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350-401 · Question #122

Which two statements about VRRP are true? (Choose two.)

The correct answer is B. The TTL for VRRP packets must be 255. E. Three versions of the VRRP protocol have been defined.. VRRP packets are sent with a maximum Time-to-Live (TTL) value to confine them to the local subnet, and the VRRP protocol has evolved through three versions.

Submitted by anjalisingh· Mar 6, 2026Network Infrastructure

Question

Which two statements about VRRP are true? (Choose two.)

Options

  • AIt is assigned multicast address 224.0.0.8.
  • BThe TTL for VRRP packets must be 255.
  • CIt is assigned multicast address 224.0.0.9.
  • DIts IP protocol number is 115.
  • EThree versions of the VRRP protocol have been defined.
  • FIt supports both MD5 and SHA1 authentication.

How the community answered

(39 responses)
  • A
    3% (1)
  • B
    95% (37)
  • C
    3% (1)

Why each option

VRRP packets are sent with a maximum Time-to-Live (TTL) value to confine them to the local subnet, and the VRRP protocol has evolved through three versions.

AIt is assigned multicast address 224.0.0.8.

VRRPv2 uses the multicast address 224.0.0.18 for advertisements, not 224.0.0.8.

BThe TTL for VRRP packets must be 255.Correct

VRRP packets are sent with a Time-to-Live (TTL) value of 255 to ensure they are not forwarded by routers and remain within the local network segment. This design prevents routing loops and guarantees that only directly connected devices process VRRP messages for master election and status updates.

CIt is assigned multicast address 224.0.0.9.

VRRPv2 uses the multicast address 224.0.0.18 for advertisements, not 224.0.0.9.

DIts IP protocol number is 115.

VRRP uses IP protocol number 112, not 115, for its encapsulated messages.

EThree versions of the VRRP protocol have been defined.Correct

The VRRP protocol has been defined in three main versions: VRRPv1 (obsolete), VRRPv2 (RFC 3768) which supports IPv4, and VRRPv3 (RFC 5798) which supports both IPv4 and IPv6. Each version introduced enhancements and expanded support for different IP addressing schemes.

FIt supports both MD5 and SHA1 authentication.

VRRPv2 supports plain text and MD5 authentication, while VRRPv3 relies on external security mechanisms like IPsec and does not inherently support SHA1 within the protocol itself.

Concept tested: VRRP protocol characteristics and versions

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/xe-16/fhrp-xe-16-book/fhrp-vrrp.html

Topics

#VRRP protocol#First Hop Redundancy Protocols

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