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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-08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\u003eThis webpage provides documentation for the \u003ccode\u003eIPProtocolEnum\u003c/code\u003e within the \u003ccode\u003eGoogle.Cloud.Compute.V1\u003c/code\u003e namespace, specifically listing various versions of the library, ranging from 1.0.0 to the latest 3.6.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eIPProtocolEnum\u003c/code\u003e defines the valid IP protocols that a rule can apply to, including TCP, UDP, ESP, AH, SCTP, ICMP, and L3_DEFAULT, which may differ depending on the load balancing product in use.\u003c/p\u003e\n"],["\u003cp\u003eThe provided fields under the \u003ccode\u003eIPProtocolEnum\u003c/code\u003e are \u003ccode\u003eAh\u003c/code\u003e, \u003ccode\u003eEsp\u003c/code\u003e, \u003ccode\u003eIcmp\u003c/code\u003e, \u003ccode\u003eL3Default\u003c/code\u003e, \u003ccode\u003eSctp\u003c/code\u003e, \u003ccode\u003eTcp\u003c/code\u003e, \u003ccode\u003eUdp\u003c/code\u003e, and an additional \u003ccode\u003eUndefinedIPProtocolEnum\u003c/code\u003e field to indicate if the enum value is unset.\u003c/p\u003e\n"],["\u003cp\u003eThe full documentation for each version of the library are available for users to access through the provided links, with 3.6.0 being the latest.\u003c/p\u003e\n"],["\u003cp\u003eThe supported IP protocols, and their validity, are discussed in a Google Cloud document that can be found here: \u003ca href=\"https://cloud.google.com/load-balancing/docs/features#protocols_from_the_load_balancer_to_the_backends\"\u003eLoad balancing features\u003c/a\u003e.\u003c/p\u003e\n"]]],[],null,[]]
