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Configuration guidelines ··································································································· 203
Configuration procedure ··································································································· 203
Configuration example ······································································································ 204
Displaying and maintaining tunneling configuration ······································································· 207
Troubleshooting tunneling configuration ······················································································ 208
Symptom ······················································································································· 208
Solution ························································································································· 208
Configuring GRE ·········································································· 209
Overview ······························································································································ 209
GRE encapsulation format ································································································ 209
GRE encapsulation and de-encapsulation processes ······························································ 210
Protocols and standards ··································································································· 210
Configuring a GRE over IPv4 tunnel ··························································································· 211
Configuration prerequisites ································································································ 211
Configuration guidelines ··································································································· 211
Configuration procedure ··································································································· 211
Configuring a GRE over IPv6 tunnel ··························································································· 212
Configuration prerequisites ································································································ 212
Configuration guidelines ··································································································· 212
Configuration procedure ··································································································· 213
GRE over IPv4 tunnel configuration example ··············································································· 214
GRE over IPv6 tunnel configuration example ··············································································· 217
Document conventions and icons ···················································· 222
Conventions ························································································································· 222
Network topology icons ··········································································································· 223
Support and other resources ·························································· 224
Accessing Hewlett Packard Enterprise Support ············································································ 224
Accessing updates ················································································································· 224
Websites ······················································································································· 225
Customer self repair ········································································································· 225
Remote support ·············································································································· 225
Documentation feedback ·································································································· 225
Index ························································································· 227
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Table of Contents
Troubleshooting
