Router(config)# mode sso. Configured Redundancy Mode = sso. On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. After this the WLC will reboot and come back as Primary and Standby WLC again. Usage Guidelines. auto-sync config-register. 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. Step 4. It is setup in the below settings but I am not running a pair of these switches. SSO functions in networking devices (usually edge devices) that support dual RPs. Example: Router(red-config)# mode sso: Sets the redundancy configuration mode to SSO. The DHCP high availability features are enabled by default when the redundancy mode of operation is set to SSO. 1. Enters redundancy configuration mode. 56. I performed a failover test (by executing command "redundancy force-switchover" and after the standby controller rebooted, HA seems to no longer be working: From active controller. Router# copy running-config. AP SSO set within the Cisco Unified Wireless Network software release v7. 4. Step 4. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. Router(config-red)# end. Management: 192. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. Enters redundancy configuration mode. Reason: Software version. Verify the redundancy status using command : show redundancy summary 5. Redundant System Information :----- Available system uptime = 44 weeks, 2 days, 6 hours, 12 minutes. 5 and the other is running 3. SSO is supported in Cisco IOS Release 12. Configures SSO. 151. Sets the redundancy configuration mode to SSO on both the active and standby RP. 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. The primary will reboot to enable sso and pull the config from the current active (secondary in this case) unit xml on boot. Enters redundancy configuration mode. Example: Device(config-red)# mode sso: Configures stateful switchover. If the HA unit is not an HA sku, then you need a minimum of 50 ap license. Step 4: mode sso. 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. With NSF/SSO, peer networking devices do not experience routing flaps. redundancy 4. 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. Router(config-red)# end. When the controller works as a host for spanning tree, ensure that you configure portfast trunk in the uplink switch using. 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, SSO2 つの Cisco Wireless Services Module 2（WiSM2）プラットフォーム間の HA を実現するには、コントローラを単一のシャーシに配置するか、仮想スイッチング システム（VSS）を使用してリダンダンシー VLAN を複数のシャーシ間に拡張することで、複数のシャーシに配置する必要があります。3. 48. 39. Sets the redundancy configuration mode to SSO on both the active and standby RP. If any of those mismatched commands are executed on the active switch, the standby. 102. (Operational) = sso Redundancy Mode. Connect with console to it and check which state it is in. Cisco HA architecture is based on redundant Route Processors and the NSF and SSO features, such that ports stay active and calls do not drop, eliminating network disruption during upgrades. The redundancy port and the redundancy VLAN in Cisco WiSM2 are assigned an automatically generated IP address in which the last two octets are obtained from the last two octets of the RMI. Step 4: show running-config Example: Router# show redundancy Operating mode is sso redundancy mode sso hw-module slot 6 image disk0:rsp-pv-mz hw-module slot 7 image disk0:rsp-pv-mz Active in slot 6 Standby in slot 7 The system total uptime since last reboot is 2 weeks, 23 hours 41 minutes. 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. The mode sso command can be entered only from within redundancy configuration mode. 170 West Tasman Drive. It is setup in the below settings but I am not running a pair of these switches. If peer unit's management and/or redundancy management entries are present as mobility members please remove them before enabling redundancy. 56. Step 4: mode sso. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 4. 150. Maintenance Mode = Disabled. With RPR+, the redundant supervisor engine is fully initialized and configured, which shortens the. Enter application redundancy mode. 39. Cisco 3504 WLCs. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. What is redundancy mode Cisco? 4. Configuration, forwarding, and state information are synchronized from the StackWise Virtual active switch to the redundant switch at startup, and whenever changes to the StackWise Virtual. 255. Cisco NSF works with the SSO feature. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. Specify a standby slot, by entering the power redundancy-mode redundant n+1 standby-PSslot command. To reload the standby switch if a parser return code (PRC) failure occurs during configuration synchronization, use the policy config-sync reload command in redundancy configuration. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. You can also manually initiate a switchover by entering the redundancy force switch-over command on the Cisco StackWise Virtual active supervisor in privileged EXEC mode. 2(20)EWA and later releases. End with CNTL/Z. Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. Step 5. 2(20)EWA and later releases. 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. SRM is inherent with SSO, which brings up the standby route processor. 4. Note After configuring SSO mode, the standby RP will automatically reset. “Configuring NSF with SSO Supervisor Engine Redundancy”). Introduction; Whats New in Cisco IOS XE Dublin 17. Step 5: exit. 39. SSO is supported in Cisco IOS Release 12. 2(20)EWA and later releases. Step 3 Router# show running-config Verifies that SSO is enabled. Redundancy may not work due to differences between the Cisco IOS. The mode sso command can be entered only from within redundancy configuration mode. End with CNTL/Z. One switch is running 3. Enters redundancy configuration mode. † Software upgrade. Enters redundancy configuration mode. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Router# show redundancy Redundant System Information :-----Available system uptime = 38 minutes Switchovers system experienced = 0 Standby failures = 1 Last switchover reason = none Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications =. Enters redundancy configuration mode. We were testing a WLC HA Pair failure scenario wherein we removed the RP port connection from Active WLC. SSO HSRP. Since we couldnt afford downtime I rebooted standby controller that was in maintenance mode and it was able to boot in sso redundant mode. Example: Device(config-red)# mode sso: Configures stateful switchover. This command has no. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up. SSO-The show module command displays Hot. redundancy mode sso. Step 5. 08. What is RPR redundancy?. Step 4. Inbox redundancy with Stateful Switchover (SSO) mechanism provides redundancy within the same device. To reload the standby switch if a parser return code (PRC) failure occurs during configuration synchronization, use the policy config-sync reload command in redundancy configuration. What is redundancy mode SSO? 2. 48. By default, the system synchronizes all system files, which is the typical setting for most applications. Cisco Public HA SSO behavior Redundancy Port (RP) BRKEWN-2846 19 Redundancy Port (RP) • Syncs configuration and AP/Client databases between Active and Standby • Monitors status of the chassis • Possible single point of. Step 5: end. In specific Cisco networking devices that support dual RPs, SSO takes advantage of RP redundancy to increase network availability. Router(config-red)# end. 2. SSO is supported in Cisco IOS Release 12. 2016-10-12 10:10 AM 2017-09-01 03:01 AM 更新. Step 4. 130，稱為WLC1; 第二個地址IP地址10. Combined. The software will prompt to reboot the Standby Supervisor (in slot 5) - confirm to reboot - exit configuration mode and save the configuration. Router(config)# mode sso. Step 2. 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. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. NSF is supported by the BGP, OSPF, and EIGRP routing protocols and is supported by Cisco Express Forwarding (CEF) for forwarding. Step 8: exit. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. 3 allows the AP to establish CAPWAP tunnel with Active WLC and share mirror copy of AP database with Standby WLC. Initiate a switchover using the command redundancy force-switchover. Information About Redundancy. 2(20)EWA and later releases. I Think that the righ status of SSO Configuration must be like: Hardware Mode = Duplex. Step 5. Redundancy may not work due to differences between the Cisco IOS. Description. Step 5. If you perform an online insertion and removal (OIR) of the module, the switch resets during the stateful switchover and the. 2(20)EWA and later releases. Step 1. Configures SSO. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Consolidated Platform Configuration Guide, Cisco IOS XE 3. 39. 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. Note Enabling SSO initiates a controller reboot. I am seeing the SSO is established. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Last switchover reason = none. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. SSO is supported in Cisco IOS-XE Release 3. redundancy 4. 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. Redundancy State = sso . Redundancy configuration (config-red)This command supports Route Processor Redundancy (RPR) with the Cisco uBR10012 router. 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. The mode sso command can be entered only from within redundancy configuration mode. The mode sso command can be entered only from within redundancy configuration mode. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Standby failures = 0. Example: Device(config-red)# exit: Exits redundancy. Maintenance Mode = Disabled. Enters redundancy configuration mode. The SSO HSRP feature enables the Cisco IOS HSRP subsystem software to detect that a standby RP is installed and the system is configured in SSO redundancy mode. n+1 redundant Mode—n number of power supply modules are active (n can be one to seven power supply modules). In this CCNP ENCOR lesson, we will focus on this redundancy mechanism. Step 2. 2. auto-sync bootvar. Example: Device#. If I enter SSO mode on the second node I got an error: >config redundancy mode sso WARNING: 1. Note Recommended procedure for ROMMON upgrade of Supervisor in VSS Quad-Sup SSO (V4SO): Use the command upgrade rom-monitor to upgrade the ROMMON image, preference region/invalidate region on current active Supervisor. Router(config-red)# end. There is no way i can change it to redundancy mode SSO. 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. 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. Router (config-red)# 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. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. The mode sso command can be entered only from within redundancy configuration mode. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. Check if There is Sufficient Available Memory on Flash 4. It is not necessary to configure the IP address for the redundancy VLAN because the IP address is automatically generated. Step 5. 10. . Step 5. 59. Step 5. 61 /24. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. (Operational) = sso Redundancy Mode. Cisco StackWise Virtual Redundancy. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. Ensures that the PFC operating mode matches on both chassis, to ensure that the VSS comes up in SSO redundancy mode. The default mode for the Cisco 7500 series routers is HSA. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE), Experimental Version 16. Configured Redundancy Mode = RPR. %HA-5-MODE:Operating mode is sso, configured mode is sso. Are these switches setup in this manner by default? Can the redundancy be disabled if I am not going to use redundancy? What are the commands to disable redundancy? switch 1 provision ws-c3850-48p. restart the Wireless controller in maintenance mode. Displays the operating redundancy mode. 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. Cisco 3504 Controllers. 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. End with CNTL/Z. Switch# show. 2. SSO is supported in Cisco IOS Release 12. Standby failures = 3. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. My routers only show redundancy mode as none. Complete these steps in order to check the redundancy status: a. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. Enters redundancy configuration mode. And it has to be Layer 2 between the 2 RPs, so either directy connected or through a VLAN. mode sso. SSO also synchronizes critical state information. Step 4. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any given time, while. Example: Device(config-red)# mode sso: Configures stateful switchover. Router# copy running. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. Step 2: mode sso. Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up client count = 115Enters global configuration mode. Router# configure terminal Router(config)# redundancy Router(config)# mode SSO Router(config)# exit Router# reload Stateful Switchover. ”. A redundancy VLAN is connected to the redundant port on Cisco WiSM2 through the backplane. Step 6. With NSF/SSO, peer networking devices do not experience routing flaps. If the. Connect redundancy ports together on primary/secondary. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. This chapter describes how to configure supervisor engine redundancy using Cisco nonstop forwarding (NSF) with stateful switchover (SSO). Configures SSO. x. #sh redundancy Redundant System Information :-----Available system uptime = 6 days, 17 hours, 12 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Simplex Configured Redundancy Mode = sso Operating Redundancy Mode = Non-redundant Maintenance Mode =. In an HA environment using FlexConnect locally switched clients, the client information might not show the username. 1 onwards, the method to configure the gateway IP. Redundancy may not work due to differences between the Cisco. These sections describe supervisor engine redundancy using NSF with SSO: About Cisco IOS NSF-Aware and NSF-Capable Support; NSF with SSO Supervisor Engine Redundancy Overview. The new High Availability (HA) feature (that is, AP SSO) set within the Cisco Unified Wireless Network software release version 7. Example: Router(config)# end. Router#show redundancy Redundant System Information : ----- Available system uptime = 6 days, 4 hours, 17 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. 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. client_notification_TMR = 30000 milliseconds . RPR+-The show module command displays Warm. SSO Operation. 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. Operating Redundancy Mode = sso. Enters global configuration mode. Example: Device(config-red)# mode sso: Configures stateful switchover. 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 reset. Usage Guidelines. 254. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = Switch 2 Current Software state =. † Software. 2(20)EWA and later releases. show redundancy states. 2(20)EWA 以降のリリースでサポートされます。. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. 2016-10-12 10:10 AM 2017-09-01 03:01 AM 更新. 除了這些IP地址外. 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. show redundancy Redundant System Information :-----Available system uptime = 11 hours, 31 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none. Communications = Up. Note Enabling SSO initiates a controller reboot. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = slot 1 Current Software state = ACTIVE Uptime in current state = 23 hours, 52 minutes Image Version = Cisco IOS Software [Fuji], Catalyst L3 Switch Software. 2. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine. Check if There is Sufficient Available Memory on Flash 4. When we simulate a problem by powering off the Active Controller, the standby controller will reboot, all of our APs loose. To enable Cisco StackWise Virtual on a switch, use the stackwise-virtual command in the global configuration mode. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up. Router(config)# mode sso. end. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 56. 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 =. 2. Enters redundancy configuration mode. Enters redundancy configuration mode. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. config redundancy mode sso. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. . When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Enters redundancy configuration mode. Configures SSO. 05 Model Number : C9606R Model Number : C9606R: CAT9600#sh redundancy Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Active Location = Switch 2 Current Software state = ACTIVE Standby Location = Switch 1 Current Software state = STANDBY HOT: CAT9600#show license summary With Stateful Switchover (SSO), Cisco IOS routers with dual RPs can synchronize router configuration and control plane state information. Router# show redundancy Operating mode is sso redundancy mode sso hw-module slot 6 image disk0:rsp-pv-mz hw-module slot 7 image disk0:rsp-pv-mz Active in slot 6 Standby in slot 7 The system total uptime since last reboot is 2 weeks, 23 hours 41 minutes. Reason: Software version. configure redundancy mode sso. Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 3 850 L3 Switch Software (CAT3850-UNIVERSALK9-M), Version 03. 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。. (Optional) Backup the Startup Config and Running Config files of the controllers. = SSO Redundancy Mode (Configured) = SSO Redundancy State = Non Redundant Manual Swact = disabled (system is simplex (no peer unit)) Communications = Down Reason:. Here is the output from the standby while booting up:. Enters configuration mode. The DHCP high availability features are enabled by default when the redundancy mode of operation is set to SSO. mode sso. 1. Only the top two ports are. configure redundancy mode sso. 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. Enters 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. • 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. Stateful Switchover is particularly useful in conjunction with Nonstop. Catalyst 4500/4500-X series switches' VSS does not support route processor redundancy (RPR) mode. 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. SSO HSRP. 5 and the other is running 3. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. The routing protocols have been enhanced with NSF-capability and. 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. mode sso. Sets the router in SSO redundancy mode. This feature is supported on all controller models supporting HA SSO feature: Cisco 8500 Series Controllers . Step 4: show running-config Example:Router# show redundancy Operating mode is sso redundancy mode sso hw-module slot 6 image disk0:rsp-pv-mz hw-module slot 7 image disk0:rsp-pv-mz Active in slot 6 Standby in slot 7 The system total uptime since last reboot is 2 weeks, 23 hours 41 minutes. SSO works with Cisco NSF, which helps reduce the switchover downtime on Layer 3. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE),Experimental Version 16. end. Router(config)# mode sso. Router# copy running. What can be the reason. 2. The mode sso command can be entered only from within redundancy configuration mode. This command supports Route Processor Redundancy Plus (RPR+) with the Cisco uBR10012 router. end. Step 3. Step 4. The processing of mirroring this information between route processors is known as checkpointing. This feature is supported on all controller models supporting HA SSO feature: Cisco 8500 Series Controllers . insrc-redundant. 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. Hardware Mode = Duplex. The New High Availability feature i. Router(config)# mode sso. 2 (11)BC3. Route Processor Redundancy (RPR) refers to the provision of support for the redundancy feature. High Availability SSO Deployment Guide for Cisco Catalyst 9800 Series Wireless Controllers, Cisco IOS XE Amsterdam 17. Step 5. Step 5. Cisco Stateful Switchover (SSO) is one of the redundancy mechanisms used in networking. Redundancy-MGNT: 192. These sections describe supervisor engine redundancy using NSF with SSO: About Cisco IOS NSF-Aware and NSF-Capable Support; NSF with SSO Supervisor Engine Redundancy Overview. after reboot ASR can used single processer but, when I show redundancy configure still mode sso I used in config t and redundancy and default-exit and enter and save non reboot after then show config again config in redundacy mode none Bias-Free Language. Example: Device (config-red)# mode sso: Configures SSO. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso. This made the standby WLC to go into maintenance mode. Step 3. 168. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 10. 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. 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. Step 3:. Check the Current ISSU and Install States 7. 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. Once config is bulk-synced the primary unit is now in HOT STANDBY. Check if Auto-Boot is Enabled 6. All unsaved configuration will be saved. Redundancy Mode = SSO ENABLED. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. On primary controller, disable SSO using the command: Config redundancy mode disable The Active and Standby WLCs. 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. While implementing Nonstop Forwarding (NSF) technology in systems using SSO. This chapter consists of these sections:.