Setting The Hello Interval; Enabling Session Flow Control - HP VSR1000 Layer 2 - Wan Access Configuration Manual

Step
1. Enter system view.
2. Enter L2TP group view.
3. Enable L2TP tunnel
authentication.
4. Configure the tunnel
authentication key.

Setting the Hello interval

To check the connectivity of a tunnel, the LAC and LNS periodically send each other Hello packets. On
receipt of a Hello packet, the LAC or LNS returns a response packet. If the LAC or LNS receives no
response packets from the peer within a specific period of time (the Hello interval), it retransmits the Hello
packet. If it receives no response packets from the peer after transmitting the Hello packet five times, it
considers the L2TP tunnel to be down.
To set the Hello interval:
Step
1. Enter system view.
2. Enter L2TP group view.
3. Set the Hello interval.

Enabling session flow control

The L2TP session flow control function adds sequence numbers to transmitted packets, and uses them to
reorder packets arriving out of order and to detect lost packets.
This function takes effect on both sent and received L2TP data messages. The L2TP sessions support this
function if either the LAC or LNS is enabled with this function.
To enable session flow control:
Step
1. Enter system view.
2. Enter L2TP group view.
3. Enable the session flow
control function.
Command
system-view
l2tp-group group-number [ mode { lac
| lns } ]
tunnel authentication
tunnel password { cipher | simple }
password
Command
system-view
l2tp-group group-number [ mode { lac
| lns } ]
tunnel timer hello hello-interval
Command
system-view
l2tp-group group-number [ mode { lac
| lns } ]
tunnel flow-control
23
Remarks
N/A
N/A
Enabled by default.
By default, no key is configured.
Remarks
N/A
N/A
The default setting is 60 seconds.
Remarks
N/A
N/A
By default, this function is
disabled.