Avocent Cyclades-PR4000 Channel Menu CONFIG=INTERFACE=T1/E1=CHANNEL, Multilink Options

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	Sets parameters particular to the signaling mode, and determines the phone number and modem
(CAS)	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:

1Multichassis, Multilink PPP,

2Multilink PPP,

3CyROS 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.

Chapter 8 - The E1 and T1 Interfaces, With Signaling 64