HPE FlexNetwork HSR6800 Configuration Manual page 327

Step
4. Configure a source address
or source interface for the
tunnel interface.
5. Configure a destination
address for the tunnel
interface.
6. (Optional.) Enable GRE
keepalive, and set the
keepalive interval and
keepalive number.
7. (Optional.) Enable GRE
checksum.
8. (Optional.) Configure a GRE
key for the GRE tunnel
interface.
9. (Optional.) Set the DF bit for
encapsulated packets.
10. Return to system view.
11. (Optional.) Configure the
device to discard IPv6
packets with
IPv4-compatible IPv6
addresses.
For more information about the interface tunnel, source, destination, tunnel dfbit enable, and
tunnel discard ipv4-compatible-packet commands and additional configuration commands on a
tunnel interface, see tunnel configuration and commands in Layer 3—IP Services Configuration
Guide and Layer 3—IP Services Command Reference.
Command
source { ip-address |
interface-type interface-number }
destination ip-address
keepalive [ interval [ times ] ]
gre checksum
gre key key
tunnel dfbit enable
quit
tunnel discard
ipv4-compatible-packet
314
Remarks
By default, no source address or
interface is configured for a tunnel
interface.
If you configure a source address
for a tunnel interface, the tunnel
interface uses the source address
as the source address of the
encapsulated packets.
If you configure a source interface
for a tunnel interface, the tunnel
interface uses the primary IP
address of the source interface as
the source address of the
encapsulated packets.
By default, no destination address
is configured for a tunnel
interface.
The destination address is the
address of the physical interface
that the tunnel remote end uses to
receive packets from the GRE
tunnel.
The tunnel local end uses this
address as the destination
address of the encapsulated
packets.
By default, GRE keepalive is
disabled.
By default, GRE checksum is
disabled.
By default, no GRE key is
configured for a GRE tunnel
interface.
The two ends of a GRE tunnel
must have the same key or both
have no key.
By default, the DF bit is not set,
allowing encapsulated packets to
be fragmented.
N/A
By default, the device does not
discard such IPv6 packets.