Enters redundancy configuration mode. 133 voor de tweede, WLC2 genoemd. x [S2C-build-v16x_throttle-4064-/. What is RPR redundancy?. Stateful Switchover enabled routers will always checkpoint line card. Step 4. Step 4. 0. The active pseudowire. 3. 6. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. 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. config redundancy mode sso. This example shows how to set the redundancy mode to SSO: Device (config)# redundancy Device (config-red)# mode sso Device (config. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Step 4. x. 5 and the other is running 3. Step 4. 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. Step 6. If the command is not found in. 6. mode SSO 5. 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 Detail] ページが表示されます。 ステップ 10 [Monitor] > [Redundancy] > [Statistics] を選択し、HA ペアの冗長統計情報を表示します。 [Redundancy Statistics] ページが表示されます。 ステップ 11 : 次の手順に従って、ピア ネットワーク ルートを設定します。3. Example: Device(config-red)# mode sso: Configures stateful switchover. License for 100 APs, 96 APs in use. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 1 Disabling SSO on HA Pair 1 On primary controller, disable SSO using the command: config. 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 5. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. Once config is bulk-synced the primary unit is now in HOT STANDBY. 255. Example: Device(config-red)# mode sso: Configures stateful switchover. Redundancy may not work due to differences between the Cisco. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Step 5 . Router(config-red)# end. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. 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. It is not necessary to configure the IP address for the redundancy VLAN because the IP address is automatically generated. Catalyst 4500/4500-X series switches' VSS does not support route processor redundancy (RPR) mode. Example: Device(config-red)# mode sso: Configures stateful switchover. To enter the redundancy main configuration submode and enable the standby switch, use the main-cpu command in redundancy configuration mode. VRRP and SSO can coexist but both features work independently. Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 3 850 L3 Switch Software (CAT3850-UNIVERSALK9-M), Version 03. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. If the HA unit is not an HA sku, then you need a minimum of 50 ap license. Redundancy may not work due to differences between the Cisco IOS releases. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. 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. Usage Guidelines. e. The available power is the total power capacity of all power supplies. NSF Operation. The NSF capability on Cisco Catalyst 9300 Series Switches can. 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. mode SSO Router(config)# mode SSO. Usage Guidelines. %HA-5-MODE:Operating mode is sso, configured mode is sso. Step 5. Communications = Up. Step 4. Step 4: mode sso. Router# show redundancy states. 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 =. San Jose, California 95134-1706. 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. Enters redundancy configuration mode. Example: Device (config-red)# mode sso: Configures SSO. Step 5. 2(20)EWA and later releases. Exits redundancy configuration mode and returns the switch to privileged EXEC 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 on both supervisor engines, which ensures that all modules are operating in dCEF mode and simplifies switchover to the redundant supervisor engine. Cisco StackWise Virtual Redundancy. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. 2. Save the configuration on the controller. Step 3. 149, you need to execute the following command in controller1 for redundancy mode: redun-management interface Vlan vlan-interface-no chassis chassis-number address ip-address chassis chassis-number address ip-addressAvailable system uptime = 6 weeks, 6 days, 5 hours, 2 minutes. show redundancy states. end. Note Enabling SSO initiates a controller reboot. mode SSO 5. Device(config-red)# mode sso: Configures stateful switchover. Verifies that SSO is enabled. Both controllers reboot and pair up in the SSO mode. 3 and 7. Supervisor Module Redundancy. redundancy Router(config)# redundancy. Router# copy running. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. Operating Redundancy Mode = sso. We will definitely upgrade are fus code. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. The device supports fault resistance by allowing a standby switch to take over if the active device becomes unavailable. In Cisco Wireless LAN Controllers, high availability is achieved with redundancy. Enters redundancy configuration mode. Router# configure terminal Router(config)# redundancy Router(config)# mode SSO Router(config)# exit Router# reload Stateful Switchover. redundancy 4. Example: Device(config-red)# mode sso: Enables the redundancy mode of operation to SSO. Router# copy running-config. For WLC 1, go to Monitor > Redundancy > Summary: b. Wrong handling can happen and. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. Step 5. Router# configure terminal. 0. end. 3SE (Catalyst 3850 Switches) 8 OL-30686-01. Step 5: Enabling SSO reboots the. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC 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. In the RPR mode, one of the supervisor engines is active and operational, while the second supervisor engine is in the standby mode. Configures SSO. Both RPs are running the same Cisco. 1. Service-Port: 192. A router in SSO redundancy mode checkpoints Layer 2 protocol states and line card operation. insrc-redundant. 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. The. 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. Redundancy may not work due to differences between the Cisco IOS releases. Note Use the show redundancy and show issu state commands throughout the upgrade to verify the status of the upgrade. SRM is inherent with SSO, which brings up the standby route processor. 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. Chapter 5 Configuring Supervisor Engine Redundancy Using RPR and SSO About Supervisor Engine Redundancy SSO supports stateful switchover of the following Layer 2 features. The state of these features is preserved between both the active and standby. 2SXF OL-3999-08 8. SSO Operation SSO is supported in Cisco IOS Release 12. 2(20)EWA 以降のリリースでサポートされます。. 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. On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. 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 mode. 0 10. 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. Verifies that SSO is enabled. For more. To enable Cisco StackWise Virtual on a switch, use the stackwise-virtual command in the global configuration mode. The primary will reboot to enable sso and pull the config from the current active (secondary in this case) unit xml on boot. Maintenance Mode = Disabled . Step 5. Step 4: mode sso. Example: Device#. SSO pair connected to upstream VSS pair with RP connected via the upstream set of switches in order to detect gateway down scenario. SSO functions in networking devices (usually edge devices) that support dual RPs. SSO is supported in Cisco IOS Release 12. The mode sso command can be entered only from within redundancy configuration 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. Returns to EXEC mode. 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. Cisco NSF helps to suppress routing flaps in SSO-enabled devices, thus reducing network instability. 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. 2 (11)BC3. end. It is setup in the below settings but I am not running a pair of these switches. 2(20)EWA and later releases. 5. Step 6. 2(20)EWA and later releases. 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. Example: Device (config-red)# mode sso: Configures SSO. The mode sso command can be entered only from within redundancy configuration mode. Step 3. 56. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso. If peer unit's management and/or redundancy management entries are present as mobility members please remove them before enabling redundancy. Communications = Up . Usage Guidelines. SSO HSRP. 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. The sku on the box for the HA should have this part number: air-ct5508-ha-k9. This feature is not supported on the C9500-12Q, C9500-16X, C9500-24Q, C9500-40X models of the Cisco Catalyst 9500 Series Switches. Enters redundancy configuration mode. mode sso. 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 =. Step 5. 147 as the Redundancy Management IP and controller2 with 9. † Software. Communications = Up. Check the Boot Mode 3. 12. Configured Redundancy. 48. IP-adres 10. 151. . Table 13-5 details the redundancy modes you can configure on supported switch platforms. 6. Step 4: mode sso. NSF with SSO supports IP Version 4 traffic and protocols only; NSF with SSO does not support IPv6 traffic. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating. When this command is entered, the standby supervisor module is reloaded and begins to work in SSO mode. SSO is supported in Cisco IOS-XE Release 3. Step 3 Router# show running-config Verifies that SSO is enabled. Step 4. What can be the reason. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. Go to solution. 39. Redundancy may not work due to differences between the Cisco. Cisco IOS XE Software, Version 17. 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. Switch(config-red)# end. Enters redundancy configuration mode. Switch# show running-config. Enters redundancy configuration mode. 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 9: router bgp autonomous-system-number. 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 =. . Check if Auto-Boot is Enabled 6. Current Processor Information :----- Active Location = slot 1 Current Software state = ACTIVE. 4. SSO on the other hand is fully initialized. Enter config redundancy mode SSO command to enable 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. 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. This mode does not provide power redundancy. 4) Once WLC is back verify the Boot image version is matching with the Primary. Redundancy may not work due to differences between the Cisco IOS releases. SSO is supported in Cisco IOS Release 12. Note After configuring SSO mode, the standby RP will automatically reset. Router(config-red)# end. Communications = Up . Redundancy configuration (config-red)This command supports Route Processor Redundancy (RPR) with the Cisco uBR10012 router. Step 2. I tried to switch on SSO mode on both wlc 5520. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any. Switchovers system experienced = 0. Step 2. 90. Note After configuring SSO mode, the standby RP will automatically reset. 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. 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. 7) Initiate the reset system self make sure that to verify all the AP's Up and Primary working fine. 10. 255. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. 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. On primary controller, disable SSO using the command: Config redundancy mode disable The Active and Standby WLCs. SSO is supported in Cisco IOS Release 12. 2. 2(20)EWA and later releases. Router# configure terminal. Step 3:. AP SSO set within the Cisco Unified Wireless Network software release v7. Step 4: mode sso. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. With NSF/SSO, peer networking devices do not experience routing flaps. Step 5: exit. config redundancy mode sso. Redundancy Mode (Operational) = sso . Step 3. Active WLC 上で SSO の mode を disable にする. Initiate a switchover using the command redundancy force-switchover. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up. This feature is supported on all controller models supporting HA SSO feature: Cisco 8500 Series Controllers . 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. configure redundancy mode ssoEnters redundancy configuration mode. cisco Systems, Inc. ※ このドキュメントでは AireOS 8. 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. redundancy 4. All unsaved configuration will be saved. 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. Check if There is Sufficient Available Memory on Flash 4. Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. SSO is supported in Cisco IOS Release 12. Manual Swact = enabled . Supervisor Module Redundancy. LACP and PAGP is not supported in HA mode in releases until, and including, Cisco IOS XE Gibraltar 16. 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. 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. 2. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. 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. 168. redundancy mode sso. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Step 5: end. Step 6 . 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. 3 allows the AP to establish CAPWAP tunnel with Active WLC and share mirror copy of AP database with Standby WLC. Redundancy may not work due to differences between the Cisco IOS. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. 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. The standby will sync its configuration from. end. The Broadband High Availability Stateful Switchover feature allows you to configure subscriber redundancy policies that tune the synchronization process. In case of n+1 redundancy, access points are configured with primary, secondary, and tertiary controllers. The mode sso command can be entered only from within redundancy configuration mode. 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. I try to setup HA with SSO with 2x WLC 5520 version 8. The VSS runs stateful switchover (SSO) between the VSS active and standby supervisor engines (see Figure 5. client count = 109 . 2016-10-12 10:10 AM 2017-09-01 03:01 AM 更新. 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. Switch-1(config)# platform hardware vsl pfc mode non-xl (Optional) Sets the PFC operating mode to PFC4 on Chassis A. see. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. mode sso. Convert RPR to SSO mode, this will force a reboot on standby supervisor. Router# configure terminal. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. Check if Auto-Boot is Enabled 6. Communications = Up. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Example: Router(config)# exit Example: Router # Enters redundancy configuration mode. Step 5. I Think that the righ status of SSO Configuration must be like: Hardware Mode = Duplex. Last switchover reason = none. 12. Step 5. 61 /24. Cisco Employee. SSO Dual-Route Processors and Cisco Nonstop Forwarding. 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. Step 6. This feature also functions in an nonstop forwarding (NSF) and stateful switchover (SSO) environment. Reason: Software version. 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. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :----- Active Location = slot 1/2 Current Software state = ACTIVE Uptime in current state = 36 minutes Image Version = Cisco IOS Software, s2t54 Software (s2t54-ADVENTERPRISEK9-M),SSO is supported in Cisco IOS Release 12. On the Cisco 8500 Series Catalyst Edge Platform, Stateful Switchover (SSO) can be used to enable a second IOS process. restart the Wireless controller in maintenance mode. 39. 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. Example: Device (config-red)# mode sso: Configures SSO. 3. 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 5. = 0 Last switchover reason = active unit removed Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. Usage Guidelines. Switchovers system experienced = 5. The New High Availability feature i. %HA-5-MODE:Operating mode is sso, configured mode is sso. Example: Device(config-red)# mode sso: Configures stateful switchover. 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. Redundancy may not work due to differences between the Cisco. On the standby. 2. 0. 2. Configures SSO. Router(config)# mode sso. 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. My routers only show redundancy mode as none. This mode utilizes two electrical grids, each one powering a half module within each power supply. The show redundancy and show issu state commands verify that redundancy mode is enabled and that SSO and NSF are configured. Complete these steps in order to check the redundancy status: a. Cisco IOS XE Bengaluru 17. 在本示例中，高可用性 (HA)状态切换 (SSO)配置在运行相同Cisco IOS软件版本的两个9800-CL实例之间，这些实例已配置有独立的WMI，且可在以下位置访问 GUI: 第一个地址为IP地址10. (Cisco Controller) >show redundancy summary Redundancy Mode = SSO ENABLED Local State = ACTIVE Peer State = UNKNOWN - Communication Down. 12. hw-switch switch 1 logging onboard message level 3. Router> enable. The processing of mirroring this information between route processors is known as checkpointing. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant 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 = Disabled Communications = Up Current. Configure redundancy with RMI + RP pairing. Figure 2. Step 5. Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Consolidated Platform Configuration Guide, Cisco IOS XE 3. SSO pair connected to upstream VSS pair with RP connected via the upstream set of switches in order to detect gateway down scenario. Check if Switches are in SSO Mode 5. Redundant System Information :----- Available system uptime = 44 weeks, 2 days, 6 hours, 12 minutes. Example: Device(config-red)# end: Exits redundancy configuration mode and. Step 1. Catalyst 4500 series switches allow a standby supervisor engine to take over if the active supervisor engine fails. 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. The Supervisor 7-E card has four uplink ports on its front panel. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. On primary controller, disable SSO using the command: Config redundancy mode disable The Active and Standby WLCs. Enter application redundancy mode. Maintenance Mode = Disabled. Redundancy may not work due to differences between the Cisco IOS releases. 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. 48. 6. 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.