Chapter 7 LAN
P-2302HWUDL-P1 Series User’s Guide
107
Please note that DNS proxy works only when the ISP uses the IPCP DNS server extensions. It
does not mean you can leave the DNS servers out of the DHCP setup under all circumstances.
If your ISP gives you explicit DNS servers, make sure that you enter their IP addresses in the
LAN Setup
screen. This way, the ZyXEL Device can pass the DNS servers to the computers
and the computers can query the DNS server directly without the ZyXEL Device’s
intervention.
7.1.5 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:
•
Both
-
the ZyXEL Device will broadcast its routing table periodically and incorporate the
RIP information that it receives.
•
In Only
-
the ZyXEL Device will not send any RIP packets but will accept all RIP packets
received.
•
Out Only
-
the ZyXEL Device will send out RIP packets but will not accept any RIP
packets received.
•
None
-
the ZyXEL Device 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
ZyXEL Device 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.
7.1.6 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 messages and is assigned to the permanent group of all IP hosts
(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP.
The address 224.0.0.2 is assigned to the multicast routers group.
Summary of Contents for Network Device P-2302
Page 2: ......
Page 8: ...Safety Warnings P 2302HWUDL P1 Series User s Guide 8 ...
Page 10: ...Contents Overview P 2302HWUDL P1 Series User s Guide 10 Appendices and Index 285 ...
Page 32: ...32 ...
Page 46: ...Chapter 2 Introducing the Web Configurator P 2302HWUDL P1 Series User s Guide 46 ...
Page 66: ...Chapter 3 Wizard Setup P 2302HWUDL P1 Series User s Guide 66 ...
Page 77: ...77 PART II Network Wireless LAN 79 WAN 95 LAN 105 NAT 117 ...
Page 78: ...78 ...
Page 94: ...Chapter 5 Wireless LAN P 2302HWUDL P1 Series User s Guide 94 ...
Page 116: ...Chapter 7 LAN P 2302HWUDL P1 Series User s Guide 116 ...
Page 125: ...125 PART III VoIP SIP 127 Phone 141 Phone Book 155 PSTN Line 159 VoIP Trunking 161 ...
Page 126: ...126 ...
Page 136: ...Chapter 9 SIP P 2302HWUDL P1 Series User s Guide 136 Figure 74 VoIP SIP SIP Settings Advanced ...
Page 154: ...Chapter 10 Phone P 2302HWUDL P1 Series User s Guide 154 ...
Page 176: ...Chapter 13 VoIP Trunking P 2302HWUDL P1 Series User s Guide 176 ...
Page 177: ...177 PART IV Security Firewall 179 Content Filter 187 ...
Page 178: ...178 ...
Page 186: ...Chapter 14 Firewall P 2302HWUDL P1 Series User s Guide 186 ...
Page 190: ...Chapter 15 Content Filter P 2302HWUDL P1 Series User s Guide 190 ...
Page 192: ...192 ...
Page 196: ...Chapter 16 Static Route P 2302HWUDL P1 Series User s Guide 196 ...
Page 228: ...Chapter 19 UPnP P 2302HWUDL P1 Series User s Guide 228 ...
Page 250: ...Chapter 21 File Sharing P 2302HWUDL P1 Series User s Guide 250 ...
Page 251: ...251 PART VI Maintanence and Troubleshooting System 253 Logs 261 Tools 273 Troubleshooting 279 ...
Page 252: ...252 ...
Page 260: ...Chapter 22 System P 2302HWUDL P1 Series User s Guide 260 ...
Page 272: ...Chapter 23 Logs P 2302HWUDL P1 Series User s Guide 272 ...
Page 278: ...Chapter 24 Tools P 2302HWUDL P1 Series User s Guide 278 ...
Page 286: ...286 ...
Page 292: ...Appendix A Product Specifications P 2302HWUDL P1 Series User s Guide 292 ...
Page 322: ...Appendix E SIP Passthrough P 2302HWUDL P1 Series User s Guide 322 ...
Page 346: ...Appendix H Legal Information P 2302HWUDL P1 Series User s Guide 346 ...