALAXALA Ring Configuration Guide (Edition 1) 3.4 Other application configuration examples This section provides examples of other possible Ring Protocol applications. (1) Access switch redundancy in a building network (multi-ring application [1]) If you use AX2400S series products as access switches, the Ring Protocol can provide redundancy for those access switches. Redundancy is achieved through the multi-ring configuration with the backbone ring as described below.
ALAXALA Ring Configuration Guide (Edition 1) (2) Application for a large building (multi-ring application [2]) The number of nodes in a ring is theoretically unlimited regardless of whether the nodes are chassis-type (AX6700S/AX6300S series) or box-type (AX3600S and AX2400S) devices. Therefore, you can basically increase the number of ring nodes according to the number of floors.
ALAXALA Ring Configuration Guide (Edition 1) (3) High availability network by a dual ring (application combined with GSRP) You can use two rings to build a higher availability system that has a dual backbone network. You can use the Layer 3 redundancy switching functionality of GSRP by configuring distribution layers (networks on each floor in the figure below) with GSRP and using different VLANs for the rings and GSRP segments to operate them independently.
ALAXALA Ring Configuration Guide (Edition 1) 4. 4.1 Notes Prohibited Ring Protocol configurations (1) Configuration with multiple master nodes in the same ring If one ring has multiple master nodes (Figure 4.1-1), depending on the positions of the logically blocked secondary ports of the master nodes, communication might be blocked or a failure might not be detected properly. M1 T1 T2 M2 T1 cannot communicate with other nodes due to logical blocking by the two master nodes.
ALAXALA Ring Configuration Guide (Edition 1) (3) Configuration with a shared link non-monitoring master node on the shared link If a shared link consists of three or more nodes, the shared link non-monitoring master node cannot be a node on the shared link.
ALAXALA Ring Configuration Guide (Edition 1) (5) Configuration with three or more ring nodes when using the Ring Protocol and STP together If you use the Ring Protocol and STP together, a base can have one or more STP nodes but cannot have three or more ring nodes for each STP node. R R R R R R R S S Three ring nodes + one STP If you use the Ring Protocol with STP, a base can only have two ring nodes per STP node. The other configurations are not supported.
ALAXALA Ring Configuration Guide (Edition 1) 4.2 Notes When you use the Ring Protocol, you need to carefully read the notes provided in the following manuals and in this section to design your network. - Notes in the manuals AX6700S/AX6300S Configuration Guide Vol. 1 AX3600S, AX2400S Configuration Guide Vol. 1 4.2.1 21.6 Notes on Ring Protocol usage 23.1.5 Notes on using of the Ring Protocol and spanning trees together 23.2.6 Notes on running the Ring Protocol and GSRP together 20.
ALAXALA Ring Configuration Guide (Edition 1) (3) Consistency with VLANs belonging to MST instances when using MSTP When you use the Ring Protocol with the Multiple Spanning Tree Protocol, all the VLANs in the VLAN mappings for the Ring Protocol must correspond with the VLANs belonging to MST instances for MSTP. VLANs that do not correspond are put into Blocking status, possibly causing communication problems. 4.2.
ALAXALA Ring Configuration Guide (Edition 1) 5. 5.1 Setting Various Parameters Parameter descriptions You can specify the following parameters when you configure a ring network. (1) health-check interval This parameter specifies the interval for sending health-check frames from master nodes or terminal shared nodes in a shared link non-monitoring ring.
ALAXALA Ring Configuration Guide (Edition 1) in fallback state due to the failure. 5.2 Parameter recommendations for chassis and box-type switch mixed networks If you configure a ring that contains both chassis and box-type switches, you need to decide your parameter values based on the performance of your box-type switches. This also applies to the case where you use a chassis-type switch as the master node and box-type switches as transit nodes. Table 5.2-1 shows the recommended parameter values.
ALAXALA Ring Configuration Guide (Edition 1) 6. Operation Management This chapter describes operation management, including operation commands used when you build a network with the Ring Protocol and how to isolate the cause of a failure. 6.1 Operation command You can use the following operation commands for the Ring Protocol: ・ show axrp Shows statistics such as the ring status and ring port status. ・ clear axrp Clears ring statistics. ・ restart axrp Restarts the Ring Protocol.
ALAXALA Ring Configuration Guide (Edition 1) 6.2 Isolating the cause of a ring failure If a failure occurs in the Ring Protocol, a message is output to the log, indicating that a failure has occurred and the failure operation has started. Another message is output to the log when the protocol recovers from the failure, indicating that the recovery operation has started.
ALAXALA Ring Configuration Guide (Edition 1) Appendix. Configuration Files This appendix shows the example configurations explained in this guide. Text files containing configurations of devices used in the network configuration diagrams in Chapter 3 are attached to this file. (To refer to the attached files, you need Adobe Acrobat 5.0 or later or Adobe Reader 6.0 or later.) For details of each configuration, see the attached files with the corresponding names shown below. 3.
Edition 1 – September 24, 2008 Network Technical Support ALAXALA Networks Corporation Shin-Kawasaki Mitsui Bldg West Tower, 890 Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0058, JAPAN http://www.alaxala.com/en/index.