C H A P T E R 5 Configuring The Layer 2 Tunnel Protocol Access Concentrator And Network Server - Cisco 10000-2P2-2DC Software Configuration Manual

Chapter 5 Configuring the Layer 2 Tunnel Protocol Access Concentrator and Network Server
Figure 5-1
Client
Client
Client
Client
Figure 5-2
CPE
OL-2226-23
Terminating and Forwarding Sessions from the LAC
OC-3/OC-12 ATM
PPPoX
sessions
ATM
network
PPPoE
sessions
AAA servers
Placing Sessions from the LAC in VRFs
LAC
Access network
(ATM or Ethernet)
Cisco 10000
ESR
EMS/NMS
Wholesale LNS
provider
Cisco 10000 ESR
IP
transport
network
PPP in L2TP
sessions
Cisco 10000 Series Router Software Configuration Guide
Layer 2 Access Concentrator
Routed
subscribers
ISP/corporate
network
GigEthernet or
OC-12 POS IP
routed traffic
Retail LNS
provider
Provider 1
VRF 1
VRF 2
Provider 2
VRF n
Provider n
L2TP sessions
are terminated
and placed in a VRF
5-3