With RPR+, the redundant supervisor engine is fully initialized and configured, which shortens the. Note After configuring SSO mode, the standby RP will automatically reset. (Operational) = sso Redundancy Mode. This feature also functions in an nonstop forwarding (NSF) and stateful switchover (SSO) environment. NSF and SSO must be configured before attempting an ISSU. 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. Step 3 Router# show running-config Verifies that SSO is enabled. 2(20)EWA and later releases. Step 4. 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. Step 4: mode sso. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = slot 5 Current Software state = ACTIVE Uptime in current state = 6 days, 5 hours, 28 minutes Image Version = Cisco IOS Software, Catalyst L3 Switch Software Cisco NSF は、SSO 対応のデバイスにおけるルーティング フラップを抑止することによって、ネットワークの安定性を保ちます。 Cisco NSF と SSO により、スイッチオーバー後にルーティング プロトコル情報が復元される間も、既知のルートでデータ パケットの. Maintenance Mode = Disabled. Convert RPR to SSO mode, this will force a reboot on standby supervisor. The default mode for the Cisco 7304 router and Cisco 10000 series routers is SSO. cisco Systems, Inc. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Enters redundancy configuration mode. Save the configuration on the controller. 56. This feature is not supported on the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models of the Cisco Catalyst 9500 Series Switches. 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. 11 peer-redundancy-management 10. Example: Device(config-red)# mode sso: Configures stateful switchover. Communications = Up . Verifies that SSO is enabled. Enters redundancy configuration mode. (Operational) = sso Redundancy Mode. 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. Redundancy configuration (config-red)This command supports Route Processor Redundancy (RPR) with the Cisco uBR10012 router. Enters configuration mode. The stack operates in the 1:1 stack mode with the specified active or standby after reboot. x [S2C-build-v16x_throttle-4064-/. Enters redundancy configuration mode. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. = sso Redundancy Mode (Configured) = sso Split Mode = Disabled Manual Swact = Enabled Communications = Up client count = 29 client_notification_TMR = 30000 milliseconds keep_alive TMR. Catalyst 4500 series switches allow a redundant supervisor engine to take over if the active supervisor engine fails. When you configure the controller for HA SSO, the Cisco 600 Series OfficeExtend Access Points are not supported. you then add the SSO redundancy commands on the active supervisor and you can insert the prepared new supervisor. 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. ”. 48. 4. Step 6. The processing of mirroring this information between route processors is known as checkpointing. configure interface address management 10. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. (Optional) Ensure network. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :----- Active Location = slot 2. You can configure an n+1 redundant mode. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Switchover Time. Maintenance Mode = Disabled . On primary controller, disable SSO using the command: Config redundancy mode disable The Active and Standby WLCs. With NSF/SSO, peer networking devices do not experience routing flaps. By default, the system synchronizes all system files, which is the typical setting for most applications. 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. Check the Current ISSU and Install States 7. Enters redundancy configuration mode. We have two Cisco WLC 8540 in HA pair. 150. Is there anything I can do to force it out of maintenance mode? show redundancy summary Redundancy Mode = SSO ENABLED Local State = MAINTENANCE Peer State = UNKNOWN - Communication Down Unit = Secondary Redundancy State = Non Redundant Maintenance Mode = Enabled Maintenance cause= Secondary unit has. 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 =. Cisco Employee. end. Step 6: mode sso. 1. 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. Step 4. With NSF/SSO, peer networking devices do not experience routing flaps. Note Enabling SSO initiates a controller reboot. Configures SSO. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Step 4: mode sso. In an HA environment using FlexConnect locally switched clients, the client information might not show the username. 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. The processing of mirroring this information between route processors is known as checkpointing. 9. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Solved: Hi, I need help to get a HA SSO setup running. auto-sync standard. After rebooting the primary controller changed into Maintanence Mode. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. 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 = Disabled Communications = Up Current. On the standby controller, re-enter the correct IP addresses corresponding to the management and dynamic interfaces. auto-sync config-register. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to 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. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. 1. 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. Cisco Stateful Switchover (SSO) is one of the redundancy mechanisms used in networking. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. (CSCec05612)Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide, Release 12. Exits configuration mode and returns to the. Enters redundancy configuration mode. Returns to EXEC mode. VRRP and SSO can coexist but both features work independently. 2(20)EWA and later releases. Enters redundancy configuration mode. Sets the redundancy configuration mode to SSO on both the active and standby RP. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Step 5:. exit Router(config)# exit. Communications = Up. 3. 4. auto-sync startup-config. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. Usage Guidelines. 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 is supported in Cisco IOS Release 12. 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 =. Configuring Route Processor Redundancy SSO Mode configure terminal redundancy mode sso main-cpu standby. Router(config-red)# end. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Router# configure terminal. Redundant System Information :----- Available system uptime = 44 weeks, 2 days, 6 hours, 12 minutes. Router(config)# mode sso. 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 5. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. 配置. 0 を. If the command is not found in. Example: Device(config-red)# exit: Exits redundancy. Router (config-red)# mode sso. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. 59. Step 5. 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. ATM SSO is not configurable and runs by default on networking devices configured with ATM and Redundancy 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. What is redundancy mode Cisco? 4. Recovery Mode Yes Yes Default GW Check Yes Yes LACP, PAGP with SSO No Yes SMU for controller patching No Yes. 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. Here is the output from the standby while booting up:. Step 9: router bgp autonomous-system-number. You usually will find the two redundancy terms together, as "SRM with SSO. The mode sso command can be entered only from within redundancy configuration mode. Configured Redundancy Mode = RPR. hw-switch switch 1 logging onboard message level 3. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Example: Device(config-red)# mode sso: Configures stateful switchover. = Non-redundant Redundancy Mode (Configured) = sso Redundancy State = Non Redundant. 2. SSO is supported in Cisco IOS Release 12. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any given time, while. Step 5. 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. Configuration Examples for DHCP High Availability. see. 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. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. Step 5: exit. Enters redundancy configuration mode. (Optional) Backup the Startup Config and Running Config files of the controllers. 5. SSO is supported in Cisco IOS Release 12. Hi! A custommer of mine tried to configure HA AP-SSO with two 5508 controllers. x. Step 4: mode sso. 5 and the other is running 3. 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. Step 4. Displays the operating. . Example: Device(config-red)# mode sso: Configures stateful switchover. 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. One switch is running 3. The time required by the device to switch over from the active RP to the standby RP varies by platform: Although the newly active processor takes over almost immediately following a switchover, the time required for the device to begin operating again in full redundancy (SSO) mode can be several minutes, depending on the platform. The documentation set for this product strives to use bias-free language. 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 5. Step 5:. end. Step 5. It is setup in the below settings but I am not running a pair of these switches. Cisco 5520 wireless LAN controller has a failover RP Port. 63 /22. 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. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. 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. Reason: Software version. Standby failures = 0. 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. client count = 149 client_notification_TMR = 30000 milliseconds. 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. Enter configuration commands, one per line. The mode sso command can be entered only from within redundancy configuration mode. RPR+-The show module command displays Warm. The standby will sync its configuration from. Remove SSO HA Configuration: 5. Supervisor Module Redundancy. It is setup in the below settings but I am not running a pair of these switches. 2(20)EWA and later releases. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE), Experimental Version 16. This example shows how to set the redundancy mode to SSO: Device (config)# redundancy Device (config-red)# mode sso Device (config. Enters redundancy configuration mode. x. Note • The two Gigabit Ethernet interfaces on the redundant supervisor engine are always active unless you enter the fabric switching-mode allow dcef-only command. In case of n+1 redundancy, access points are configured with primary, secondary, and tertiary controllers. The Virtual Redundancy Routing Protocols (VRRP) is not SSO-aware, meaning state information is not maintained between the active and standby switches during normal operation. Enters redundancy configuration 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. Step 4 Router# show redundancy states Displays the operating 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 =. Redundancy may not work due to differences between the Cisco. The routing protocols have been enhanced with NSF-capability and. 0 10. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Switch(config-red)# end. WLC のステータスや設定を確認する. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. #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 =. 2(20)EWA and later releases. Current Processor Information :----- Active Location = slot 1 Current Software state = ACTIVE. 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 = Up Current. In the RPR mode, one of the supervisor engines is active and operational, while the second supervisor engine is in the standby 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. end. 5. Enters redundancy configuration mode. All unsaved configuration will be saved. In this CCNP ENCOR lesson, we will focus on this redundancy mechanism. I will show you how to make a wireless-controller-cluster. Step 5: exit. Note Enabling SSO initiates a controller reboot. In this article, we take a look at how to configure High Availability Stateful Switchover (HA SSO) on the Cisco 9800 WLCs running IOS-XE using Redundancy Management Interfaces (RMI) in addition to the Redundancy Ports (RP). Router(config-red)# end. 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. = Non-redundant Redundancy Mode (Configured) = sso Redundancy State = Non. Usage Guidelines. 0. 12. Displays the operating redundancy mode. The mode sso command can be entered only from within redundancy configuration mode. SSO-The show module command displays Hot. Step 4: mode sso. If peer unit's management and/or redundancy management entries are present as mobility members please remove them before enabling redundancy. Step 5. Hope that helps! -Bradley Selzer. Note After configuring SSO mode, the standby RP will automatically reset. 255 ! interface GigabitEthernet1/0/4 ip vrf forwarding vpn1 ip address 10. 0. Note Enabling SSO initiates a controller reboot. client_notification_TMR = 30000 milliseconds . 255. Usage Guidelines. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 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. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = Switch 2 Current Software state =. Redundant System Information :-----Available system uptime = 1 year, 49 weeks, 6 days, 20 hours, 30 minutes Switchovers system experienced = 2 Standby failures = 6 Last switchover reason = active unit removed. The sku on the box for the HA should have this part number: air-ct5508-ha-k9. Enters redundancy configuration mode. Example: Router(config-red)# mode sso. 2(20)EWA and later releases. . 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. Example: Router(config)# router bgp 1000Example: Enabling 1:1 Redundancy Stack Mode; Example: Disabling 1:1 Redundancy; Example: Enabling 1:1 Redundancy Stack Mode. NSF Operation. 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(config)# mode sso. 0 を. 3. . Example: Device (config-red)# endWith SSO redundancy, the StackWise Virtual standby switch is always ready to assume control if a fault occurs on the StackWise Virtual active switch. 1 Disabling SSO on HA Pair 1 On primary controller, disable SSO using the command: config. ※ このドキュメントでは AireOS 8. Step 4. 0. To. (Optional) Backup the Startup Config and Running Config files of the controllers. Step 2. Example: Device(config-red)# mode sso: Configures stateful switchover. If the command is not found in the Catalyst 4500 Command Reference, it is located in the larger Cisco IOS library. This feature is supported on all controller models supporting HA SSO feature: Cisco 8500 Series Controllers . 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. SSO is supported in Cisco IOS Release 12. 151. SSO Operation. 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. The configuration on the active controller is synched to the standby controller via the redundant port. (Cisco Controller) >show redundancy summary. In case of n+1 redundancy, access points are configured with primary, secondary, and tertiary controllers. 4) Once WLC is back verify the Boot image version is matching with the Primary. 08. 12. Usage Guidelines. 10. For more. 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 =. 39. (Cisco Controller) >show redundancy summary Redundancy Mode = SSO ENABLED Local State = ACTIVE Peer State = UNKNOWN - Communication Down. I am seeing the SSO is established. Example: Device(config-red)# mode sso: Configures stateful switchover. Standby failures = 3. show redundancy states. Example: Device(config-red)# end: Exits redundancy configuration mode and. Step 2. Cisco IOS XE Software, Version 17. Router(config-red)# end. If I enter SSO mode on the second node I got an error: >config redundancy mode sso WARNING: 1. Usage Guidelines. The First Sign Of Life (FSOL) triggers that are supported on SSO include DHCP proxy (where the iWAG acts as the DHCP proxy server) and DHCP. Step 3:. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. 168. Step 2: mode sso. Operating Redundancy Mode = RPR. 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. 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. redundancy Router(config)# redundancy. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso. Note Enabling SSO initiates a controller reboot. Example: Device (config-red)# mode sso: Configures SSO. 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. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 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. Cisco 3504 WLCs. 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. There are two options for Cisco Wireless Controller redundancy solutions, either Backup Controllers or High Availability, depending on the firmware version of WLC's, failover time requirement, and budget. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine. x. Supervisor engine redundancy allows OIR of the redundant supervisor engine for maintenance. This example shows how to set the redundancy mode to SSO: Device (config)# redundancy Device (config-red)# mode sso Device (config. 3. Example: Device(config-red)# mode sso: Configures stateful switchover. 3 255. config redundancy mode sso. 48. end. When the controller works as a host for spanning tree, ensure that you configure portfast trunk in the uplink switch using. Check if Auto-Boot is Enabled 6. Step 2: mode sso. Table 13-5 details the redundancy modes you can configure on supported switch platforms. 133 voor de tweede, WLC2 genoemd. redundancy 4. 2. This command supports Route Processor Redundancy Plus (RPR+) with the Cisco uBR10012 router. 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 (CAT9K_IOSXE), Version 16. Step 1. Once the WLCs are back up then go ahead and reconfigure the HA AP-SSO on the Controller by issuing the following command: Controller>config redundancy mode sso. Step 5. When a failover occurs, the standby device seamlessly takes over, starts performing traffic forwarding services, and maintains a dynamic routing table. Sw-4510R (config-red)#>redundancy Sw-4510R (config-red)#mode sso Changing to sso mode will. 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 =. The mode sso command can be entered only from within redundancy configuration mode. Specify a standby slot, by entering the power redundancy-mode redundant n+1 standby-PSslot command. Step 4. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. To re-enable SSO, execute the command Config redundancy sso on the primary and secondary controllers. It is not recomended to configure RA (Registration Authority) as it is not validated. Step 5. 6. Router(config)# mode sso. mode SSO 5.