A question-regarding to redundancy protocol (or VRRP).
A. VRRP uses UDP port number something (or IP protocol 112)
B. VRRP uses TCP IP protocol 20
C. VRRP uses UDP protocol 200
D. An IP protocol does not exist
A question-regarding to redundancy protocol (or VRRP).
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-mt/fhp-15-mt-book/fhp-vrrp.html
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VRRP uses a dedicated Internet Assigned Numbers Authority (IANA) standard multicast address (224.0.0.18) for VRRP advertisements. This addressing scheme minimizes the number of routers that must service the multicasts and allows test equipment to accurately identify VRRP packets on a segment. The IANA assigned VRRP the IP protocol number 112.