Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [V] [W] [X] HA (High Availability) geographic HA DMVPNs, IPsec+GRe, RRI with multiple IPsec peers, in RAVPNs concentrator redundancy with multiple peers, 2nd DNS-based load balancing, HSRP, VCA, VRRP, 2nd 3rd load-balanced designs concentrator clustering, DNS server load balancing, external load balancers, load sharing with peer statements, routing, peer availability on-demand DPD, SSO stateful HA alternatives to, failover process, stateless HA alternatives to, failover process, tunnel termination redundancy on HSRP/VRRP virtual interfaces, using RP-based IPsec HA, with multiple peer statements, handshake process (SSL VPNs), hardware-based VPN clients, hashes, Hellman, Martin, HMAC (hashed message authentication codes), 2nd home gateways, HSRP (Hot Standby Routing Protocol), RAVPN concentrator HA timers, tuning HSRP/VRRP virtual interfaces, tunnel termination point HA, hub-and-spoke IPsec model, clustered spoke design site-to-site VPNs |