Encapsulation And Multiplexing Scenarios; Figure 17 Menu 11 - Remote Node Setup - Nortel BCM50a Configuration Manual

Figure 17 Menu 11 – Remote Node Setup

Encapsulation and Multiplexing scenarios

For Internet access you should use the encapsulation and multiplexing methods
used by your ISP. Consult your telephone company for information on
encapsulation and multiplexing methods for LAN-to-LAN applications, for
example between a branch office and corporate headquarters. There must be prior
agreement on encapsulation and multiplexing methods because they cannot be
automatically determined. What methods you use also depends on how many VCs
you have and how many different network protocols you need. The extra
overhead that ENET ENCAP encapsulation entails makes it a poor choice in a
LAN-to-LAN application. Here are some examples of more suitable combinations
in such an application.
• Scenario 1. One VC, Multiple Protocols
PPPoA (RFC-2364) encapsulation with VC-based multiplexing is the best
combination because no extra protocol identifying headers are needed. The
PPP protocol already contains this information.
• Scenario 2. One VC, One Protocol (IP)
Menu 11 - Remote Node Setup
1. ChangeMe (ISP, SUA)
2. -GUI (BACKUP_ISP, SUA)
Enter Node # to Edit:
BCM50a Integrated Router Configuration — Advanced
Chapter 6 Remote Node setup 71