ZyXEL Communications P-662HW-61 User Manual page 123

Prestige 662HW Series User's Guide
Table 28 Advanced WAN Backup (continued)
LABEL
RIP Version
RIP Direction
Enable Multicast
Multicast
PPP Options
Encapsulation
Compression
Connection
Nailed-Up Connection Select Nailed-Up Connection when you want your connection up all the time.
Connect on Demand
Max Idle Timeout
Budget
Allocate Budget
Period
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DESCRIPTION
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 (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.
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.
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.
Select CISCO PPP from the drop-down list box if your backup WAN device
uses Cisco PPP encapsulation; otherwise select Standard PPP.
Select this check box to enable compression.
The Prestige will try to bring up the connection automatically if it is
disconnected.
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.
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.
The configuration in the Budget fields has priority over your Connection
settings.
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.
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.
Chapter 9 WAN Setup