Cisco 10000 - Manual (Page 167)

5-3
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 5 Configuring the Layer 2 Tunnel Protocol Access Concentrator and Network Server
Layer 2 Access Concentrator
Figure 5-1 Terminating and Forwarding Sessions from the LAC
Figure 5-2 Placing Sessions from the LAC in VRFs
Cisco 10000
ESR
PPPoX
sessions
PPPoE
sessions
OC-3/OC-12 ATM
Routed
subscribers
GigEthernet or
OC-12 POS IP
routed traffic
AAA servers
ISP/corporate
network
Client
Client
Client
Client
ATM
network
EMS/NMS
76099
CPE
PPP in L2TP
sessions
Retail LNS
provider
Provider 1
Provider 2
Provider n
69867
L2TP sessions
are terminated
and placed in a VRF
Wholesale LNS
provider
Cisco 10000 ESR
VRF 1
VRF n
VRF 2
LAC
Access network
(ATM or Ethernet)
IP
transport
network