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WebShare 141W
A02-RA141-W54 Pag. 31
DHCP server enabled with 100 client IP addresses starting from 192.168.1.100.
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.
5.4.2 IP Address and Subnet Mask
Refer to the IP Address and Subnet Mask section in the Wizard Setup chapter for
this information.
5.4.3 RIP Setup
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. When set to:
1. Both - the ADSL Router will broadcast its routing table periodically and
incorporate the RIP information that it receives.
2. In Only - the ADSL Router will not send any RIP packets but will accept all RIP
packets received.
3. Out Only - the ADSL Router will send out RIP packets but will not accept any
RIP packets received.
4. None - the ADSL Router will not send any RIP packets and will ignore any RIP
packets received.
The Dynamic Route field controls the format and the broadcasting method of the
RIP packets that the ADSL Router 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 sends the routing data in RIP-2 format; the difference
being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting.
5.4.4 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