Cyclades-PR4000

 

 

Internet Service Provider

ISDN

 

 

 

Server

Modem

 

 

LAN

Packet

 

 

 

 

 

Packet

Link 1

 

PR4000

 

 

 

 

 

 

Primary Link

Master

 

 

 

 

 

 

MC PPP End Point Discriminator 11:22:33:44:55:66

BC

 

MC PPP IP Address (Ethernet IP Address): 200.200.200.1

 

 

 

PR4000

BC

 

 

 

 

 

MC PPP End Point Discriminator 11:22:33:44:55:66

 

 

MC PPP IP Address (Ethernet IP Address): 200.200.200.2

 

 

 

 

PR4000

BC

 

 

 

 

 

MC PPP End Point Discriminator 11:22:33:44:55:66

 

 

MC PPP IP Address (Ethernet IP Address): 200.200.200.3

 

 

FIGURE 8.6 FIRST INCOMING CONNECTION OF A MULTICHASSIS PPP CIRCUIT

The RAS that receives the second connection from the same ISDN modem (shown in Figure 8.7), has already been informed by the broadcast message that the first RAS has the primary link. The connection is set up as a secondary link with this RAS (IP 200.200.200.3 in the example) as the slave. The information is not sent directly to its final destination. Rather, the packets are sent to the master RAS where they are joined with packets sent through other physical links before being forwarded to their final destination.

Chapter 8 - The E1 and T1 Interfaces, With Signaling

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Avocent Cyclades-PR4000 installation manual Internet Service Provider, Modem