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Configuring basic L2TP capabilities
Basic L2TP capability configuration includes the following tasks:
•
Enabling
L2TP
—L2TP must be enabled for L2TP configurations to take effect.
•
Creating an L2TP group
—An L2TP group is intended to represent a group of parameters.
This enables not only flexible L2TP configuration on devices, but also one-to-one and
one-to-many networking applications for LACs and LNSs. An L2TP group has local significance
only. However, the relevant settings of the L2TP groups on the LAC and LNS must match. For
example, the local tunnel name configured on the LAC must match the tunnel peer name
configured on the LNS.
•
Configuring the local tunnel name
—The local tunnel name identifies the tunnel at the local
end during tunnel negotiation between an LAC and an LNS.
To configure basic L2TP capabilities:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enable L2TP.
l2tp enable
By default, L2TP is disabled.
3.
Create an L2TP group,
specify its mode, and enter
its view.
l2tp-group
group-number
mode
{
lac
|
lns
}
By default, no L2TP group exists.
Specify the mode as
lac
on the
LAC side and as
lns
on the LNS
side.
4.
Specify the local tunnel
name.
tunnel name
name
Optional.
By default, the device name is
used.
Configuring an LAC
An LAC establishes tunnels with LNSs and forwards packets between LNSs and remote systems.
Configuring an LAC to initiate tunneling requests for a user
This task configures an LAC to initiate tunneling requests to an LNS for a user. When the PPP user
information matches the specified user, the LAC determines that the PPP user is an L2TP user and
initiates tunneling requests to the LNS.
You can specify a user by configuring one of the following items:
•
Fully qualified name
—The LAC initiates tunneling requests to the LNS only if the username of
a PPP user matches the configured fully qualified name.
•
Domain
name
—The LAC initiates tunneling requests to the LNS only if the ISP domain name
of a PPP user matches the configured domain name.
To configure an LAC to initiate tunneling requests for a user:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter L2TP group view in
LAC mode.
l2tp-group
group-number
[
mode
lac
]
N/A
