(Optional) Ensure network connectivity. The system has experienced 4 switchovers. SSO Operation. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. 0. End with CNTL/Z. 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. Enters redundancy configuration mode. Enters global configuration mode. Router(config)# mode sso. LACP and PAGP is not supported in HA mode in releases until, and including, Cisco IOS XE Gibraltar 16. In Cisco Wireless LAN Controllers, high availability is achieved with redundancy. mode sso. Sets the redundancy configuration mode to SSO on both the active and standby RP. NSF with SSO supports IP Version 4 traffic and protocols only; NSF with SSO does not support IPv6 traffic. A router in SSO redundancy mode checkpoints Layer 2 protocol states and line card operation. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE), Experimental Version 16. 0 を. Enter configuration commands, one per line. Enters redundancy configuration mode. Router(config-red)# end. 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. On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. 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. Redundancy Mode Support in Cisco IOS Releases Platform Mode 12. 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. Usage Guidelines. The Cisco RF Gateway 10 Supervisor Engine 7-E uplink ports are not recommended for data or management traffic in Supervisor Redundancy Mode. Step 2. 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. (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. Usage Guidelines. 除了这些IP地址外，还. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. #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. 05-25-2012 08:56 AM - edited 03-07-2019 06:54 AM. This mode utilizes two electrical grids, each one powering a half module within each power supply. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Router# copy running. Router(config-red)# end. Step 6. Example: Device#. Step 4. Hope that helps! -Bradley Selzer. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. • 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. 56. 6. 0 を. 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# show redundancy states. Router# copy running-config. 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 =. Redundancy may not work due to differences between the Cisco. 2. 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. SSO works with Cisco NSF, which helps reduce the switchover downtime on Layer 3. 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 switches in the stack to support SSO mode. To re-enable SSO, execute the command Config redundancy sso on the primary and secondary controllers. Note After configuring SSO mode, the standby RP will automatically reset. Step 5. Enters redundancy configuration mode. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. mode sso. SSO pair connected to upstream VSS pair with split links and RP connected back to back. If a switch is configured for SSO mode, then stand-by supervisor engine stops at " FIB table synchronization" and waits for active supervisor to fail. Example: Router(red-config)# exit: Exits to global configuration mode. The Broadband High Availability Stateful Switchover feature allows you to configure subscriber redundancy policies that tune the synchronization process. x. My Secondary Switch is in disable state despite its in SSO mode. Configurations. 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. Operating Redundancy Mode = RPR. client count = 149 client_notification_TMR = 30000 milliseconds. Learn more about how Cisco is using Inclusive Language. First you can completely configure the first WLC as you wish. 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. 48. n+1 redundant Mode—n number of power supply modules are active (n can be one to seven pput ower supply modules). The redundancy port in standalone controllers and the redundancy VLAN in Cisco WiSM2 are assigned. When an RP is active and the other RP is standby, SSO enables the standby RP to take over if the active RP fails. 1. The default mode for the Cisco 12000 series routers is RPR. Step 4. The ISSU feature allows deployment of new features, hardware, services, and maintenance fixes in a procedure that is seamless to end users. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. Router(config-red)# mode sso. Information About Redundancy. 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. Step 5: end. Switch# show redundancy states. Redundancy may not work due to differences between the Cisco IOS releases. auto-sync running-config. 48. Usage Guidelines. Step 1. 2. Step 5. 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 =. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. Hardware Mode = Simplex. What is redundancy mode SSO? 2. Chapter 5 Configuring Supervisor Engine Redundancy Using RPR and SSO About Supervisor Engine Redundancy SSO supports stateful switchover of the following Layer 2 features. ”. 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. 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. With RPR+, the redundant supervisor engine is fully initialized and configured, which shortens the. 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. 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. 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. 03. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Enters redundancy configuration mode. 2 255. Cisco StackWise Virtual Redundancy. Step 5: exit. Description. With NSF/SSO, peer networking devices do not experience routing flaps. If controller1 is configured with 9. mode sso. 0. 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 =. Cisco SSO (frequently used with NSF) minimizes the time a network is unavailable to its users following a switchover while continuing to forward IP packets. What is stateful switch over? 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. Check if Switches are in SSO Mode 5. Maintenance Mode = Disabled. We have an SSO HA implementation with 2x 5520 (both AIR-CT5520-K9), software version 8. Router# configure terminal. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. SSO is supported in Cisco IOS-XE Release 3. Step 5: end. The. Note Use the show redundancy and show issu state commands throughout the upgrade to verify the status of the upgrade. end. 61 /24. Before you begin the ISSU process, verify the redundancy mode for the system. License for 100 APs, 96 APs in use. Redundancy-MGNT: 192. Returns to EXEC mode. Maintenance Mode = Disabled. show redundancy Redundant System Information :-----Available system uptime = 11 hours, 31 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none. Configuring Cisco NSF with SSO • FindingFeatureInformation,page1 • PrerequisitesforNSFwithSSO,page1 • RestrictionsforNSFwithSSO,page2. The system has experienced 4 switchovers. 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 =. Router(config-red)# end. Catalyst 4500/4500-X series switches' VSS does not support route processor redundancy (RPR) mode. Step 2 Router(config-red)# mode sso Configures SSO. It designates one of the RPs as the active RP and the other as the standby. SSO is supported in Cisco IOS Release 12. 3. Enters redundancy configuration mode. 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 =. The mode sso command can be entered only from within redundancy configuration mode. SSO is supported in Cisco IOS Release 12. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up. Redundancy may not work due to differences between the Cisco IOS releases. Check the Current ISSU and Install States 7. 4) Once WLC is back verify the Boot image version is matching with the Primary. mode sso. 12 255. 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. Router(config)# mode sso. 1 onwards, the method to configure the gateway IP. Current Processor Information :----- Active Location = slot 1 Current Software state = ACTIVE. Enters redundancy configuration mode. end. Example: Device(config-red)# exit: Exits redundancy. Cisco SSO Operation. The mode sso command can be entered only from within redundancy configuration mode. 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. Redundancy may not work due to differences between the Cisco IOS. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. 2(20)EWA and later releases. SSO pair connected to upstream HSRP active and standby and RP connected via upstream setNow, let’s focus on Cisco SSO Configuration and learn how to configure SSO on Cisco routers. Stateful Switchover enabled routers will always checkpoint line card. 48. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. e. ホット スタンバイ WLC の設定. Last switchover reason = user_forced. 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. (Operational) = sso Redundancy Mode. The mode sso command can be entered only from within redundancy configuration mode. 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. It is setup in the below settings but I am not running a pair of these switches. 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. 3. SSO-The show module command displays Hot. The show redundancy and show issu state commands verify that redundancy mode is enabled and that SSO and NSF are configured. The configuration on the active controller is synched to the standby controller via the redundant port. mode sso. For information about the in-chassis standby supervisors, enter the show redundancy rpr command in privileged EXEC mode on the Cisco StackWise Virtual active supervisor. 08. The processing of mirroring this information between route processors is known as checkpointing. 2(20)EWA and later releases. and the redundant supervisor engine boots into a partially-initialized state in RPR mode and a fully-initialized state in SSO mode. 90. Router# show redundancy states. Redundancy may not work due to differences between the Cisco. 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. 2. Redundancy may not work due to differences between the Cisco IOS releases. Cisco 5500 Series WLCs . Configuration Examples for DHCP High Availability. main-cpu. Check if Auto-Boot is Enabled 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. Remove SSO HA Configuration: 5. Cisco Employee. Active WLC 上で SSO の mode を disable にする. Router(config)# mode sso. 1. From Cisco IOS XE Amsterdam 17. 1 Disabling SSO on HA Pair 1 On primary controller, disable SSO using the command: config. Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up client count = 115Cisco 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. Cisco Stateful Switchover (SSO) is one of the redundancy mechanisms used in networking. SSO is supported in Cisco IOS Release 12. 170 West Tasman Drive. 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. 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. 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. Step 3. 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. Redundancy may not work due to differences between the Cisco IOS releases. • 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. ※ このドキュメントでは AireOS 8. Enters redundancy configuration mode. What is SSO switchover? 5. Usage Guidelines. Router(config)# redundancy. The software will prompt to reboot the Standby Supervisor (in slot 5) - confirm to reboot - exit configuration mode and save the configuration. 3. 39. 1. SSO is supported in Cisco IOS Release 12. 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. Example: Router(config)# redundancy Router(config-red)# Enters redundancy configuration 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. Table 13-5 details the redundancy modes you can configure on supported switch platforms. 2(20)EWA and later releases. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :----- Active Location = slot 2. Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. Enters global configuration mode. What can be the reason. 0. Refer to the Catalyst 4500 Series Switch Cisco IOS Command Reference and related publications. Configuraties. In the RPR mode, one of the supervisor engines is active and operational, while the second supervisor engine is in the standby mode. 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. Router(config)# mode sso. Step 3. Displays the operating redundancy mode. For more information, see Chapter 1, “Route Processor Redundancy (RPR). NSF Operation. Example: Router>enable Router#configure terminal Router(config)#redundancy Router(config-r)#mode none Router(config-red)#application redundancy Router(config-red-app)#group 1 Configure a name for the redundancy group. Communications = Up. Step 6. Step 5. Cisco IOS Software, Catalyst 4500 L3 Switch Software. Example: Device(config-red)# exit: Exits redundancy. Router# show running-config. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. With NSF/SSO, peer networking devices do not experience routing flaps. The NSF/SSO—L2VPN Pseudowire Redundancy feature enables you to set up your network to detect a failure in the network and reroute the L2 service to another endpoint that can continue to provide service. Configures SSO. in my case it was secondary. Note Enabling SSO initiates a controller reboot. . 2(20)EWA and later releases. 3 255. mode sso. (Optional) Backup the Startup Config and Running Config files of the controllers. 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. 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. Example: Device (config-red)# mode sso: Configures SSO. mode sso. Step 4: mode SSO Example: Router(config)# mode SSO Configures SSO. The primary will reboot to enable sso and pull the config from the current active (secondary in this case) unit xml on boot. 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. (Optional) Backup the Startup Config and Running Config files of the controllers. If the command is not found in. 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 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. Step 4. 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. 168. Configured Redundancy Mode = sso. Step 3: end. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. In SSO mode . This chapter describes how to configure supervisor engine redundancy using Cisco nonstop forwarding (NSF) with stateful switchover (SSO). For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Enters redundancy configuration mode. . 7) Initiate the reset system self make sure that to verify all the AP's Up and Primary working fine. 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. Step 6: mode sso. Check the Boot Mode 3. Check the Boot Mode 3. Returns to EXEC mode. end. What is redundancy mode? 3. Note After configuring SSO mode, the standby RP will automatically reset. The default mode for the Cisco 7304 router and Cisco 10000 series routers is SSO. 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. 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. 2(20)EWA and later releases. Communications = Up . Switch(config-red)# mode sso. NSF and SSO must be configured before attempting an ISSU. (Cisco Controller) >show redundancy summary. x [S2C-build-v16x_throttle-4064-/. mode sso. 6. Configured Redundancy Mode = sso. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 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. In Cisco Wireless LAN Controllers, redundancy is achieved in two ways— n+1 and AP SSO redundancy. 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. 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. Note After configuring SSO mode, the standby RP will automatically reset. Convert RPR to SSO mode, this will force a reboot on standby supervisor. 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. 2. 6. End with CNTL/Z. x [S2C-build-v16x_throttle-4064-/. Step 3 Router# show running-config Verifies that SSO is enabled. Example: Device(config-red)# exit: Exits redundancy. In Cisco Wireless LAN Controllers, redundancy is achieved in two ways— n+1 and AP SSO redundancy. Verifies that SSO is enabled. show redundancy states. hw-switch switch 1 logging onboard message level 3 redundancy mode sso The new High Availability (HA) feature (that is, AP SSO) set within the Cisco Unified Wireless Network software release version 7. In Cisco Wireless LAN Controllers, high availability is achieved with redundancy. 0. Note Enabling SSO initiates a controller reboot. you then add the SSO redundancy commands on the active supervisor and you can insert the prepared new supervisor. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. The sku on the box for the HA should have this part number: air-ct5508-ha-k9. Verifies that SSO is enabled. Configuring Route Processor Redundancy SSO Mode configure terminal redundancy mode sso main-cpu standby. . To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. It is setup in the below settings but I am not running a pair of these switches. 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. 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. Switchover Time. The mode sso command can be entered only from within redundancy configuration mode. SSO is supported in Cisco IOS Release 12. 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. 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。. 2. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. 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. Copy the New Image to be Upgraded / Downgraded ISSU Workflows - Actual Upgrade One Step Work Flow Three Step Work Flow Post ISSU Checklist Action. Configures SSO. 133，称为WLC2。.