Cabletron Systems CSX1000, CSX1200 manual Isdn, Static Route Background Information

USER’S GUIDE

STATIC ROUTE BACKGROUND INFORMATION

You only need to configure Static Routing entries if you need to access a WAN network that is not directly connected to the system, or if you need to access a LAN network through a router that does not support IP RIP. Static Routes specify the IP address of the next hop router or gateway that provides access to this network.

The following diagram gives an example of a static route definition.

Host

156.1.0.0

Router

128.1.1.3 192.1.1.2

ISDN

WAN Direct Host	WAN Interface
Interface	192.1.1.1

Static Route

IP Address 156.1.0.0

Next Hop 192.1.1.2

	CSX1200
	128.1.1.1			LAN Interface
			128.1.1.2
Static Route		Router
IP Address 131.1.0.0
Next Hop 128.1.1.2

131.1.0.0

In the above diagram, the Static Route entry indicates that access to IP Network 156.1.0.0 is available through the external router at 192.1.1.2.

A static route is not needed for the CyberSWITCH to access WAN Direct Host 128.1.1.3. Because these two devices are directly connected, (note that the IP addresses are on the same subnet), that route will automatically be established through the system’s IP RIP capabilities.

A static route is not needed for system access to IP network 131.1.0.0 through 128.1.1.2 because that route will also be automatically established through the system’s IP RIP capabilities.

128 CyberSWITCH