Operation Manual – IPv6 ConfigurationH3C S7500E Series Ethernet Switches Chapter 3 Tunneling Configuration3-15Minimum = 0ms, Maximum = 13ms, Average = 3ms3.5 Configuring ISATAP Tunnel3.5.1 Configuration PrerequisitesIP addresses are configured for interfaces such as VLAN interface and loopbackinterface on the device. Such an interface can serve as the source interface of a tunnelto ensure that the tunnel destination address is reachable.3.5.2 Configuration ProcedureFollow these steps to configure an ISATAP tunnel:To do… Use the command… RemarksEnter system view system-view —Enable IPv6 ipv6RequiredBy default, the IPv6forwarding functionis disabled.Create a tunnel interface andenter tunnel interface viewinterface tunnelnumberRequiredBy default, there isno tunnel interfaceon the device.ipv6 address{ ipv6-addressprefix-length |ipv6-address/prefix-length }Configure anIPv6 globalunicastaddress orsite-localaddress ipv6 addressipv6-address/prefix-length eui-64Required.Use eithercommand.By default, no IPv6global unicastaddress isconfigured for thetunnel interface.ipv6 address autolink-localConfigure anIPv6 addressfor the tunnelinterfaceConfigure anIPv6 link-localaddress ipv6 addressipv6-address link-localOptionalBy default, alink-local addresswill automatically begenerated when anIPv6 global unicastaddress or link-localaddress isconfigured.Disable the RA messagesuppression undo ipv6 nd ra halt RequiredEnabled by default.