Gre Key - H3C MSR 20-20 Command Reference Manual

Parameter
Description
Related command:
Example

gre key

Syntax
View
Parameter
Description
Related command:
Example
None
Use the
gre checksum
so as to verify the validity of packets and discard those invalid packets.
Use the
undo gre checksum
function.
By default, the GRE packet checksum function is disabled.
interface tunnel.
# Enable the GRE packet checksum function on the tunnel between Sysname1
and Sysname2.
<Sysname1> system-view
[Sysname1] interface tunnel 3
[Sysname1-Tunnel3] gre checksum
<Sysname2> system-view
[Sysname2] interface tunnel 2
[Sysname2-Tunnel2] gre checksum
gre key key-number
undo gre key
Tunnel interface view
key-number: Secret key for the GRE tunnel interface use, in the range 0 to
4,294,967,295.
Use the command to configure a secret key for a GRE tunnel interface.
gre key
This weak security mechanism can prevent packets from being received
mistakenly.
Use the
undo gre key
By default, no secret key is configured for a GRE tunnel interface.
interface tunnel
# Set the secret key for the GRE tunnel interfaces to 123 on Sysname1 and
Sysname2.
<Sysname1> system-view
[Sysname1] interface tunnel 3
[Sysname1-Tunnel3] gre key 123
<Sysname2> system-view
[Sysname2] interface tunnel 2
[Sysname2-Tunnel2] gre key 123
command to enable the GRE packet checksum function
command to disable the GRE packet checksum
command to remove the configuration.
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