Encapsulation & Multiplexing Scenarios; Figure 4-1 Menu 11 - Remote Node Setup - ZyXEL Communications Prestige 645R User Manual

Prestige P645 ADSL Internet Access Router
When Menu 11.1 - Remote Node Profile appears fill in the fields to define this remote profile.
Descriptions and information about configuring the fields is given in the table that follows.
4.1.2 Encapsulation & Multiplexing Scenarios
For Internet Access you should use the encapsulation and multiplexing methods used by your ISP. For a
LAN-to-LAN application, e.g., branch office and corporate headquarters, prior mutual agreement on
methods used is necessary because there is no mechanism to automatically determine
encapsulation/multiplexing. Selection of which encapsulation and multiplexing methods to use depends on
how many VCs you have and how many different network protocols you need. The extra overhead that
PPPoE and 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.
Scene 1. One VC, Multiple Protocols
PPP (RFC 2364) encapsulation with VC-based multiplexing is the best combination because the extra
protocol identifying headers that LLC-based multiplexing uses are unneeded. The PPP protocol already
contains this information.
Scene 2. One VC, One Protocol (IP)
Selecting RFC-1483 encapsulation with VC-based multiplexing requires the least amount of overhead (0
octets). However, if there is a potential need for multiple protocol support in the future, it may be safer to
select PPP encapsulation instead of RFC-1483, so you don't need to reconfigure when the time comes.
4-2
Menu 11 - Remote Node Setup
1. ChangeMe (ISP, SUA)
2. ________
3. ________
4. ________
5. ________
6. ________
7. ________
8. ________
Enter Node # to Edit:
Figure 4-1 Menu 11 – Remote Node Setup
Remote Node Configuration