Which redundancy protocol must be implemented for IPsec stateless failover to work?
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A. B. C. D.C.
https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/17826-ipsec-feat.htmlThe redundancy protocol that must be implemented for IPsec stateless failover to work is VRRP (Virtual Router Redundancy Protocol).
VRRP is a protocol that enables multiple routers to share a virtual IP address and act as a single virtual router. This allows for redundancy and failover in the network. In the case of IPsec stateless failover, VRRP is used to provide redundancy for the VPN gateway.
Stateless failover is a technique used to maintain IPsec VPN connections even if one of the VPN gateways fails. When a VPN gateway fails, the traffic is automatically rerouted to the backup gateway. However, for this to work seamlessly, the backup gateway must have the same virtual IP address as the primary gateway. This is where VRRP comes in.
By implementing VRRP, the primary and backup VPN gateways can share the same virtual IP address. When the primary gateway fails, the backup gateway takes over the virtual IP address and continues to receive VPN traffic seamlessly.
Therefore, VRRP is the redundancy protocol that must be implemented for IPsec stateless failover to work. SSO (Stateful Switchover), GLBP (Gateway Load Balancing Protocol), and HSRP (Hot Standby Router Protocol) are other redundancy protocols that are commonly used in networks, but they do not provide the necessary support for IPsec stateless failover.