SSO is supported in Cisco IOS Release 12. 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. The redundancy explained in this article is 1:1, which means that one of the units operates in Active state while the other operates in Hot Standby state. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Enters redundancy configuration mode. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the supervisor modules to support SSO mode. end. configure interface address management 10. Configures SSO. Configure SSO redundancy mode at this time. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Maintenance Mode = Disabled. Note After configuring SSO mode, the standby RP will automatically reset. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Configures SSO. Example: Router(config-red-app-grp)#name cube-ha. 255. 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. Supervisor engine redundancy allows OIR of the redundant supervisor engine for maintenance. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE), Experimental Version 16. Example: Router(config)# exit Example: Router # Enters redundancy configuration mode. ) To minimize down time during software changes on the supervisor engine, load the new image onEnters redundancy configuration mode. Cisco IOS XE Software, Version 17. Step 5. Example: Router(red-config)# exit: Exits to global configuration mode. Enters global configuration mode. core-7606-01#show redundancy . Learn more about how Cisco is using Inclusive Language. The mode sso command can be entered only from within redundancy configuration mode. x. On the standby controller, re-enter the correct IP addresses corresponding to the management and dynamic interfaces. Step 5. Heres the redundancy cfg: redundancy. Step 5:. 90. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Consolidated Platform Configuration Guide, Cisco IOS XE 3. Step 5: exit. 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. 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. Step 4. SSO pair connected to upstream VSS pair with RP connected via the upstream set of switches in order to detect gateway down scenario. Verify the redundancy status using command : show redundancy summary 5. In specific Cisco networking devices that support dual RPs, SSO takes advantage of RP redundancy to increase network availability. 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. Displays the operating redundancy mode. Cisco 5520 wireless LAN controller has a failover RP Port. Step 5. +1 is the power supply module reserved for redundancy. 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. The following guidelines and restrictions apply to supervisor engine redundancy: •If SSO mode cannot be established between the active and standby supervisor engines because of an incompatibility in the configuration file, a mismatched command list (MCL) is generated at the active supervisor engine and a reload into RPR. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 101. Step 4. end. Configures SSO. Standby として動作していた WLC のポートを変更するか、コンフィグの初期化する. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. = Non-redundant Redundancy Mode (Configured) = sso Redundancy State = Non. Enters redundancy configuration 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. 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. • 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. Route Processor Redundancy (RPR) refers to the provision of support for the redundancy feature. 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. High Availability SSO Deployment Guide for Cisco Catalyst 9800 Series Wireless Controllers, Cisco IOS XE Amsterdam 17. restart the Wireless controller in maintenance mode. When an RP is active and the other RP is standby, SSO enables the standby RP to take over if the active RP fails. If a VSS does not meet the requirements for SSO redundancy, it will be incapable of establishing a relationship with the peer switch. show redundancy Redundant System Information :-----Available system uptime = 11 hours, 31 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none. 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. It designates one of the RPs as the active RP and the other as the standby. 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 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 =. SSO HSRP. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. The VSS runs stateful switchover (SSO) between the VSS active and standby supervisor engines (see Figure 5. 2. Router# show redundancy Redundant System Information :-----Available system uptime = 1 hour, 0 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. 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 =. 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 =. Manual Swact = enabled . SSO provides RP redundancy by establishing one of the RPs as the active processor and the other RP as the standby processor. For more information, see Chapter 1, “Route Processor Redundancy (RPR). Copy the New Image to be Upgraded / Downgraded ISSU Workflows - Actual Upgrade One Step Work Flow Three Step Work Flow Post ISSU Checklist Action. SSO is supported in Cisco IOS Release 12. Redundancy may not work due to differences between the Cisco. Step 4: mode sso. You can configure an n+1 redundant mode. Step 4: 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. NSF with SSO supports IP Version 4 traffic and protocols only; NSF with SSO does not support IPv6 traffic. Enters redundancy configuration mode. Maintenance Mode = Disabled. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. In case of n+1 redundancy, access points are configured with primary, secondary, and tertiary controllers. Redundancy Mode = SSO ENABLED. One switch is running 3. Router> enable. Book Contents Book Contents. If any of those mismatched commands are executed on the active switch, the standby. Operating Redundancy Mode = RPR. 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. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy 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. After rebooting the primary controller changed into Maintanence Mode. To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. 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. Redundancy Mode Support in Cisco IOS Releases Platform Mode 12. Router# copy running-config startup-config If SSO mode cannot be established between the active and standby switches because of an incompatibility in the configuration file, a mismatched command list (MCL) is generated at the active switch and a reload into route processor redundancy (RPR) mode is forced for the standby switch. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. When we simulate a problem by powering off the Active Controller, the standby controller will reboot, all of our APs loose. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. (Optional) Backup the Startup Config and Running Config files of the controllers. Stateful Switchover enabled routers will always checkpoint line card. Router (config-red)# end. This command supports Route Processor Redundancy Plus (RPR+) with the Cisco uBR10012 router. Communications = Up. This feature also functions in an nonstop forwarding (NSF) and stateful switchover (SSO) environment. To. 2. 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. Step 5:. Hope that helps! -Bradley Selzer. 4. Here is the output from the standby while booting up:. redundancy mode sso. Catalyst 4500/4500-X series switches' VSS does not support route processor redundancy (RPR) mode. What is redundancy mode? 3. Verifies that SSO is enabled. 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. Example: Device (config-red)# mode sso: Configures SSO. 7) Initiate the reset system self make sure that to verify all the AP's Up and Primary working fine. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. 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. Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. Step 5. Enters redundancy configuration mode. Enters redundancy configuration mode. Switch# show running-config. @Ivan Shirshin wrote: Hi, It is likely standby sup is stuck in boot or ROMMON mode as it is showing Other status in the outputs above. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = Switch 2 Current Software state =. Step 5. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. Check the Boot Mode 3. Check if There is Sufficient Available Memory on Flash 4. Step 5. Catalyst 4500 series switches allow a redundant supervisor engine to take over if the active supervisor engine fails. Step 6. SSO Operation. mode sso. Switch# show. Router# configure terminal Router(config)# redundancy Router(config)# mode SSO Router(config)# exit Router# reload Stateful Switchover. (NSF) with a stateful switchover (SSO) when a supervisor-level failure occurs. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. Enters redundancy configuration mode. Step 3 Router# show running-config Verifies that SSO is enabled. 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. hw-switch switch 1 logging onboard message level 3. Hi! A custommer of mine tried to configure HA AP-SSO with two 5508 controllers. RF debug mask = 0x0. Usage Guidelines. The mode sso command can be entered only from within redundancy configuration mode. Example: Device(config-red)# mode sso: Configures stateful switchover. Copy the New Image to be Upgraded / Downgraded ISSU Workflows - Actual Upgrade One Step Work Flow Three Step Work Flow Post ISSU Checklist Action. x [S2C-build-v16x_throttle-4064-/. 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. = Non-redundant Redundancy Mode (Configured) = sso Redundancy State = Non Redundant. 6. 9. SSO is supported in Cisco IOS Release 12. 4. 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. Step 4: mode SSO Example: Router(config)# mode SSO: Configures 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 4. ホット スタンバイ WLC の設定. 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. 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. Refer to the Catalyst 4500 Series Switch Cisco IOS Command Reference and related publications. SSO is supported in Cisco IOS Release 12. SSO は、Cisco IOS Release 12. Example: Device(config-red)# mode sso: Configures stateful switchover. If I enter SSO mode on the second node I got an error: >config redundancy mode sso WARNING: 1. Solved: Hi, I need help to get a HA SSO setup running. Displays the operating redundancy mode. With RPR, the backup supervisor engine is partially initialized and must reload. Router(config)# redundancy. The default mode for the Cisco uBR10012 universal broadband router is SSO. Redundancy Mode = SSO ENABLED. 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. Router# show running-config. The Cisco Nexus 9504, 9508, 9516,. Router# copy running. The system has experienced 4 switchovers. auto-sync startup-config. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Verifies that SSO is enabled. Displays the operating. Cisco IOS Nonstop Forwarding (NSF) always runs with stateful switchover (SSO) and provides redundancy for Layer 3 traffic. 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. while restarting the secondary WLC that was in maintenance mode, check the "Bulksync status" of redundancy summary in primary WLC and wait for until it turn as. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Step 5. Check if There is Sufficient Available Memory on Flash 4. Usage Guidelines. 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. Supervisor Module Redundancy. A critical component of SSO and Cisco HA technology is the cluster control manager (CCM) that manages session re-creation on the standby processor. 12 255. Step 5. Note Enabling SSO initiates a controller reboot. Step 6. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any given time, while. 168. 0. Returns to EXEC mode. The Cisco Nexus 9504, 9508,. end. 2. Step 3:. 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. On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. redundancy 4. Enters redundancy configuration 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. 2. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. We have an SSO HA implementation with 2x 5520 (both AIR-CT5520-K9), software version 8. 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. The processing of mirroring this information between route processors is known as checkpointing. Step 5: end. The Supervisor 7-E card has four uplink ports on its front panel. 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. A redundancy VLAN is connected to the redundant port on Cisco WiSM2 through the backplane. And the output of the "show redundancy" is: Hardware Mode = Duplex. Maintenance Mode = Disabled. running with image version 8. . RPR+-The show module command displays Warm. Redundancy may not work due to differences between the Cisco. 1. 0 を. SSO pair connected to upstream VSS pair with RP connected via the upstream set of switches in order to detect gateway down scenario. 2(20)EWA and later releases. Step 4: show running-config Example:Enters redundancy configuration mode. Step 6. = 0 Last switchover reason = active unit removed Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. 2(20)EWA and later releases. To enter the redundancy main configuration submode and enable the standby switch, use the main-cpu command in redundancy configuration mode. The mode sso command can be entered only from within redundancy configuration mode. 2. Step 9: router bgp autonomous-system-number. Copy the New Image to be Upgraded / Downgraded ISSU Workflows - Actual Upgrade One Step Work Flow Three Step Work Flow Post ISSU Checklist Action. The state of these features is preserved between both the active and standby. Enter configuration commands, one per line. Step 4. 12. Step 3: end. Wrong handling can happen and. To disable Cisco StackWise Virtual, use the no form of this command. 2(20)EWA and later releases. The problem is a version mismatch. Usage Guidelines. By default, the system synchronizes all system files, which is the typical setting for most applications. Step 4. 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. 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. 131. Redundancy Mode (Operational) = sso . VRRP and SSO can coexist but both features work independently. 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. 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. Usage Guidelines. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up. 2. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. Running the Supervisor card in RPR or SSO operating mode enables Supervisor redundancy. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. 4. This chapter consists of these sections:. 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 may not work due to differences between the Cisco IOS releases. 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. The processing of mirroring this information between route processors is known as checkpointing. 第一個IP地址10. 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. 0. San Jose, California 95134-1706. Step 3 Router# show running-config Verifies that SSO is enabled. Router# copy running. The active pseudowire. Switch(config-red)# end. SSO redundancy mode provides all the functionality of RPR+ mode in that IOS software is fully initialized on the both RSPs. config redundancy mode sso. end. 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. Only the top two ports are. 61 /22. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Router(config)# mode sso. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 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. Example: Device(config-red)# mode sso: Configures stateful switchover. The stack operates in the 1:1 stack mode with the specified active or standby after reboot. 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. The DHCP high availability features are enabled by default when the redundancy mode of operation is set to SSO. In Cisco Wireless LAN Controllers, redundancy is achieved in two ways— n+1 and AP SSO redundancy. Cisco 3504 Controllers. = SSO Redundancy Mode (Configured) = SSO Redundancy State = Non Redundant Manual Swact = disabled (system is simplex (no peer unit)) Communications = Down Reason:. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. 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: 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. It is not recomended to configure RA (Registration Authority) as it is not validated. 3. Enters redundancy configuration mode. Example: Device(config-red)# mode sso: Configures stateful switchover. 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. In the RPR mode, one of the supervisor engines is active and operational, while the second supervisor engine is in the standby mode. SSO is supported in Cisco IOS Release 12. Note Enabling SSO initiates a controller reboot. Redundancy may not work due to differences between the Cisco IOS. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the supervisor modules to support SSO mode. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. Switch(config-red)# mode sso. Cisco Employee. The mode sso command can be entered only from within redundancy configuration mode. config redundancy mode sso. Switchover Process Restrictions † If any changes to the fabric configuration happen simultaneously with an RP switchover, the chassis is reset and all line cards are reset. Step 3. With NSF/SSO, peer networking devices do not experience routing flaps. Redundancy may not work due to differences between the Cisco IOS releases. The mode sso command can be entered only from within redundancy configuration mode. How To Configure Route Processor Redundancy. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the supervisor modules to support SSO mode. Note SSO is not supported if the IOS-XE software is running in the LAN Base mode. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. exit 6. Router(config)# mode sso. 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. In Cisco Wireless LAN Controllers, high availability is achieved with redundancy. Step 4 Router# show redundancy states Displays the operating redundancy. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Enters configuration mode. Redundancy configuration (config-red)This command supports Route Processor Redundancy (RPR) with the Cisco uBR10012 router. Management: 192.