Prestige 324 User’s Guide
5-2
LAN Screens
These parameters should work for the majority of installations. If your ISP gives you explicit DNS server
address(es), read the embedded web configurator help regarding what fields need to be configured.
5.3.2 IP Address and Subnet Mask
Refer to the
IP Address and Subnet Mask
section in the
Wizard Setup
chapter for this information.
5.3.3 RIP Setup
RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to exchange routing
information with other routers.
RIP Direction
controls the sending and receiving of RIP packets. When set
to
Both
or
Out Only
, the Prestige will broadcast its routing table periodically. When set to
Both
or
In Only
,
it will incorporate the RIP information that it receives; when set to
None
, it will not send any RIP packets
and will ignore any RIP packets received.
RIP Version
controls the format and the broadcasting method of the RIP packets that the Prestige sends (it
recognizes both formats when receiving).
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
send 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.
By default,
RIP Direction
is set to
Both
and
RIP Version
to
RIP-1
.
5.3.4 Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient) or
Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of hosts on the
network - not everybody and not just 1.
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a
Multicast group - it is not used to carry user data. 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. The class D IP address is used to identify host groups and can be in the range 224.0.0.0 to
239.255.255.255. The address 224.0.0.0 is not assigned to any group and is used by IP multicast computers.
The address 224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts
(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP. The address
224.0.0.2 is assigned to the multicast routers group.
The Prestige supports both IGMP version 1 (
IGMP-v1
) and IGMP version 2 (
IGMP-v2
). At start up, the
Prestige queries all directly connected networks to gather group membership. After that, the Prestige
periodically updates this information. IP multicasting can be enabled/disabled on the Prestige LAN and/or
WAN interfaces in the web configurator (
LAN
;
WAN
). Select
None
to disable IP multicasting on these
interfaces.
Summary of Contents for P-324
Page 1: ...Prestige 324 Intelligent Broadband Sharing Gateway User s Guide Version V3 61 JF 0 April 2004 ...
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Page 87: ...Prestige 324 User s Guide WAN Screens 6 17 Figure 6 10 Dial Backup Setup ...
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Page 171: ...Prestige 324 User s Guide Maintenance 13 11 Figure 13 14 Restart ...
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Page 310: ...IX Part IX Appendices and Index This section provides some Appendices and an Index ...
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