Configure The Wan Ports And Atm Virtual Connections - Cisco 678 Installation And Operation Manual

Configure the WAN Ports and ATM Virtual Connections

Configure the WAN Ports and ATM Virtual
Connections
Cisco 600 Series Installation and Operation Guide
5-12
The Cisco 67x has two types of WAN ports: physical (wan0) and logical
(wan0-x). The physical WAN port connects the Cisco 67x to the wide area
network. The logical WAN port or ports allow you to create virtual WAN
connections for plural destinations. To configure logical WAN ports, you must
provision ATM virtual connections. The instructions for each are provided in this
section.
The Cisco 67x automatically trains up to the ideal line speed. By default, the
Cisco 67x is provisioned with the following rates:
Encoding Downstream/Upstream Rate (Mbps)
DMT 8.032/.864
CAP 7.168/1.088
G.Lite 1.536/.512
The maximum operative rate is determined by the central office ADSL equipment,
line length and line conditions.
On the Cisco 67x, the WAN0 port is always ready to send and receive network
traffic.You need to define an ATM virtual connection (VC), which might differ
from the default, when communicating across an ATM network. There are two
types of ATM connections:
Virtual paths, identified by virtual path identifiers (VPI)
•
Virtual circuit, identified by the combination of a VPI and a virtual circuit
•
identifier (VCI).
Because the Cisco 67x connects to the Cisco 6xxx series, the subscriber side
VPI/VCI settings are not seen by the ATM network. All subscriber side VCs use
VPI 1 and VCI 1 by default.
Cisco 67x comes preconfigured with one VC already established. Each VC is
expressed as WAN0-x, where x is a number between 0 and 3.
Chapter 5 Configuration Procedures for the Cisco 67x CPE Devices
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