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Table 6-6 IP Setup
LABEL
RIP Version
The RIP Version field controls the format and the broadcasting method of the RIP
packets that the Contivity 221 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. By
default, the RIP Version field is set to RIP-1.
Multicast
Choose None (default), IGMP-V1 or IGMP-V2. 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.
Windows Networking (NetBIOS over TCP/IP): Windows Networking (NetBIOS over TCP/IP): NetBIOS
(Network Basic Input/Output System) are TCP or UDP broadcast packets that enable a computer to
connect to and communicate with a LAN. For some dial-up services such as PPPoE or PPTP, NetBIOS
packets cause unwanted calls.
Allow From WAN
Select this option to forward NetBIOS packets from the WAN port to the LAN port.
to LAN
Allow Trigger Dial
Select this option to allow NetBIOS packets to initiate calls.
Apply
Click Apply to save your changes back to the Contivity 221.
Reset
Click Reset to begin configuring this screen afresh.
Configuring WAN MAC
6.6
To change your Contivity 221's WAN MAC settings, click WAN, then the WAN MAC tab. The
screen appears as shown.
DESCRIPTION
Contivity 221 VPN Switch User's Guide
WAN Screens 6-11
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