The IP protocol to which this rule applies. For protocol forwarding, valid options are TCP, UDP, ESP, AH, SCTP, ICMP and L3_DEFAULT. The valid IP protocols are different for different load balancing products as described in Load balancing features.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eIPProtocolEnum\u003c/code\u003e is 3.6.0, which is part of the \u003ccode\u003eGoogle.Cloud.Compute.V1\u003c/code\u003e namespace within the .NET environment.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eIPProtocolEnum\u003c/code\u003e is used to specify the IP protocol for a forwarding rule, with valid options including TCP, UDP, ESP, AH, SCTP, ICMP, and L3_DEFAULT.\u003c/p\u003e\n"],["\u003cp\u003eThis \u003ccode\u003eIPProtocolEnum\u003c/code\u003e allows you to define the different protocols that a load balancer can forward to backends, each varying from load balancer to load balancer.\u003c/p\u003e\n"],["\u003cp\u003eVersion history for \u003ccode\u003eIPProtocolEnum\u003c/code\u003e is available for versions ranging from 1.0.0 up to the current version of 3.6.0.\u003c/p\u003e\n"],["\u003cp\u003eThe field can have the values \u003ccode\u003eAh\u003c/code\u003e, \u003ccode\u003eEsp\u003c/code\u003e, \u003ccode\u003eIcmp\u003c/code\u003e, \u003ccode\u003eSctp\u003c/code\u003e, \u003ccode\u003eTcp\u003c/code\u003e, \u003ccode\u003eUdp\u003c/code\u003e, or \u003ccode\u003eUndefinedIPProtocolEnum\u003c/code\u003e, each representing a different type of IP protocol or no protocol being set.\u003c/p\u003e\n"]]],[],null,[]]
