D-Link DGS-6600-48TS Configuration Guide - Page 369

VPWS Configuration Commands, MPLS ip

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Volume 5-Multiprotocol Label Switching / Chapter 34-Virtual Private Wire Service (VPWS) Figure 34-1 MPLS-based VPWS VPWS Configuration Commands In above figure, MPLS network is the packet switched network (PSN). Each customer edge device (CE) is connected to the provider edge (PE) via an attachment circuit (AC). The PE does a one-toone mapping between the pseudo wire (PW) and AC based on local information. A PW is an emulated point-to-point connection over a packet switched network that allows the interconnection of two nodes with any L2 technology. The required functions of PWs include encapsulating service-specific bit streams, cells, or PDUs arriving at an ingress port and carrying them across an IP path or MPLS tunnel [4]. PWs provide the following functions in order to emulate the behavior and characteristics of the native service. 1.Encapsulation of service-specific PDUs or circuit data arriving at the PE-bound port (logical or physical). 2.Carriage of the encapsulated data across a PSN tunnel. 3.Establishment of the PW, including the exchange and/or distribution of the PW identifiers used by the PSN tunnel endpoints. 4.Managing the signaling, timing, order, or other aspects of the service at the boundaries of the PW. Service-specific status and alarm management. One or more PWs are carried in a MPLS tunnel from one PE to another. Any given frame travels first on its ingress AC, then on a PW, and then on its egress AC. A particular combination of forms a virtual circuit between two CE devices. NOTICE: If one port joins a MPLS L2VPN, it is supposed that all traffic to this port should be transparently sent on MPLS L2VPN. The user should not configure an IP interface in this port. If IP interface is configured, it should be a configuration error. VPWS Configuration Commands MPLS ip Command mpls ip Explanation Use mpls ip command in global configuration mode to enable the MPLS to forward globally. This example shows how to enable MPLS globally. DGS6600(config)#mpls ip DGS-6600 Configuration Guide 369

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Volume 5-Multiprotocol Label Switching / Chapter 34-Virtual Private Wire Service (VPWS)
VPWS Configuration Commands
DGS-6600 Configuration Guide
369
Figure 34-1 MPLS-based VPWS
In above figure, MPLS network is the packet switched network (PSN). Each customer edge device
(CE) is connected to the provider edge (PE) via an attachment circuit (AC). The PE does a one-to-
one mapping between the pseudo wire (PW) and AC based on local information. A PW is an
emulated point-to-point connection over a packet switched network that allows the interconnection
of two nodes with any L2 technology.
The required functions of PWs include encapsulating service-specific bit streams, cells, or PDUs
arriving at an ingress port and carrying them across an IP path or MPLS tunnel [4].
PWs provide the following functions in order to emulate the behavior and characteristics of the
native service.
1.Encapsulation of service-specific PDUs or circuit data arriving at the PE-bound port (logical or
physical).
2.Carriage of the encapsulated data across a PSN tunnel.
3.Establishment of the PW, including the exchange and/or distribution of the PW identifiers used by
the PSN tunnel endpoints.
4.Managing the signaling, timing, order, or other aspects of the service at the boundaries of the PW.
Service-specific status and alarm management.
One or more PWs are carried in a MPLS tunnel from one PE to another. Any given frame travels first
on its ingress AC, then on a PW, and then on its egress AC. A particular combination of <AC, PW,
AC> forms a virtual circuit between two CE devices.
NOTICE:
If one port joins a MPLS L2VPN, it is supposed that all traffic to this port should be transparently sent on
MPLS L2VPN. The user should not configure an IP interface in this port. If IP interface is configured, it should be a
configuration error.
VPWS Configuration Commands
MPLS ip
This example shows how to enable MPLS globally.
Command
Explanation
mpls ip
Use mpls ip command in global configuration mode
to enable the MPLS to forward globally.
DGS6600(config)#mpls ip