3Com MSR 50 Series Configuration Manual page 1595

To do...
Create a tunnel interface and
enter tunnel interface view
Configure an IPv4 address for
the tunnel interface
Set the tunnel mode to GRE
over IPv6
Configure the source address
or interface for the tunnel
interface
Configure the destination
address for the tunnel
interface
Enable the GRE packet
checksum function
Configure the key for the GRE
tunnel interface
Configure a route through the
tunnel
Set the MTU value for the
tunnel interface sending IPv6
packets
Note that:
For the configuration of IPv6 MTU value, refer to the ipv6 mtu command in
■
"IPv6 Basics Configuration" on page
The source address and destination address of a tunnel uniquely identify a
■
path. They must be configured at both ends of the tunnel and are mutually the
source address and the destination address.
Two or more tunnel interfaces using the same encapsulation protocol must
■
have different source addresses and destination addresses.
If you configure a source interface for a tunnel interface, the source address of
■
the tunnel interface is the primary IP address of the source interface.
Configuring a GRE over IPv6 Tunnel
Use the command...
interface tunnel
interface-number
ip address ip-address { mask |
mask-length }
tunnel-protocol gre ipv6
source { ipv6-address |
interface-type interface-num }
destination ipv6-address
gre checksum
gre key key-number
Refer to "IPv6 Multicast
Routing and Forwarding
Configuration" on page
1209.
ipv6 mtu mtu-size
655.
1595
Remarks
Required
By default, there is no tunnel
interface on a device.
Required
By default, no IPv4 address is
configured for a tunnel
interface.
Required
GRE over IPv4 by default
Note that both ends of a
tunnel must be configured
with the same tunnel mode.
Otherwise, packet delivery will
fail.
Required
By default, no source address
or interface is configured for a
tunnel interface.
Required
By default, no destination
address is configured for a
tunnel interface.
Optional
Disabled by default
Optional
By default, no key is
configured for a GRE tunnel
interface.
The two ends of a tunnel
must have the same key
configuration.
Optional
Each end of the tunnel must
have a route (static or
dynamic) through the tunnel
to the other end.
Optional