Juniper BGP - CONFIGURATION GUIDE V 11.1.X

■ ATM with ATM Adaptation Layer 5 (AAL5) encapsulation
■ ATM with virtual channel connection (VCC) cell relay encapsulation
■ Ethernet (Fast Ethernet, Gigabit Ethernet, 10-Gigabit Ethernet, bridged Ethernet,
bridged Ethernet/VLAN, Ethernet/VLAN)
NOTE: For the purposes of configuring layer 2 services over MPLS, Ethernet interfaces
and bridged Ethernet interfaces function identically, as do Ethernet/VLAN interfaces
and bridged Ethernet/VLAN interfaces. For simplicity, the term Ethernet in this chapter
refers to both Ethernet interfaces and bridged Ethernet interfaces, and the term
Ethernet/VLAN interfaces refers to both Ethernet/VLAN interfaces and bridged
Ethernet/VLAN interfaces.
■ Frame Relay
■ HDLC
Figure 114 on page 510 illustrates layer 2 services being supported over an Internet
service provider’s MPLS network. Customers using Frame Relay, ATM, or other legacy
layer 2 connections to E Series routers are unaware that MPLS tunneling is used.
Figure 114: Layer 2 Services over a Provider’s MPLS Network
Layer 2 Services over MPLS Platform Considerations
To configure layer 2 services over MPLS, you must first configure the underlying
layer 2 service (ATM, bridged Ethernet, Fast Ethernet, Gigabit Ethernet, 10-Gigabit
Ethernet, Frame Relay, or HDLC) and MPLS.
Module Requirements
For information about the modules that support the underlying layer 2 service and
MPLS on ERX14xx models, ERX7xx models, and the ERX310 Broadband Services
Router:
■ See ERX Module Guide, Table 1, Module Combinations for detailed module
specifications.
■ See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support the underlying layer 2 service and MPLS.
For information about the modules that support the underlying layer 2 service and
MPLS on the E120 or E320 Broadband Services Router:
510 ■ Layer 2 Services over MPLS Platform Considerations
JUNOSe 11.1.x BGP and MPLS Configuration Guide