Step 5. Router# copy running-config startup-config %HA-5-MODE:Operating mode is sso, configured mode is sso. end. CiscoStackWiseVirtualRedundancy 15 SSORedundancy 15 NonstopForwarding 16 MultichassisEtherChannels 16 MECMinimumLatencyLoadBalancing 16 MECFailureScenarios 17. Check if Auto-Boot is Enabled 6. Supervisor Module Redundancy. To reload the standby switch if a parser return code (PRC) failure occurs during configuration synchronization, use the policy config-sync reload command in redundancy configuration. If controller1 is configured with 9. 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. Step 2 Router(config-red)# mode sso Configures SSO. Example: Device(config-red)# mode sso: Configures stateful switchover. Router# show running-config. e. Both RPs must run the same Cisco IOS image. SSO Operation. Recovery Mode Yes Yes Default GW Check Yes Yes LACP, PAGP with SSO No Yes SMU for controller patching No Yes. 150. When you configure the controller for HA SSO, the Cisco 600 Series OfficeExtend Access Points are not supported. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 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. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. (Cisco Controller) >show redundancy summary. What is redundancy mode? 3. 0SG and later releases. Communications = Up. 102. I try to setup HA with SSO with 2x WLC 5520 version 8. Usage Guidelines. 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. Cisco IOS XE Software, Version 17. 6. client count = 149 client_notification_TMR = 30000 milliseconds. What is redundancy mode SSO? 2. Step 6. Redundancy may not work due to differences between the Cisco. x. 05 Model Number : C9606R Model Number : C9606R: CAT9600#sh redundancy Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Active Location = Switch 2 Current Software state = ACTIVE Standby Location = Switch 1 Current Software state = STANDBY HOT: CAT9600#show license summary With Stateful Switchover (SSO), Cisco IOS routers with dual RPs can synchronize router configuration and control plane state information. The switch is supports route processor redundancy (RPR). When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. Sw-4510R (config-red)#>redundancy Sw-4510R (config-red)#mode sso Changing to sso mode will. Note Enabling SSO initiates a controller reboot. Enters redundancy configuration mode. 133，称为WLC2。. Displays the operating. in my case it was secondary. 08. 255. 1 onwards, the method to configure the gateway IP. 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. Example: Device(config-red)# mode sso: Configures stateful switchover. Cisco 3504 Controllers. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. Redundancy may not work due to differences between the Cisco IOS. Router# configure terminal. 2016-10-12 10:10 AM 2017-09-01 03:01 AM 更新. Router(config-red)# end. 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. 0. 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. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. 5. 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 stateful switchover and the. Step 5: end. San Jose, California 95134-1706. 48. Operating Redundancy Mode = sso. Check the Boot Mode 3. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. %HA-5-MODE:Operating mode is sso, configured mode is sso. Combined. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Step 5: Enabling SSO reboots the. Switch# show redundancy states. If a switch is configured for SSO mode, then stand-by supervisor engine stops at " FIB table synchronization". Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :----- Active Location = slot 2. Step 5: exit. The mode sso command can be entered only from within 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. Example: Device(config-red)# exit: Exits redundancy. Maintenance Mode = Disabled. Enters redundancy configuration mode. Configuraties. Verifies that SSO is enabled. Step 5: exit. The following is a sample output of the show redundancy rpr command run on the Cisco StackWise Virtual active supervisor:SSO is supported in Cisco IOS Release 12. Example: Device(config-red)# mode sso: Configures stateful switchover. %HA-5-MODE:Operating mode is sso, configured mode is sso. 2(20)EWA 以降のリリースでサポートされます。. 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 5: exit. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Copy the New Image to be Upgraded / Downgraded ISSU Workflows - Actual Upgrade One Step Work Flow Three Step Work Flow Post ISSU Checklist Action. Step 3: end Example: Switch (config-red)# end Returns to 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. First you can completely configure the first WLC as you wish. 配置. Cisco ASR1006 supports the stateful failover from an active Enhanced Services Processor (ESP) to a standby and from an active Route Processor to a standby on the same box. SSO pair connected to upstream VSS pair with RP connected via the upstream set of switches in order to detect gateway down scenario. Returns to EXEC mode. configure redundancy mode sso. 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. Check if Auto-Boot is Enabled 6. Enters redundancy configuration mode. Redundancy State = sso . On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. How To Configure Route Processor Redundancy. 56. Communications = Up . 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. Step 3: end . 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. 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. The Cisco Nexus 9504, 9508, 9516,. main-cpu. 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. This feature is not supported on the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models of the Cisco Catalyst 9500 Series Switches. Last switchover reason = none. When this command is entered, the standby switch is reloaded and begins to work in SSO 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. mode sso. Example: Device (config-red)# end Controller # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE),Experimental Version 16. 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. 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 not necessary to configure the IP address for the redundancy VLAN because the IP address is automatically generated. 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. 2(20)EWA and later releases. 1. 255. Router(config-red)# end. WLC のステータスや設定を確認する. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. 61 /24. Enters redundancy configuration mode. Step 3. (RTU Evaluation License by now) - Network Connection beween the WLC5520: LAG. The mode sso command can be entered only from within redundancy configuration mode. Image Version = Cisco IOS Software, Catalyst L3 Switch Software (CAT9K_IOSXE), Experimental Version 16. 2. Step 6. 3. Hardware Mode = Simplex. 4. +1 is the power supply module reserved for redundancy. シングル構成しているのが片方電源を抜いてもトラップがとばないのです。在本示例中，高可用性 (HA)狀態切換 (SSO)配置在兩個9800-CL例項之間，這些例項運行相同的Cisco IOS軟體版 本，這些例項已配置有獨立的WMI，並且可以通過以下網址訪問的GUI. 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 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 6. 3 allows the AP to establish CAPWAP tunnel with Active WLC and share mirror copy of AP database with Standby WLC. Communications = Up. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso. 0. Step 4. Step 4. 6. . 2(20)EWA and later releases. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine. Stateful Switchover is particularly useful in conjunction with Nonstop. In specific Cisco networking devices that support dual RPs, SSO takes advantage of RP redundancy to increase network availability. Operating Redundancy Mode = RPR. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. The new High Availability (HA) feature (that is, AP SSO) set within the Cisco Unified Wireless Network software release version 7. Configures SSO. 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. Supervisor engine redundancy allows OIR of the redundant supervisor engine for maintenance. Displays the operating redundancy mode. 1. 0. SSO Operation. The routing protocols have been enhanced with NSF-capability and. . Step 5. Router(config)# mode sso. Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :-----Active Location = Switch 2 Current Software state =. end. #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. = 0 Last switchover reason = active unit removed Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. end. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. Example: Router(config)# router bgp 1000Example: Enabling 1:1 Redundancy Stack Mode; Example: Disabling 1:1 Redundancy; Example: Enabling 1:1 Redundancy Stack 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. (CSCec05612)Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide, Release 12. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. 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. Redundancy may not work due to differences between the Cisco. 0. SSO on the other hand is fully initialized. 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. Reason: Software version. Configures SSO. Step 2 Router(config-red)# mode sso Configures SSO. 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. Cisco recommends that you are familiar with stacking, stackwise-virtual (SVL), and "bundle" Vs "install" boot mode related concepts on Catalyst 9K switches. We have an SSO HA implementation with 2x 5520 (both AIR-CT5520-K9), software version 8. SSO is supported in Cisco IOS Release 12. 3 255. SSO-The show module command displays Hot. SSO pair connected to upstream VSS pair with split links and RP connected back to back. Step 2. Router(config-red)# end. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. Enters redundancy configuration mode. To disable Cisco StackWise Virtual, use the no form of this command. Step 4: mode sso. You can use the switch switch-number role command to set the active and standby switch in 1:1 stack mode. %HA-5-MODE:Operating mode is sso, configured mode is sso. Check if Switches are in SSO Mode 5. 3. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Consolidated Platform Configuration Guide, Cisco IOS XE 3. Configures SSO. To enter the redundancy main configuration submode and enable the standby switch, use the main-cpu command in redundancy configuration mode. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Step 4. Step 5. By default, the system synchronizes all system files, which is the typical setting for most applications. Cisco StackWise Virtual Redundancy. Step 2. For WLC 2, go to Console connection: Note Once SSO is enabled, the Standby WLC can be accessed via console connection or via SSH on the service port and on the redundant management interface. Step 5:. Redundancy may not work due to differences between the Cisco IOS releases. With NSF/SSO, peer networking devices do not experience routing flaps. 1. Example: Router(red-config)# mode sso: Sets the redundancy configuration mode to SSO. SSO pair connected to upstream HSRP active and standby and RP connected via upstream set Now, let’s focus on Cisco SSO Configuration and learn how to configure SSO on Cisco routers. 56. Redundancy Mode (Operational) = Non-redundant Redundancy Mode (Configured) = sso Redundancy State = Non Redundant Maintenance Mode = Disabled Manual Swact = disabled (system is simplex (no peer unit)) Communications = Down Reason: Simplex mode client count = 103 client_notification_TMR = 30000 milliseconds RF debug mask = 0x0Go to solution. 2(20)EWA and later releases. (Operational) = sso Redundancy Mode. There are three modes in redundancy for the standby supervisor when native Cisco IOS Software is used: RPR-The show module command displays Cold. SSO is supported in Cisco IOS Release 12. 5 and the other is running 3. EMD EARLY DEPLO. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Enters redundancy configuration mode. Example: Device(config-red)# end: Exits redundancy configuration mode and. Route Processor Redundancy is supported only on routers that support dual RSPs. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 10. Router(config)# redundancy. Configured Redundancy. main. Step 4. On the standby controller, re-enter the correct IP addresses corresponding to the management and dynamic interfaces. 4) Once WLC is back verify the Boot image version is matching with the Primary. SSO is supported in Cisco IOS Release 12. Step 4. Switchovers system experienced = 0. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. 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. Enters configuration mode. Step 5. SSO is supported in Cisco IOS Release 12. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. It is not recomended to configure RA (Registration Authority) as it is not validated. 150. Router(config)# mode sso. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any given time, while. Both controllers reboot and pair up in the SSO mode. Step 2: mode sso . 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. 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. 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. 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. With RPR, the backup supervisor engine is partially initialized and must reload. Step 4: mode SSO Example: Router(config)# mode SSO: Configures SSO. debug redundancy {infra | facilitator. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up. 2. 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. Note After configuring SSO mode, the standby RP will automatically reset. Step 4: mode sso. And it has to be Layer 2 between the 2 RPs, so either directy connected or through a VLAN. x. Router(config)# mode sso. 0. show redundancy states. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. Supervisor Module Redundancy. Step 6. Example: Device(config-red)# end: Exits redundancy configuration mode and. 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. There are three modes in redundancy for the standby supervisor when native Cisco IOS Software is used: RPR-The show module command displays Cold. This mode does not provide power redundancy. Configuring Route Processor Redundancy SSO Mode configure terminal redundancy mode sso main-cpu standby. 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. Router(config)# redundancy. Step 2. Sets the redundancy configuration mode to SSO on both the active and standby RP. Manual Swact = enabled . 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. Check if There is Sufficient Available Memory on Flash 4. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. 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. End with CNTL/Z. SSO is supported in Cisco IOS Release 12. 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# 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. Configuration Examples for DHCP High. end. † Software. Usage Guidelines. The SSO model monitors the health of the active controller via a redundant (HA) port. 03. 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 supervisor modules to support SSO mode. 39. 168. mode sso. Step 4. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. redundancy 4. Cisco IOS Software, Catalyst 4500 L3 Switch Software. mode sso. Inbox redundancy with Stateful Switchover (SSO) mechanism provides redundancy within the same device. configure redundancy unit secondary. 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. Operating Redundancy Mode = rpr. Step 5. Configured Redundancy Mode = SSO. 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. Enters redundancy configuration mode. Router(config-red)# end. To do this, we will use “redundancy” command under global configuration mode and after that we will select mode with “mode sso” command. Hardware redundancy on the Cisco ASR 1000 Series Routers gives users the following benefits: A failover option—If a processor fails, the standby processor immediately becomes the active processor with little or no delay. SSO pair connected to upstream VSS pair with RP connected via the upstream set of switches in order to detect gateway down scenario. 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. Command Modes. The Cisco Nexus 9504, 9508,. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. Router# show redundancy states. 12. 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. Enters redundancy configuration mode. Step 4 Router# show redundancy states Displays the operating redundancy mode. and the redundant supervisor engine boots into a partially-initialized state in RPR mode and a fully-initialized state in SSO mode. Check if There is Sufficient Available Memory on Flash 4. 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. . 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. My routers only show redundancy mode as none. 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. If active supervisor fails, then standby sup will perform following in sequence: Layer3 protocol initialized, routing tables. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Configured Redundancy Mode = sso. Cisco 3504 WLCs. Step 5: end. Verify the redundancy status using command : show redundancy summary 5. Enters redundancy configuration mode. The stack operates in the 1:1 stack mode with the specified active or standby after reboot. Wrong handling can happen and. 1. Step 3:. Cisco StackWise Virtual operates stateful switchover (SSO) between the active and standby switches. Router# copy running-config. Sets the redundancy configuration mode to SSO on both the active and standby RP. Once you get them on the same version, you will be able to get to SSO. The mode sso command can be entered only from within redundancy configuration mode. Redundancy may not work due to differences between the Cisco IOS releases. Enters redundancy configuration mode. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Both RPs are running the same Cisco.