Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. (CSCec05612)Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide, Release 12. 0SG and later releases. The switch is. SSO is supported in Cisco IOS Release 12. 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. 39. 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. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. The system has experienced 4 switchovers. Example: Router(config)# exit Example: Router # Enters redundancy configuration mode. Router(config-red)# end. The DHCP high availability features are enabled by default when the redundancy mode of operation is set to SSO. Example: Router(config-red-app-grp)#name cube-ha. 0 を. 0. End with CNTL/Z. Note After configuring SSO mode, the standby RP will automatically reset. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Step 5. You usually will find the two redundancy terms together, as "SRM with SSO. Sets the redundancy configuration mode to SSO on both the active and standby RP. Switch# show running-config. Cisco 5500 Series WLCs . end. SSO HSRP. Step 1. 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. Note After configuring SSO mode, the standby RP will automatically reset. There are three modes in redundancy for the standby supervisor when native Cisco IOS Software is used: RPR-The show module command displays Cold. Step 6. Device(config-red)# mode sso: Configures stateful switchover. 102. Operating Redundancy Mode = sso. 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. 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: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. 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. With RPR, the backup supervisor engine is partially initialized and. 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. RPR+-The show module command displays Warm. n+1 redundant Mode—n number of power supply modules are active (n can be one to seven pput ower supply modules). 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. What is redundancy mode Cisco? 4. Refer to the Catalyst 4500 Series Switch Cisco IOS Command Reference and related publications. † Software. Device# show redundancy Redundant System Information : ----- Available system uptime = 6 days, 5 hours, 28 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 = Disabled Communications =. 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. On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. mode sso. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 0. Now if the HA unit is indeed an HA sku, then you don't need to have any license and all you have to do is enable secondary unit: config redundancy unit secondary. For more information, see Chapter 1, “Route Processor Redundancy (RPR). When an RP is active and the other RP is standby, SSO enables the standby RP to take over if the active RP fails. Uptime in current state = 4 days, 21 hours, 27 minutesYes you need the RP in order to build SSO. Hope that helps! -Bradley Selzer. Router# copy running. Maintenance Mode = Disabled. SSO pair connected to upstream VSS pair with split links and RP connected back to back. main. 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. 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 = 30 minutes Image Version = Cisco IOS Software [Fuji], Catalyst L3 Switch Software. 5. Usage Guidelines. SSO pair connected to upstream VSS pair with split links and RP connected back to back. 2 255. Step 6: mode sso. End with CNTL/Z. Enters redundancy configuration mode. Step 2. Example: Device(config-red)# mode sso: Configures stateful switchover. I am seeing the SSO is established. 39. Example: Device(config-red)# mode sso: Configures stateful switchover. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. If the command is not found in the Catalyst 4500 Command Reference, it is located in the larger Cisco IOS library. 08. . Router # Answer: In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. Information About Redundancy. Use the power redundancy-mode {combined. SSO-The show module command displays Hot. Before you begin the ISSU process, verify the redundancy mode for the system. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Note After configuring SSO mode, the standby RP will automatically reset. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 12 255. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. main-cpu. Router(config-red)# end. The Broadband High Availability Stateful Switchover feature allows you to configure subscriber redundancy policies that tune the synchronization process. Step 5: end. (NSF) with a stateful switchover (SSO) when a supervisor-level failure occurs. 168. On the standby. Router# configure terminal. 2. If peer unit's management and/or redundancy management entries are present as mobility members please remove them before enabling redundancy. 2(20)EWA and later releases. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. their Capwap tunnel, APs and clients get disconnected. This feature is not supported on the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models of the Cisco Catalyst 9500 Series Switches. 2(20)EWA and later releases. The mode sso command can be entered only from within redundancy configuration mode. 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 6 . When this command is entered, the standby switch is reloaded and begins to work in SSO mode. The following are the ways in which Cisco StackWise Virtual's. Supervisor engine redundancy allows OIR of the redundant supervisor engine for maintenance. Device# show redundancy Redundant System Information : ----- Available system uptime = 6 days, 5 hours, 28 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 running-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. 6. Usage Guidelines. configure redundancy unit secondary. A redundancy VLAN is connected to the redundant port on Cisco WiSM2 through the backplane. 254. Enters redundancy configuration mode. The mode sso command can be entered only from within redundancy configuration mode. Example: Device(config-red)# mode sso: Configures stateful switchover. According to cisco: SSO is the IOS High Availability feature that allows one RSP on a 7500 to immediately take over for the other RSP in the event of an RSP failure. Check if There is Sufficient Available Memory on Flash 4. 255. The feature is enabled by default when the redundancy mode of operation is set to SSO. By default, the system synchronizes all system files, which is the typical setting for most applications. Enters redundancy configuration mode. Note After configuring SSO mode, the standby RP will automatically reset. 6. Note SSO is not supported if the IOS-XE software is running in the LAN Base mode. Catalyst 4500 series switches allow a redundant 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. Learn more about how Cisco is using Inclusive Language. x. end. The standby will sync its configuration from. When you configure the controller for HA SSO, the Cisco 600 Series OfficeExtend Access Points are not supported. SSO は、Cisco IOS Release 12. sso not available as redundancy mode option Go to solution Scott Chauncey Beginner Options 11-01-2012 01:23 PM - edited 03-07-2019 09:48 AM Any idea why rpr. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. = SSO Redundancy Mode (Configured) = SSO Redundancy State = Non Redundant Manual Swact = disabled (system is simplex (no peer unit)) Communications = Down Reason:. Step 4. 151. NSF and SSO must be configured before attempting an ISSU. 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. Switchover Time. restart the Wireless controller in maintenance mode. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. This feature is not supported on the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models of the Cisco Catalyst 9500 Series Switches. Step 4: mode sso. Step 5: end. Cisco 3504 WLCs. Stateful Switchover is particularly useful in conjunction with Nonstop Forwarding. Router# configure terminal Router(config)# redundancy Router(config)# mode SSO Router(config)# exit Router# reload Stateful 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. Hardware Mode = Simplex. SSO refers to the implementation of Cisco IOS software that allows applications and features to maintain a defined state between an active and standby RP. To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. Example: Device(config-red)# mode sso: Configures stateful switchover. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Step 3. . 2(20)EWA and later releases. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. Syntax Description. Check the Current ISSU and Install States 7. Local State = ACTIVE. The mode sso command can be entered only from within redundancy configuration mode. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Both RPs must run the same Cisco IOS image. 3. Step 4. Active WLC 上で SSO の mode を disable にする. 1. 130 pour le. Reason: Software version. Configures SSO. Router (config)# redundancy. Step 5. What is redundancy mode? 3. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. (Operational) = sso Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up client count = 115 client_notification_TMR = 30000 milliseconds RF debug mask = 0x0 Device# show. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. 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 noneUse the power redundancy-mode {combined. The. The default standby power supply slot is PS8. Step 3:. 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 provides RP redundancy by establishing one of the RPs as the active processor and the other RP as. 2016-10-12 10:10 AM 2017-09-01 03:01 AM 更新. We will definitely upgrade are fus code. Check the Boot Mode 3. config redundancy mode sso. Step 5. Step 2: mode sso. One switch is running 3. 39. SSO is supported in Cisco IOS Release 12. x. The mode sso command can be entered only from within redundancy configuration mode. The device supports fault resistance by allowing a standby switch to take over if the active device becomes unavailable. High Availability SSO Deployment Guide for Cisco Catalyst 9800 Series Wireless Controllers, Cisco IOS XE Amsterdam 17. SSO is supported in Cisco IOS Release 12. config 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. Step 5: end. Step 4 Router# show redundancy states Displays the operating redundancy mode. x. Step 5: end. 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. The SSO/ISSU feature supports only the Cisco ASR 1000 Series Aggregation Services Routers intrachassis (RP-to-RP) SSO, but not the interchassis (Cisco ASR1K-to-Cisco ASR1K) SSO. Router(config-red)# mode sso. Dans cet exemple, la commutation avec état (SSO) haute disponibilité (HA) est configurée entre deux instances 9800-CL, qui exécutent la même version du logiciel Cisco IOS, qui ont été configurées avec des WMI séparés et avec une interface utilisateur graphique accessible à l'adresse. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Cisco IOS Software, Catalyst 4500 L3 Switch Software. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = Switch 2 Current Software state =. configure redundancy mode sso. 48. config redundancy mode sso. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Router(config)# mode sso. Switchovers system experienced = 5. Step 3:. Communications = Up. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Enters global configuration mode. Redundancy Mode (Configured) = sso . Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Switch-1(config)# platform hardware vsl pfc mode non-xl (Optional) Sets the PFC operating mode to PFC4 on Chassis A. WLC のステータスや設定を確認する. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Router# show running-config. Example: Device#. Usage Guidelines. 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. Enter configuration commands, one per line. The switch is supports route processor redundancy (RPR). My Secondary Switch is in disable state despite its in SSO mode. Note Enabling SSO initiates a controller reboot. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Consolidated Platform Configuration Guide, Cisco IOS XE 3. I tried to switch on SSO mode on both wlc 5520. Example: Device(config-red)# exit: Exits redundancy. x. Verify the redundancy status using command : show redundancy summary 5. config redundancy mode sso on primary. Displays the operating. Step 5. Redundancy may not work due to differences between the Cisco IOS releases. Configurations. Step 4. The problem is a version mismatch. Step 2. Initiate a switchover using the command redundancy force-switchover. The VSS runs stateful switchover (SSO) between the VSS active and standby supervisor engines (see Figure 5. I have 2x 5508 in SSO mode. Step 4. mode sso. 9800 WLC-1# show redundancy Redundant System Information : ----- Available system uptime = 1 hour, 35 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 = Disabled Communications = Up Current. Redundancy may not work due to differences between the Cisco IOS. Once you get them on the same version, you will be able to get to SSO. 133 voor de tweede, WLC2 genoemd. 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. 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. mode sso. Step 5:. 3 allows the AP to establish CAPWAP tunnel with Active WLC and share mirror copy of AP database with Standby WLC. There is no way i can change it to redundancy mode SSO. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE),Experimental Version 16. 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. Switchovers system experienced = 0. Step 3 Router# show running-config Verifies that SSO is enabled. Enters redundancy configuration mode. This command has no. 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. The mode sso command can be entered only from within redundancy configuration mode. SSO is supported in Cisco IOS Release 12. VRRP and SSO can coexist but both features work independently. Current Processor Information :----- Active Location = slot 1 Current Software state = ACTIVE. 90. Step 6. 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. 56. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. 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. Inbox redundancy with Stateful Switchover (SSO) mechanism provides redundancy within the same device. 2(20)EWA and later releases. This mode does not provide power redundancy. Step 6. Enters redundancy configuration mode. ※ このドキュメントでは AireOS 8. 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 stateful switchover and the. mode sso. auto-sync standard. Step 2: mode sso. (Optional) Ensure network connectivity. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Example: Device(config-red)# exit: Exits redundancy. Router# configure terminal. For more. 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。. Example: Device(config-red)# mode sso: Configures stateful switchover. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. Step 4: mode sso. show redundancy Redundant System Information :-----Available system uptime = 11 hours, 31 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none. 0. 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. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Catalyst 4500/4500-X series switches' VSS does not support route processor redundancy (RPR) mode. Both controllers reboot and pair up in the SSO mode. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Route Processor Redundancy (RPR) refers to the provision of support for the redundancy feature. The following are the ways in which Cisco StackWise Virtual's redundancy model differs from that of the standalone mode: The Cisco StackWise Virtual active and standby switches are hosted in separate switches and use a StackWise Virtual link to exchange information. 5 and the other is running 3. Router(config)# mode sso. 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 first two octets are always 169. Redundancy configuration (config-red)This command supports Route Processor Redundancy (RPR) with the Cisco uBR10012 router. Communications = Up . 0 !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. Redundant System Information : Available system uptime = 53 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = noneCisco Catalyst 9800 Series Wireless Controller Software Configuration Guide, Cisco IOS XE Cupertino 17. The available power is the total power capacity of all power supplies. Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications = Down Reason: Simplex mode Current Processor Information :-----Active Location = slot 1 Current Software state = ACTIVE Uptime in current state = 6 days, 9 hours, 23 minutes Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 3 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 = Disabled Communications = Down. Cisco 3504 Controllers. Ensures that the PFC operating mode matches on both chassis, to ensure that the VSS comes up in SSO redundancy mode. The Cisco Nexus 9504, 9508,. 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. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. exit 6. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. 5) Bring up only one Gig interface and try to access it. 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. Connect redundancy ports together on primary/secondary. The mode sso command can be entered only from within redundancy configuration mode. If a VSS does not meet the requirements for SSO redundancy, it will be incapable of establishing a relationship with the peer switch. In Cisco Wireless LAN Controllers, high availability is achieved with redundancy. #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. = sso Redundancy Mode (Configured) = sso Split Mode = Disabled Manual Swact = Enabled Communications = Up client count = 29 client_notification_TMR = 30000 milliseconds keep_alive TMR. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. redundancy Router(config)# redundancy. Step 4: mode sso. Router(config)# redundancy. 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 =. For WLC 1, go to Monitor > Redundancy > Summary: b. redundancy 4. 除了这些IP地址外，还. 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 standby switch is reloaded and begins to work in SSO mode. Enters redundancy configuration mode. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. End with CNTL/Z. In our example we are using the following IP addresses: WLC Active. Step 3. SSO is supported in Cisco IOS Release 12. This mode utilizes two electrical grids, each one powering a half module within each power supply. Step 5. Enters redundancy configuration mode. You can configure the Stateful Interchassis Redundancy feature to determine the active device from a group of devices, based on a number of failover conditions. Step 5. They will reboot again. 3. The SSO feature takes advantage of RP redundancy by establishing one of the RPs as the active RP while the other RP is designated as the standby RP, and then synchronizing critical state.