R3721-F3210-F3171-HP High-End Firewalls VPN Command Reference-6PW101

2
gre checksum
Syntax
gre checksum
undo gre checksum
View
Tunnel interface view
Default level
2: System level
Parameters
None
Description
Use gre checksum to enable the GRE packet checksum function so as to verify the validity of packets and
discard those invalid.
Use undo gre checksum to disable the GRE packet checksum function.
By default, the GRE packet checksum function is disabled.
Related commands: interface tunnel and display interface tunnel.
Examples
# Enable the GRE packet checksum function for the tunnel between firewall Sysname1 and firewall
Sysname2.
// Enable the GRE packet checksum function on firewall Sysname1.
<Sysname1> system-view
[Sysname1] interface tunnel 3
[Sysname1-Tunnel3] gre checksum
// Enable the GRE packet checksum function on firewall Sysname2.
<Sysname2> system-view
[Sysname2] interface tunnel 2
[Sysname2-Tunnel2] gre checksum
gre key
Syntax
gre key key-number
undo gre key
View
Tunnel interface view
Default level
2: System level
Parameters
key-number: Key for the GRE tunnel interface, in the range of 0 to 4,294,967,295.