R3303-HP HSR6800 Routers Layer 3 - IP Services Configuration Guide

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• The IPv6 address of the tunnel interface and the tunnel destination address configured on the tunnel
interface must be in different subnets.
Configuration prerequisites
Configure an IPv6 address for the interface (such as a VLAN interface, a GigabitEthernet interface, or a
Loopback interface) to be used as the source interface of the tunnel interface.
Configuration procedure
To configure a GRE over IPv6 tunnel:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enable the IPv6 packet
forwarding function.
ipv6 Disabled by default.
3. Create a tunnel interface and
enter tunnel interface view.
interface tunnel interface-number
By default, there is no tunnel
interface on a device.
4. Configure an IPv4 address for
the tunnel interface.
ip address ip-address { mask |
mask-length }
By default, no IPv4 address is
configured for a tunnel interface.
5. Set the tunnel mode to GRE
over IPv6.
tunnel-protocol gre ipv6
The default tunnel mode is GRE
over IPv4.
You must configure the same tunnel
mode on both ends of a tunnel.
Otherwise, packet delivery will
fail.
6. Configure the source address
or interface for the tunnel
interface.
source { ipv6-address |
interface-type interface-number }
By default, no source address or
interface is configured for a tunnel
interface.
7. Configure the destination
address for the tunnel
interface.
destination ipv6-address
By default, no destination address
is configured for a tunnel interface.
8. Set the maximum number of
encapsulations in the tunnel.
encapsulation-limit [ number ]
Optional.
4 by default.
9. Enable the GRE packet
checksum function.
gre checksum
Optional.
Disabled by default.
10. Configure the key for the GRE
tunnel interface.
gre key key-number
Optional.
By default, no key is configured for
a GRE tunnel interface.
The two ends of a tunnel must have
the same key or have no key at the
same time.
11. Specify a value for the
Recursion Control field in the
GRE header.
gre recursion recursion-value
Optional.
By default, the value of the
Recursion Control field in the GRE
header is 0.