Cisco OL-21636-01 - Manual (Page 388)

E-14
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
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Service
Multiplexed UNI
.25 .11
Internet Access
Router
192.168.11.0/24
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Internet
Security
Policy
192.168.11.1/24
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