ZyXEL p-660h-61 Manual De Usuario

Prestige 662H/HW Series User’s Guide

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Chapter 9 WAN Setup

RIP Version

The RIP Version field controls the format and the broadcasting method of the 

RIP packets that the Prestige sends (it recognizes both formats when 

receiving). 
Choose RIP-1, RIP-2B or RIP-2M.
RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is 

probably adequate for most networks, unless you have an unusual network 

topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the 

difference being that RIP-2B uses subnet broadcasting while RIP-2M uses 

multicasting. Multicasting can reduce the load on non-router machines since 

they generally do not listen to the RIP multicast address and so will not receive 

the RIP packets. However, if one router uses multicasting, then all routers on 

your network must use multicasting, also. 

RIP Direction

RIP (Routing Information Protocol) allows a router to exchange routing 

information with other routers. The RIP Direction field controls the sending and 

receiving of RIP packets. 
Choose Both, In Only or Out Only.
When set to Both or Out Only, the Prestige will broadcast its routing table 

periodically. 
When set to Both or In Only, the Prestige will incorporate RIP information that it 

receives.

Enable Multicast

Select this check box to turn on IGMP (Internet Group Multicast Protocol). 

IGMP is a network-layer protocol used to establish membership in a Multicast 

group - it is not used to carry user data. 

Multicast

Select IGMP-v1 or IGMP-v2. IGMP version 2 (RFC 2236) is an improvement 

over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would 

like to read more detailed information about interoperability between IGMP 

version 2 and version 1, please see sections 4 and 5 of RFC 2236. 

PPP Options

Encapsulation Select 

CISCO PPP from the drop-down list box if your backup WAN device 

uses Cisco PPP encapsulation; otherwise select Standard PPP. 

Compression

Select this check box to enable compression. 

Connection 

Nailed-Up Connection Select Nailed-Up Connection when you want your connection up all the time. 

The Prestige will try to bring up the connection automatically if it is 

disconnected.

Connect on Demand

Select Connect on Demand when you don't want the connection up all the 

time and specify an idle time-out in the Max Idle Timeout field.

Max Idle Timeout

Specify an idle time-out in the Max Idle Timeout field when you select Connect 

on Demand. The default setting is 0, which means the Internet session will not 

timeout.

Budget

The configuration in the Budget fields has priority over your Connection 

settings.

Allocate Budget

Type the amount of time (in minutes) that the dial backup connection can be 

used during the time configured in the Period field. Set an amount that is less 

than the time period configured in the Period field. If you set the Allocated 

Budget to 0, you will not be able to use the dial backup connection.

Period 

Type the time period (in hours) for how often the budget should be reset. For 

example, to allow calls to this remote node for a maximum of 10 minutes every 

hour, set the Allocated Budget to 10 (minutes) and the Period to 1 (hour). If 

you set the Period to 0, there is no budget control and the Prestige uses the 

Connection settings. 

Table 28   Advanced WAN Backup (continued)