ZyXEL p-660h-61 Guida Utente

Pagina di 354
Prestige 660H Series User’s Guide 
Bridging Setup   
         27-1 
Chapter 27 
Bridging Setup 
This chapter shows you how to configure the bridging parameters of your Prestige. 
27.1  Bridging in General 
Bridging bases the forwarding decision on the MAC (Media Access Control), or hardware address, 
while routing does it on the network layer (IP) address. Bridging allows the Prestige to transport 
packets of network layer protocols that it does not route, for example, SNA, from one network to 
another. The caveat is that, compared to routing, bridging generates more traffic for the same network 
layer protocol, and it also demands more CPU cycles and memory. 
For efficiency reasons, do not turn on bridging unless you need to support protocols other than IP on 
your network. For IP, enable the routing if you need it; do not bridge what the Prestige can route. 
27.2  Bridge Ethernet Setup 
Basically, all non-local packets are bridged to the WAN. Your Prestige does not support IPX. 
27.2.1 Remote Node Bridging Setup 
Follow the procedure in another section to configure the protocol-independent parameters in Menu 
11.1 – Remote Node Profile
. For bridging-related parameters, you need to configure Menu 11.3 – 
Remote Node Network Layer Options
To setup Menu 11.3 – Remote Node Network Layer Options shown in the next figure, follow these 
steps: 
1. 
In menu 11.1, make sure the Bridge field is set to Yes