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Zorluk: KolayHigh Availability and Redundancy Concepts

A network administrator is configuring Virtual Router Redundancy Protocol (VRRP) across two routers to provide first-hop redundancy for a local subnet. To ensure that end-user workstations seamlessly switch traffic to the standby router in the event of a primary router failure, which IP address should be configured as the default gateway on the workstations?

  1. The shared Virtual IP (VIP) address assigned to the VRRP redundancy groupCevap
  2. B
    The physical IP address assigned to the primary router's LAN interface
  3. C
    The physical IP address assigned to the secondary router's LAN interface
  4. D
    The loopback interface IP address of the primary Spanning Tree Protocol (STP) root switch

Cevap

The shared Virtual IP (VIP) address assigned to the VRRP redundancy group should be configured as the default gateway on client workstations.
Configuring the shared Virtual IP (VIP) address as the default gateway ensures that host devices send outbound packets to the virtual router instance. When the primary router fails, the backup router automatically assumes control of the Virtual IP address, maintaining uninterrupted network communication for hosts.

Adım Adım Çözüm

1
Identify the purpose of First Hop Redundancy Protocols (FHRP) such as VRRP.
FHRP protocols present multiple physical routers as a single logical router sharing a Virtual IP (VIP) address and Virtual MAC address.
This logical representation allows hosts to maintain a constant gateway target regardless of which physical router is actively forwarding traffic.
2
Determine the correct workstation gateway assignment.
Workstations must be configured with the shared Virtual IP address as their default gateway.
If the active router fails, the VRRP master role transitions to the backup router, which assumes responsibility for answering ARP requests for the Virtual IP address without requiring host configuration changes.

Anahtar Kavram

Virtual Router Redundancy Protocol (VRRP) Virtual IP Configuration
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High Availability and Redundancy Concepts

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