Table of Contents
Advertisement
Table 23 Device Operation > Device Configuration > Network > WAN > WAN1/2 - PPTP
(ZyNOS ZyWALL with two WAN ports) (continued)
LABEL
RIP Version
Multicast
Apply
Reset
5.3.3 Dial Backup (ZyNOS ZyWALL)
Vantage CNM can communicate with the device using Dial Backup if the main WAN
connection goes down. Use this screen to configure Dial Backup on the device.
Vantage CNM User's Guide
DESCRIPTION
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 interoperability between
IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.
Click Apply to save your changes back to the Vantage CNM.
Click Reset to begin configuring this screen afresh.
Chapter 5 Device Network Settings
85
Advertisement
Table of Contents
Troubleshooting
