323
Step Command Remarks
4. Configure a source
address or source
interface for the tunnel
interface.
source
{ ip-address |
interface-type interface-number }
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.
5. Configure a destination
address for the tunnel
interface.
destination
ip-address
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.
6. (Optional.) Enable GRE
keepalive, and set the
keepalive interval and
keepalive number.
keepalive
[ interval [ times ] ]
By default, GRE keepalive is disabled.
7. (Optional.) Enable GRE
checksum.
gre checksum
By default, GRE checksum is disabled.
8. (Optional.) Configure a
GRE key for the GRE
tunnel interface.
gre key
key-number
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.
9. (Optional.) Set the DF
bit for encapsulated
packets.
tunnel dfbit enable
By default, the DF bit is not set, allowing
encapsulated packets to be
fragmented.
10. Return to system view.
quit
N/A
11. (Optional.) Configure
the device to discard
IPv6 packets with
IPv4-compatible IPv6
addresses.
tunnel discard
ipv4-compatible-packet
By default, the device does not discard
such IPv6 packets.
Configuring a GRE/IPv6 tunnel
Perform this task to configure a GRE tunnel on an IPv6 network.
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