Factory Lan Defaults; Rip Setup - Telkom ADSL 5100 Instruction Manual

4.4.1 Factory LAN Defaults

The LAN parameters of the TELKOM ADSL 5100 are preset in the factory with the following
values:
IP address of 10.0.0.2 with subnet mask of 255.255.255.0 (24 bits)
DHCP server enabled with 100 client IP addresses starting from 10.0.0.100.
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.
4.4.2 IP Address and Subnet Mask
Refer to the IP Address and Subnet Mask section in the Wizard Setup chapter for this information.

4.4.3 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 TELKOM ADSL 5100 will broadcast its routing table periodically and incorporate the
RIP information that it receives.
2. In Only - the TELKOM ADSL 5100 will not send any RIP packets but will accept all RIP packets
received.
3. Out Only - the TELKOM ADSL 5100 will send out RIP packets but will not accept any RIP
packets received.
4. None - the TELKOM ADSL 5100 will not send any RIP packets and will ignore any RIP packets
received.
The Version field controls the format and the broadcasting method of the RIP packets that the
TELKOM ADSL 5100 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.
4.4.4 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 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
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