To modify their pseudowires, the peer routers correct their MPLS forwarding tables and
set up new entries in their pseudowire tables.
VPWS Supported Features
The JunosE Software implementation of VPWS provides the following features:
•
Support for the following types of network interfaces between the PE router and the
CE device:
•
ATM with ATM Adaptation Layer 5 (AAL5) encapsulation
•
ATM with virtual channel connection (VCC) cell relay encapsulation
•
Cisco HDLC
•
Ethernet (Fast Ethernet, Gigabit Ethernet, 10-Gigabit Ethernet, Ethernet/VLAN)
•
Frame Relay
•
PPP
•
Autodiscovery of L2VPN instance members using MP-BGP
•
L2VPN signaling using MP-BGP to set up and tear down the pseudowires that constitute
an L2VPN instance
•
Multihoming
•
Inter-AS option A, inter-AS option B, and inter-AS option C services
As with VPLS, VPWS does not support BGP multipaths.
VPWS Platform Considerations
VPWS is supported on all E Series routers:
•
Module Requirements on page 649
•
Interface Specifiers on page 650
Module Requirements
You can configure VPWS on all E Series module combinations that support MPLS tunnels.
For information about the modules that support VPWS on ERX14xx models, ERX7xx
models, and ERX310 Broadband Services Router:
•
See ERX Module Guide, Chapter 1, Module Combinations for detailed module
specifications.
•
See ERX Module Guide, Appendix A, Module Protocol Support for information about the
modules that support VPWS.
For information about the modules that support VPWS on E120 and E320 Broadband
Services Routers:
649Copyright © 2010, Juniper Networks, Inc.
Chapter 14: VPWS Overview
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