Which redundancy protocol must be implemented for IPsec stateless failover to work? 01/29/2021 – by Mod_GuideK 0 Which redundancy protocol must be implemented for IPsec stateless failover to work? A. SSO B. GLBP C. HSRP D. VRRP SHOW ANSWERSCorrect Answer: C Explanation/Reference: Reference: https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/17826-ipsec-feat.html