Installation guide

Wave data routing 30-7
Chapter 30: Understanding Wave Data Networking
Wave Global Administrator Guide
• You can assign multiple IP addresses to any router port/network interface, as long as
there are not two machines with the same address on the same network.
• In general, a host route subnet mask is 255.255.255.255 and is used for referring to a
single machine; a default static route subnet mask is 0.0.0.0; and a subnet mask is in
between the host and the default, typically with an address of 255.255.255.0.
• The default gateway address, which answers the question “Who do I contact when a
machine is not on my subnet?,” is that of the closest router on the subnet. If the network
interface address is x.x.3.1, the default gateway address is x.x.3.1. Ask your network
administrator for the appropriate address.
Using a proxy server with Wave
Proxy servers convert private IP addresses to public IP addresses for sending packets over the
Internet. If your network uses private IP addresses (such as the default Wave IP addresses), you
can use a proxy server or a network address translator (NAT) to perform IP address translation.
• If your network has an existing proxy server, connect one network interface of the Wave
Server into the subnet containing the proxy.
• If you have no existing proxy server, create a subnet on which you put all your internet
services—such as proxy server, mail server, and Web server—with official IP addresses.
Set up a separate subnet for all machines using unofficial IP addresses as proxy clients.
Routing protocols
Routing protocols implement dynamic routing, modifying paths as needed, taking advantage of
more efficient routes, and avoiding broken networks. Routing protocols are used by routers to
communicate current routing information to other routers and to workstations using these
routers. They allow an end-to-end path for packets to be chosen, while only requiring each
router to know the path to the next router. The routing cost of a path is measured by a metric,
and the least expensive path is always chosen.
As multiple routers or Ethernet subnets are added to a network, dynamic routing allows more
efficient routing and error recovery. For example, if there are two Wave Servers, only the first
one needs to have an active dial-up connection to the ISP. The second Wave Server can forward
any ISP-bound packets to the first, instead of using its one connection to dial the same ISP.
Additionally, if the WAN card in the first Wave Server failed, it could route all ISP-bound
packets to the second Wave Server.
Release 2.0
September 2010