R211x-HP Flexfabric 11900 Layer 3 - IP Services Command Reference

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GRE commands
keepalive
Use keepalive to enable the GRE keepalive function, and set the keepalive interval and the keepalive
number.
Use undo keepalive to disable the keepalive function.
Syntax
keepalive [ interval [ times ] ]
undo keepalive
Default
The GRE keepalive function is disabled.
Views
Tunnel interface view
Predefined user roles
network-admin
mdc-admin
Parameters
interval: Specifies the keepalive interval in the range of 1 to 32767 seconds. The default value is 10.
times: Specifies the keepalive number in the range of 1 to 255. The default value is 3.
Usage guidelines
This command enables the tunnel interface to send keepalive packets at the specified interval. If the
device receives no response from the peer within the timeout time, the device shuts down the local tunnel
interface until it receives a keepalive acknowledgement packet from the peer. The timeout time is the
result of multiplying the keepalive interval by the keepalive number.
Regardless of whether GRE keepalive is enabled, the device always acknowledges keepalive packets it
receives.
Examples
# Enable GRE keepalive, set the keepalive interval to 20 seconds, and set the keepalive number to 5.
<Sysname> system-view
[Sysname] interface tunnel 2 mode gre
[Sysname-Tunnel2] keepalive 20 5