Avocent Cyclades-PR4000 - Manual (Page 64)

64 Chapter 8 - The E1 and T1 Interfaces, With Signaling
Cyclades-PR4000
Channel Menu CONFIG=>INTERFACE=>T1/E1=> <CHANNEL>
Menu Option Description
Encapsulation Determines the data-link layer protocol to be used for this communication link.
Network Protocol Provides menus for the IP and Transparent Bridge parameters, including rules to be applied to this
interface.
Routing Protocol Configures RIP parameters.
ISDN(CCS) / Signaling
(CAS) Sets parameters particular to the signaling mode, and determines the phone number and modem
profile.
Traffic Control Sets the Bandwidth of the connection for use with traffic control rules and associates a Traffic Control
Rule List to this interface. See section 4.7 for more information on traffic control rules.
Authentication Determines the method used for authentication for connections on this line.
Wizards Tools that aid in the configuration of the interface for common applications.
The encapsulation options, PPP, PPPCHAR, CHAR, Slip, and SlipChar are discussed in chapter 10.
Multilink Options
There are three ways to make two or more physical links perform as one logical link:
1 Multichassis, Multilink PPP,
2 Multilink PPP,
3 CyROS Multilink (at the network-protocol level).
Multichassis PPP is a feature that allows two or more connections to different PR4000s on the same LAN act as
one logical connection. The Cyclades Multichassis PPP implementation is compatible with the Lucent Portmaster
3 (either PR4000s/PR3000s or Portmaster 3s can be used to form the multichassis circuit). The multichassis PPP
functionality is demonstrated in Figures 8.6 and 8.7.
Figure 8.6 shows a RAS bank in an Internet Service Provider. The RAS that receives the first connection becomes
the master and the connection becomes the primary link. The information sent on link 1 passes through the RAS
and continues on to its destination (in this example, a server on the LAN). At the same time, the RAS (IP
200.200.200.1 in the example) sends a broadcast message to all other RASs in the same group letting them know
that it has the primary link for this PPP connection.