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{
Specify the PPP authentication method for the PPP user.
{
Configure the username and password of the PPP user.
The LNS then authenticates the PPP user. For more information, see "
."
•
Trigger the LAC to automatically establish an L2TP tunnel.
To configure an LAC to automatically establish an L2TP tunnel:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Create a virtual PPP interface
and enter its view.
interface virtual-ppp
interface-number
By default, no virtual PPP
interface exists.
3.
Configure the IP address of the
virtual PPP interface.
•
Assign an IP address to the
virtual PPP interface.
ip address
address
mask
•
Enable IP address
negotiation on the virtual
PPP interface.
ip address ppp-negotiate
By default, no IP address is
configured.
4.
Configure the peer to be
authenticated.
." N/A
5.
Configure the LAC to
automatically establish an
L2TP tunnel with the LNS.
l2tp-auto-client l2tp-group
group-number
By default, an LAC does not
establish an L2TP tunnel.
An L2TP tunnel automatically
established in LAC-auto-initiated
mode exists until you remove the
tunnel by using the
undo
l2tp-auto-client
or
undo
l2tp-group
group-number
command.
6.
(Optional.) Set the description
for the interface.
description
text
By default, the description of an
interface is in the format of
interface-name
Interface
, for
example,
Virtual-PPP254
Interface
.
7.
Set the MTU size of the
interface.
mtu
size
The default setting is 1500 bytes.
8.
(Optional.) Set the keepalive
interval.
timer-hold
seconds
The default setting is 10 seconds.
9.
(Optional.) Set the keepalive
retry limit.
timer-hold retry retries
The default setting is 5.
10.
(Optional.) Set the expected
bandwidth for the interface.
bandwidth bandwidth-value
By default, the expected
bandwidth (in kbps) is interface
baudrate divided by 1000.
11.
(Optional.) Restore the default
settings for the interface.
default
N/A
12.
(Optional.) Bring up the
interface.
undo shutdown
By default, an interface is up.
Configuring an LNS
An LNS responds to the tunneling requests from an LAC, authenticates users, and assigns IP
addresses to users.
