Руководство По Устранению Ошибки для Cisco Cisco Packet Data Gateway (PDG)
Cisco ASR 5000 Series Enhanced Feature Configuration Guide ▄
OL-22982-01
Chapter 21
L2TP Access Concentrator
This chapter describes the Layer 2 Tunneling Protocol (L2TP) Access Concentrator (LAC) functionality support on
ST16 and Cisco® ASR 5000 Chassis and explains how it is configured.
ST16 and Cisco® ASR 5000 Chassis and explains how it is configured.
The product Administration Guides provide examples and procedures for configuration of basic services on the system.
It is recommended that you select the configuration example that best meets your service model, and configure the
required elements for that model, as described in the respective product Administration Guide, before using the
procedures in this chapter.
It is recommended that you select the configuration example that best meets your service model, and configure the
required elements for that model, as described in the respective product Administration Guide, before using the
procedures in this chapter.
Important:
This product requires the purchase of a separate session licence and feature key in order to function
as described.
When enabled though the session license and feature use key, the system supports L2TP for encapsulation of data
packets between it and one or more L2TP Network Server (LNS) nodes. In the system, this optional packet
encapsulation, or tunneling, is performed by configuring L2TP Access Concentrator (LAC) services within contexts.
packets between it and one or more L2TP Network Server (LNS) nodes. In the system, this optional packet
encapsulation, or tunneling, is performed by configuring L2TP Access Concentrator (LAC) services within contexts.
Important:
The LAC service uses UDP ports 13660 through 13668 as the source port for sending packets to the
LNS.