Match each network high-availability technology or protocol to its primary operational role and implementation context.
- Link Aggregation Control Protocol (LACP)Bundles multiple physical switch ports into a single logical trunk to provide Layer 2 bandwidth aggregation and link-level fault tolerance.
- Virtual Router Redundancy Protocol (VRRP)An open-standard FHRP that allows a group of routers to share a single Virtual IP (VIP) address for default gateway redundancy.
- Common Address Redundancy Protocol (CARP)A BSD-derived protocol that allows multiple firewall nodes on a segment to share IP addresses and state for failover.
- Multipath I/O (MPIO)Configures multiple physical Fibre Channel or iSCSI paths between host HBAs and SAN storage controllers to eliminate single storage path failures.
Answer
Link Aggregation Control Protocol (LACP) matches with bundling multiple physical switch ports into a single logical trunk; Virtual Router Redundancy Protocol (VRRP) matches with an open-standard FHRP sharing a Virtual IP for gateway redundancy; Common Address Redundancy Protocol (CARP) matches with a BSD-derived protocol sharing IP addresses across firewall nodes; Multipath I/O (MPIO) matches with configuring multiple physical paths between host HBAs and SAN storage.
Each technology targets a distinct layer of redundancy: LACP handles Layer 2 physical interface aggregation, VRRP provides open-standard default gateway router IP redundancy, CARP provides BSD-based stateful firewall interface failover, and MPIO handles host-to-SAN storage controller path failover.
Step-by-Step Solution
Key Concept
High Availability and Redundancy Concepts