Few weeks ago i had asked help regarding the High Availablity in Cisco 4331 and recently i managed to sort it out with the help i got here. Here is the link to it:
It does the failover and failback well with NAT box to box High Availability. But as per the new requirement, i want high availability without having to write the same configurations on both the routers. If i write some changes in primary router, i want to be synced to the secondary router. I have seen this feature in many firewalls link Sonicwall, Fortigate and so on. I am not sure if it happens in cisco 4331 routers. I have confiugred the box-to-box high availability with redundancy mode as none and as per some cisco documents we could use mode SSO as well.Here is the link:
Is mode SSO my solution? The reason i need to sync 2 cisco routers is that i need to configure dual VPN between cisco 4331 and Cisco 4221. If i do box-to-box HA ,then i need to configure 4 vpn configurations in branch device and switchover becomes difficult when primary goes down. could any one suggest me regarding the syncing of cofigurations in two cisco 4331 rotuers?
My routers only show redundancy mode as none. There is no way i can change it to redundancy mode SSO.
Redundant System Information :
Available system uptime = 53 minutes
Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none
**Hardware Mode = Simplex Configured Redundancy Mode = Non-redundant Operating Redundancy Mode = Non-redundant Maintenance Mode = Disabled Communications = Down Reason: Failure**
Current Processor Information :
Active Location = slot 6 Current Software state = ACTIVE Uptime in current state = 53 minutes Image Version = Cisco IOS Software [Everest], ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.6.4, RELEASE S OFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2018 by Cisco Systems, Inc. Compiled Sun 08-Jul-18 04:33 by mcpre BOOT = bootflash:isr4300-universalk9.16.06.04.SPA.bin,1; Configuration register = 0x2102
Peer (slot: 7) information is not available because it is in 'DISABLED' state
After some study, i have come to this conclusion that i need the router to be in mode SSO and hardware mode should be Duplex instead of simplex.
Is there any way i can convert the redundancy mode to duplex and make the secondary router sync the information of Primary router?
Thank you for the help in advance.