300-610 · Question #192
The data center aggregation layer that uses IPv4 and IPv6 address space must act as a redundant Layer 3 gateway. The solution must support a minimum of 240 virtual groups for an interface. The data…
The correct answer is B. VRRPV3. VRRPv3 is the First Hop Redundancy Protocol (FHRP) solution that meets the requirements for a redundant Layer 3 gateway in a multi-vendor data center aggregation layer, supporting both IPv4 and IPv6 with a large number of virtual groups.
Question
The data center aggregation layer that uses IPv4 and IPv6 address space must act as a redundant Layer 3 gateway. The solution must support a minimum of 240 virtual groups for an interface. The data center aggregation layer hosts network devices from different vendors. Which FHRP solution meets these requirements?
Options
- AHSRPv1
- BVRRPV3
- CVRRPv1
- DHSRPv2
How the community answered
(23 responses)- A4% (1)
- B91% (21)
- D4% (1)
Why each option
VRRPv3 is the First Hop Redundancy Protocol (FHRP) solution that meets the requirements for a redundant Layer 3 gateway in a multi-vendor data center aggregation layer, supporting both IPv4 and IPv6 with a large number of virtual groups.
HSRPv1 is a Cisco proprietary protocol and only supports IPv4, failing to meet the multi-vendor and IPv6 requirements.
VRRPv3 supports both IPv4 and IPv6 addressing, making it suitable for dual-stack environments, and is an open standard, allowing interoperability between different vendor devices. VRRPv3 also supports a large range of virtual router IDs (255+), easily exceeding the requirement of 240 virtual groups.
VRRPv1 is an open standard and supports IPv4, but it does not support IPv6 and its group ID range is limited to 255 for IPv4, making it unsuitable for the IPv6 and large virtual group requirements.
HSRPv2 is a Cisco proprietary protocol that supports both IPv4 and IPv6, but it still fails the multi-vendor requirement due to its proprietary nature.
Concept tested: FHRP selection (VRRPv3) for multi-vendor, dual-stack
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/xe-3s/fhrp-xe-3s-book/fhrp-vrrp.html
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