Example: Device (config-red)# mode sso: Configures SSO. 12. 133，稱為WLC2。. . Enters redundancy configuration mode. Switch# show running-config. 48. x [S2C-build-v16x_throttle-4064-/. mode sso. With RPR+, the redundant supervisor engine is fully initialized and configured, which shortens the. configure interface address management 10. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. If you perform an online insertion and removal (OIR) of the module, the switch resets during the stateful switchover and the. 0SG and later releases. The default mode for the Cisco uBR10012 universal broadband router is SSO. Configurations. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Step 5:. SSO is supported in Cisco IOS Release 12. My Secondary Switch is in disable state despite its in SSO mode. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine. mode sso. Router# copy running-config startup-config %HA-5-MODE:Operating mode is sso, configured mode is sso. Example: Device(config-red)# mode sso: Configures stateful switchover. Example: Device(config-red)# exit: Exits redundancy. The mode sso command can be entered only from within redundancy configuration mode. 133 voor de tweede, WLC2 genoemd. 90. Router# show redundancy Redundant System Information : ----- Available system uptime = 39 minutes Switchovers system experienced = 1 Standby failures = 0 Last switchover reason = user forced Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled. Example: Device(config-red)# mode sso: Configures stateful switchover. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. Router(config)# mode sso. Step 2: mode sso. Upgrade the current active Supervisor. end. Configured Redundancy Mode = RPR. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Switch # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode =. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. The mode sso command can be entered only from within redundancy configuration mode. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. Enter configuration commands, one per line. Check if Switches are in SSO Mode 5. Usage Guidelines. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. 39. Connect with console to it and check which state it is in. running with image version 8. 11 peer-redundancy-management 10. 5 and the other is running 3. 12 255. This command supports Route Processor Redundancy Plus (RPR+) with the Cisco uBR10012 router. Enters redundancy configuration mode. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. = SSO Redundancy Mode (Configured) = SSO Redundancy State = Non Redundant Manual Swact = disabled (system is simplex (no peer unit)) Communications = Down Reason:. Check if There is Sufficient Available Memory on Flash 4. There are three modes in redundancy for the standby supervisor when native Cisco IOS Software is used: RPR-The show module command displays Cold. Router# configure terminal. end. The system has experienced 4 switchovers. x. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. auto-sync running-config. Device(config-red)# mode sso: Configures stateful switchover. Active WLC 上で SSO の mode を disable にする. Router# copy running-config startup-config If SSO mode cannot be established between the active and standby switches because of an incompatibility in the configuration file, a mismatched command list (MCL) is generated at the active switch and a reload into route processor redundancy (RPR) mode is forced for the standby switch. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. Usage Guidelines. 2. When a failover occurs, the standby device seamlessly takes over, starts performing traffic forwarding services, and maintains a dynamic routing table. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Step 5. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. 2. The Supervisor 7-E card has four uplink ports on its front panel. Hardware Mode = Duplex. end. If the router is configured for SSO mode, and the active RP fails before the standby is ready to switch over, the router will recover through a full system. 4 allows the access point (AP) to establish a CAPWAP tunnel with the Active WLC and share a mirror copy of the AP database with the Standby WLC. Enters redundancy configuration mode. Device # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode =. Step 4. Here are the steps: Step 1 Clear the offending configuration (that caused an MCL) while the standby supervisor engine is in standby cold (RPR) state. Redundancy may not work due to differences between the Cisco IOS releases. WLC のステータスや設定を確認する. Step 4: mode SSO Example: Router(config)# mode SSO: Configures SSO. Step 3 Perform write memory. (CSCec05612)Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide, Release 12. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. 131. In this CCNP ENCOR lesson, we will focus on this redundancy mechanism. end. A router in SSO redundancy mode checkpoints Layer 2 protocol states and line card operation. Step 4. Initiate a switchover using the command redundancy force-switchover. スタック構成をしているものは電源を片方の電源を抜くとトラップはとぶのですが. Example: Device (config-red)# mode sso: Configures SSO. 10. Step 1. ASR は2種類のRP redundancy modeがあります。 RPR Route Processor Redundancy とSSO Stateful Switchover になります。 RPR を使用すると、スタンバイ RP を設定することができます。RPR を設定する場合、 スタンバイ RP はブートアップ時に Cisco IOS ソフトウェアをロードし、スタンバイ モードで自身を初期化します. Step 5: exit. If the command is not found in. Cisco NSF with SSO allows for the forwarding of data packets to continue along known routes while the routing protocol information is being restored following a switchover. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. Step 2: mode sso. SSO functions in networking devices (usually edge devices) that support dual RPs. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Configured Redundancy. Supervisor Module Redundancy. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. 3SE (Catalyst 3850 Switches) 8 OL-30686-01. Save the configuration on the controller. The first two octets are always 169. Route Processor Redundancy is supported only on routers that support dual RSPs. Step 5: Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. SSO is supported in Cisco IOS Release 12. config redundancy mode sso. 102. 10. All unsaved configuration will be saved. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. With a Supervisor Engine 720, if all the installed switching modules have DFCs, enter the fabric switching-mode allow dcef-only command to disable the Ethernet ports on both supervisor engines, which ensures that all modules are operating in dCEF mode and simplifies switchover to the redundant supervisor engine. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. ※ このドキュメントでは AireOS 8. x（Catalyst 9200 スイッチ）コマンドリファレンス. end. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. The redundancy port in standalone controllers and the redundancy VLAN in Cisco WiSM2 are assigned. Step 4: mode sso. Cisco建议您熟悉Catalyst 9K交换机上的堆叠、堆叠式虚拟(SVL)和“捆绑包”与“安装”引导模式相关概念。. end. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Router(config)# mode sso. When the redundant supervisor engine is inserted, the active supervisor engine detects its presence, and the redundant supervisor engine boots into a partially-initialized state in RPR mode and a fully-initialized state in SSO mode. SSO Operation. SSO is supported in Cisco IOS Release 12. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. mode sso. C6807-XL#show redundancy Redundant System Information :----- Available system uptime = 21 hours, 41 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Simplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled. Step 5. Step 6: mode sso. Cisco StackWise Virtual operates stateful switchover (SSO) between the active and standby switches. Hardware Mode = Duplex. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. Table 13-5 details the redundancy modes you can configure on supported switch platforms. In Cisco Wireless LAN Controllers, redundancy is achieved in two ways— n+1 and AP SSO redundancy. 39. We were testing a WLC HA Pair failure scenario wherein we removed the RP port connection from Active WLC. Convert RPR to SSO mode, this will force a reboot on standby supervisor. n+1 redundant Mode—n number of power supply modules are active (n can be one to seven power supply modules). Cisco IOS Nonstop Forwarding (NSF) always runs with stateful switchover (SSO) and provides redundancy for Layer 3 traffic. mode SSO 5. Switch(config)# redundancy Switch(config-red)# mode sso Switch(config-red)# end Switch# show redundancy Redundant System Information : -----Available system uptime = 2 days, 2 hours, 39 minutes Switchovers system experienced = 0. Refer to the Catalyst 4500 Series Switch Cisco IOS Command Reference and related publications. 101. Example: Device (config-red)# mode sso: Configures SSO. Standby として動作していた WLC のポートを変更するか、コンフィグの初期化する. WLC のステータスや設定を確認する. redundancy 4. The Cisco RF Gateway 10 Supervisor Engine 7-E uplink ports are not recommended for data or management traffic in Supervisor Redundancy Mode. Example: Router(red-config)# mode sso: Sets the redundancy configuration mode to SSO. And the output of the "show redundancy" is: Hardware Mode = Duplex. Cisco 3504 Controllers. Example: Device (config-red)# end Controller # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications. n+1 redundant Mode—n number of power supply modules are active (n can be one to seven pput ower supply modules). RPR redundancy mode is used. With RPR, the backup supervisor engine is partially initialized and. Configuration on. 130，称为WLC1; 第二个地址为IP地址10. ATM SSO is not configurable and runs by default on networking devices configured with ATM and Redundancy Mode SSO. The available power is the total power capacity of all power supplies. Information About Redundancy. Device # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode =. 150. Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up client count = 115Enters global configuration mode. This chapter describes how to configure supervisor engine redundancy using Cisco nonstop forwarding (NSF) with stateful switchover (SSO). Example: Device(config-red)# mode sso: Configures stateful switchover. Switch(config-red)# end. #sh redundancy Redundant System Information :-----Available system uptime = 1 year, 7 weeks, 1 day, 2 hours, 8 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none. Step 6. Step 6. This step is complete when the chassis configuration is synchronized, as indicated by the Bulk sync succeeded message. The New High Availability feature i. Switch(config-red)# end. A router in SSO redundancy mode checkpoints Layer 2 protocol states and line card operation. Redundancy may not work due to differences between the Cisco. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. (NSF) with a stateful switchover (SSO) when a supervisor-level failure occurs. Stateful Switchover (SSO) is a redundancy feature that allows a Cisco device with two route processors to synchronise router configuration and control plane state information. The documentation set for this product strives to use bias-free language. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. Enter configuration commands, one per line. Configuring Route Processor Redundancy SSO Mode configure terminal redundancy mode sso main-cpu standby. Step 4. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Check if Auto-Boot is Enabled 6. Redundancy configuration (config-red)This command supports Route Processor Redundancy (RPR) with the Cisco uBR10012 router. Step 6. Router(config-red)# mode sso. 2(20)EWA and later releases. Example: Device#. Router# copy running. When you configure the controller for HA SSO, the Cisco 600 Series OfficeExtend Access Points are not supported. # redundancy Switch(config-red)# mode sso Switch(config-red)# end Switch# show redundancy states my state = 13 -ACTIVE peer. Step 2. Step 4. Returns to EXEC mode. Step 4. Example: Router(config)# router bgp 1000Example: Enabling 1:1 Redundancy Stack Mode; Example: Disabling 1:1 Redundancy; Example: Enabling 1:1 Redundancy Stack Mode. Router# copy running-config. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. Enters redundancy configuration mode. The default mode for the Cisco 12000 series routers is RPR. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Split Mode = Disabled Manual Swact = Enabled Communications = Up client count = 29 client_notification_TMR = 30000 milliseconds keep_alive TMR = 9000 milliseconds keep_alive count = 1 keep_alive threshold = 18 RF debug mask = 0x0 Configuring BGP. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. In our example we are using the following IP addresses: WLC Active. The mode sso command can be entered only from within redundancy configuration mode. The new High Availability (HA) feature (that is, AP SSO) set within the Cisco Unified Wireless Network software release version 7. Step 5. Redundancy may not work due to differences between the Cisco IOS releases. The show redundancy and show issu state commands verify that redundancy mode is enabled and that SSO and NSF are configured. Switchovers system experienced = 5. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Reason: Software version. 0. To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. To enable Cisco StackWise Virtual on a switch, use the stackwise-virtual command in the global configuration mode. The mode sso command can be entered only from within redundancy configuration mode. main-cpu. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Enters redundancy configuration mode. Sets the redundancy configuration mode to SSO on both the active and standby RP. High Availability SSO Deployment Guide for Cisco Catalyst 9800 Series Wireless Controllers, Cisco IOS XE Amsterdam 17. (Optional) Backup the Startup Config and Running Config files of the controllers. Operating Redundancy Mode = sso. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. mode sso. main-cpu. 1. 1. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. Switchover Time. Redundancy may not work due to differences between the Cisco. We will definitely upgrade are fus code. To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. Chapter 5 Configuring Supervisor Engine Redundancy Using RPR and SSO About Supervisor Engine Redundancy SSO supports stateful switchover of the following Layer 2 features. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. mode SSO Router(config)# mode SSO. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the supervisor modules to support SSO mode. Note Enabling SSO initiates a controller reboot. 05-25-2012 08:56 AM - edited 03-07-2019 06:54 AM. Redundancy Mode (Configured) = sso . Step 4: mode sso. redundancy mode sso. After changing the license boot level in sso, you only need to restart the standby engine. In Cisco Wireless LAN Controllers, redundancy is achieved in two ways— n+1 and AP SSO redundancy. HANDY#show redundancy Redundant System Information : ----- Available system uptime = 1 hour, 50 minutes Switchovers system experienced = 2 Standby failures = 0 Last switchover reason = active unit removed Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. mode sso. Example: Device(config-red)# mode sso: Configures stateful switchover. Step 3 Router# show running-config Verifies that SSO is enabled. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine. 61 /22. If controller1 is configured with 9. Redundancy State = sso . HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. Description. (Optional) Ensure network. 第一個IP地址10. Only the top two ports are. redundancy mode sso ! ip cef distributed mpls ldp graceful-restart mpls label protocol ldp ip vrf vpn1 rd 100:1 route-target export 100:1 route-target import 100:1 no mpls aggregate-statistics ! interface Loopback0 ip address 10. The mode sso command can be entered only from within redundancy configuration mode. To. reload Table 7-3 Software Redundancy Options for Cisco ASR 1002 and 1004 Routers Router Default HA Setting Options with 2 GB or DRAM Options with 4 GB or DRAM Cisco ASR 1002 Router None None None, RPR, SSO Cisco ASR 1004 Router None None None, RPR, SSO3) Issue the reset system. Cisco ASR1006 supports the stateful failover from an active Enhanced Services Processor (ESP) to a standby and from an active Route Processor to a standby on the same box. show redundancy states. This example shows how to set the redundancy mode to SSO: Device(config)# redundancy Device(config-red)# mode sso Device(config-red)# policy config-sync prc reload. show redundancy >>>>>> check here for mode you have configured. The default mode for the Cisco 7500 series routers is HSA. Configures SSO. The Cisco Nexus 9504, 9508,. The switch is supports route processor redundancy (RPR). Step 3. Redundancy may not work due to differences between the Cisco IOS releases. We have two Cisco WLC 8540 in HA pair. The following example displays verification that the system is in SSO mode and that slot A—RP A is the active R, and slot B—RP B is the standby RP. Communications = Up . Switch # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications = Down. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. The mode sso command can be entered only from within redundancy configuration mode. Further, if the active RP fails, no change occurs to the HSRP group itself and traffic continues to be forwarded through the current active gateway device. The state of these features is preserved between both the active and standby. Step 3. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. Example: Device(config-red)# exit: Exits redundancy. Check if Switches are in SSO Mode 5. 255. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. SSO Dual-Route Processors and Cisco Nonstop Forwarding. 2 255. The mode sso command can be entered only from within redundancy configuration mode. You usually will find the two redundancy terms together, as "SRM with SSO. Step 5. . Enters redundancy configuration mode. 2(20)EWA and later releases. If a VSS does not meet the requirements for SSO redundancy, it will be incapable of establishing a relationship with the peer switch. 0. 2(20)EWA and later releases. Router# configure terminal Router(config)# redundancy Router(config-red)# mode sso Router(config-red)# exit Router# copy running-config startup-config ヒント Cisco Catalyst 6500 シリーズ スイッチの詳細（設定例およびトラブルシューティング情報を含む）については、次のページに示される. Router# show redundancy Redundant System Information : ----- Available system uptime = 39 minutes Switchovers system experienced = 1 Standby failures = 0 Last switchover reason = user forced Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled. To reload a single supervisor in the Quad-Supervisor setup enter the hw-module switch switch-number subslot subslot-number oir power-cycle command in privileged. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :----- Active Location = slot 1/2 Current Software state = ACTIVE Uptime in current state = 36 minutes Image Version = Cisco IOS Software, s2t54 Software (s2t54-ADVENTERPRISEK9-M),SSO is supported in Cisco IOS Release 12. 3 allows the AP to establish CAPWAP tunnel with Active WLC and share mirror copy of AP database with Standby WLC. 3. † Software upgrade. Step 2 Router(config-red)# mode sso Configures SSO. Step 5. Since we couldnt afford downtime I rebooted standby controller that was in maintenance mode and it was able to boot in sso redundant mode. This example shows how to set the redundancy mode to SSO: Device (config)# redundancy Device (config-red)# mode sso Device (config. Cat-6509#show redundancy Redundant System Information : ----- Available system uptime = 10 hours, 12 minutes Switchovers system experienced = 1 Standby failures = 1 Last switchover reason = user initiated Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso!--- This verifies that software has set the. . e. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. Enters redundancy configuration mode. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the supervisor modules to support SSO mode. Step 4: show running-config Example: Enters redundancy configuration mode. SSO-The show module command displays Hot. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine. Route Processor Redundancy (RPR) refers to the provision of support for the redundancy feature. In this step, the VSS standby chassis reboots, reloads with the new image, and initializes as the VSS standby chassis in SSO redundancy mode, running the new image. SSO provides RP redundancy by establishing one of the RPs as the active processor and the other RP as. Stateful Switchover is particularly useful in conjunction with Nonstop Forwarding. I will show you how to make a wireless-controller-cluster. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. restart the Wireless controller in maintenance mode. 48. and the redundant supervisor engine boots into a partially-initialized state in RPR mode and a fully-initialized state in SSO mode. 4. Sets the redundancy configuration mode to SSO on both the active and standby RP. Step 4. 59. Step 5. Example: Router(config-red)# mode sso. 6. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. Supervisor engine redundancy allows OIR of the redundant supervisor engine for maintenance. Heres the redundancy cfg: redundancy. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any given time, while. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. auto-sync config-register. In Cisco Wireless LAN Controllers, high availability is achieved with redundancy. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. Switches can run multiple route processors (supervisors) in 3 modes: RPR (Route Processor Redundancy) RPR+ (Route Processor Redundancy plus) SSO (Stateful Switchover) While RPR was the 1 st one to be introduced, RPR+ came in later and the latest offering was SSO. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. Verify the redundancy status using command : show redundancy summary 5. 147 as the Redundancy Management IP and controller2 with 9. NSF Operation. Router(config-red)# end.