Figure e-11 – Cisco OL-21636-01 User Manual

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Cisco IP Solution Center L2VPN and Carrier Ethernet User Guide, 6.0

OL-21636-01

Appendix E ISC Layer 2 VPN Concepts

VPLS Service Provisioning

Figure E-11

VPLS EWS Topology

The Ethernet Relay Service (ERS or EVP-LAN) offers the any-to-any connectivity characteristics of
EWS and the service multiplexing. This combination enables a single UNI to support a customer's
intranet connection and one or more additional EVCs for connection to outside networks, ISPs, or
content providers.

Figure E-12

illustrates an ERS (EVP-LAN) VPLS multipoint topology.

Figure E-12

VPLS ERS (EVP-LAN) Multipoint Topology

Ethernet Core

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192.168.11.25/24

192.168.11.1/24

192.168.11.11/24

192.168.11.2/24

192.168.11.12/24

.21

Service

Multiplexed UNI

.25

.11

Internet Access

Router

192.168.11.0/24

Internet

Security

Policy

192.168.11.1/24

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