Configuration procedure

1. Enter system view.

system-view

N/A

2. Enable IPv6.

ipv6

By default, the IPv6 forwarding function is disabled.

3. Enter tunnel interface view.

interface tunnel number

N/A

4. Configure an IPv6 address for the tunnel interface.

• Configure an IPv6 global unicast address or site-local address:

  • ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }

  • ipv6 address ipv6-address/prefix-length eui-64

• Configure an IPv6 link-local address:

  • ipv6 address auto link-local

  • ipv6 address ipv6-address link-local

The IPv6 link-local address configuration is optional.

By default:

• No IPv6 global unicast address is configured for the tunnel interface.

• A link-local address will automatically be generated when an IPv6 global unicast address or link-local address is configured.

5. Specify the ISATAP tunnel mode.

tunnel-protocol ipv6-ipv4 isatap

GRE over IPv4 tunnel by default.

The same tunnel mode should be configured at both ends of the tunnel. Otherwise, packet delivery will fail.

6. Configure a source address or interface for the tunnel.

source { ip-address | interface-type interface-number }

By default, no source address or interface is configured for the tunnel.

7. Return to system view.

quit

N/A

8. Enable dropping of IPv6 packets using IPv4-compatible IPv6 addresses.

tunnel discard ipv4-compatible-packet

Optional.

Disabled by default.