ZyXEL Communications Vantage CNM 2.3 User Manual page 74

Chapter 5 Device Network Settings
Table 19 Device Operation > Device Configuration > Network > WAN > ISP
(PPPoE) – ZyNOS ZyWALL (one WAN port) (continued)
LABEL
RIP Direction
RIP Version
Multicast
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5.3.1.3 PPTP Encapsulation
Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure
transfer of data from a remote client to a private server, creating a Virtual Private
Network (VPN) using TCP/IP-based networks.
PPTP supports on-demand, multi-protocol and virtual private networking over
public networks, such as the Internet.
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DESCRIPTION
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, None, In Only or Out Only.
When set to Both or Out Only, the device will broadcast its routing table
periodically.
When set to Both or In Only, the device will incorporate RIP information
that it receives.
When set to None, the device will not send any RIP packets and will
ignore any RIP packets received.
By default, RIP Direction is set to Both.
The RIP Version field controls the format and the broadcasting method
of the RIP packets that the device 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.
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 inter operability between IGMP version 2 and version
1, please see sections 4 and 5 of RFC 2236.
Click this to save your changes back to the device.
Click this to begin configuring this screen afresh.
Vantage CNM User's Guide