3Com 3C8S5007 - SuperStack II PathBuilder S500..., User Manual

Page: 64 / 190

64 C
HAPTER
4: B
ASIC
C
ONFIGURATION OF
P
ORTS
, P
ATHS
,
AND
C
ONNECTORS
PPP over ATM can be configured to terminate at the router or configured
to support VPN tunnel switching.
To configure PPP over ATM to terminate at the router, follow these steps:
1 Configure the virtual circuit identifier (VCID) using:
ADD !<vport> -ATM PermVirCircuit <vcid> <vpi>.<vci> [ LLCSNAP | [
NULL IP | IPX | PPP ] ] [<shaperid>]
A PPP session is configured as one PVC on one virtual port. A PVC
requires the association of a unique virtual circuit identifier (VCID) to the
ATM service provider’s VPI.VCI. The PVC supports either LLCSNAP or
NULL PPP.
2 Configure the virtual port as PPPATM using:
ADD !<vport> -POrt VirtualPort <path> PPATM VCID <vcid>
The virtual port owner must be configured as PPPATM. The PVC
configured for the virtual port is bound to the virtual port. Data received
on the PVC will be tagged as received on the virtual port and passed to
PPP.
To configure PPP over ATM to support VPN tunnel switching, follow these
steps:
To configure PPP over ATM to support VPN tunnel switching, the virtual
path is configured (not the virtual port). The PPP over ATM virtual path is
bound to the tunnel switch virtual port when the VPN tunnel switch is set
up.
1 Configure the PVC to be used for the virtual path using:
ADD !<path> -ATM PermVirCircuit <vcid> <vpi>.<vci> CSNAP | [ NULL
IP | IPX | PPP ] ]
2 Configure the virtual path using:
ADD -PAth VirtualPath <path> PPATM VCID <vcid>
3 Complete the configuration of the tunnel client, tunnel switch, and
tunnel terminator.
Completing the configuration of the tunnel client, tunnel switch and
tunnel terminator requires the configuration of:
■
the VPN network. See Configuring Virtual Private Networks in Using
Enterprise OS Software .