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Basic Configuration at LNS 609
Create an L2TP Group To configure related parameters of L2TP, L2TP group should be added. The L2TP
group is used to configure the L2TP functions on the router and facilitate the
networking applications of one-to-one, one-to-multiple, multiple-to-one and
multiple-to-multiple connections between the LAC and LNS. L2TP group is
numbered separately on the LAC and the LNS. Hence, it is only necessary to keep
the corresponding relations between the related configurations of L2TP group at
LAC and LNS side (e.g., the peer end name of the tunnel originating L2TP
connection request and the LNS address).
After a L2TP group is created, other configurations related to this L2TP group,
such as local name, originating L2TP connection request and LNS address, can be
performed in L2TP group view. L2TP group1 works as the default L2TP group.
Perform the following configurations in system view.
Table 671 Create/Delete L2TP Group
Create a Virtual
Template
Virtual template is mainly used to configure working parameters of the virtual
interfaces dynamically created by the router in the process of operation, such as
configuring MP-bounding logic interface and L2TP logic interface.
Perform the following configurations in system view.
Table 672 Create/Delete a Virtual Template
By far, the virtual template in L2TP application only supports one peer but does not
support IP unnumbered, that is, the virtual template has to be configured with its
own IP address.
Dial-up users should only be allocated with negotiation IP addresses by LNS
dynamically, not be configured with fix addresses.
When using the ip pool command to configure the address allocated to the peer,
the user should ensure that the virtual template address and the address pool are
on the same segment.
Configure the Name of
the Receiving End of the
Tunnel
The LNS can receive the requests of establishing tunnels from different LACs using
different virtual templates. After a request of this is received, the LNS will check
whether the name of LAC is compliant with that of the legal remote end of the
tunnel first, then decide whether the tunnel will be created.
Perform the following configurations in L2TP group view.
Operation Command
Create a L2TP group l2tp-group group-number
Delete a L2TP group undo l2tp-group group-number
Operation Command
Create a virtual template interface virtual-template
virtual-template-number
Delete a virtual template undo interface virtual-template
virtual-template-number