Cabletron Systems CSX1200 User Manual

Also see for CyberSWITCH CSX1000: User guide Quick start

Contents

USER’S GUIDE114 CyberSWITCHThe WAN IP Network Interface is used to define remote IP devices (hosts or routers) that requireaccess to the central network. This network interface represents a different subnet than thatconnected to a LAN network interface. The WAN IP Network Interface is used for both IP Host andPPP remote devices.The WAN (Direct Host) IP Network Interface allows you to extend the LAN subnet to remote devices.The WAN (Direct Host) IP Network Interface is used for IP Host and PPP remote devices. Whenconfiguring a WAN (Direct Host) interface, you must specify the Direct Host interface name andits associated LAN interface. You may also specify filters and DHCP proxy client information forthis interface type. Note that the RIP feature is not supported for this interface.The RLAN (Remote LAN) IP Network Interface allows remote MAC layer bridge devices to connectto an IP subnet. The CyberSWITCH treats all devices connected to the RLAN Network Interface asif they were connected to the same Ethernet segment. The system provides an explicit IP routerpresence on this RLAN that is implemented over ISDN. IP Address Resolution requests areintelligently propagated to remote bridged networks connected on the RLAN network interface.The WAN RLAN Network Interface is used for HDLC Bridge and PPP remote devices.The WAN (UnNumbered) Interface allows you to configure an IP WAN interface without assigningan IP address to it. With this feature, unnecessary logical IP sub-network numbers for the WANconnections do not have to be created; therefore, IP sub-network numbers can be saved. Note thatif a WAN (UnNumbered) Interface is configured, you must first add any devices that will be usedas next hop devices (for static routes), before you can configure the static routes themselves. This isbecause you will need to enter the device’s name for the next hop device, and you will not beallowed to do this if you have not already configured the device.The UnNumbered Network Interface allows you to configure an IP WAN Interface withoutassigning an IP address to it (for PPP devices only). Unnecessary logical IP (sub-) network numberscan be saved. The Quick Start’s section regardingCyberSWITCH Connectivity via PPP illustrates theassociated steps needed to set up an UnNumbered Interface for PPP devices.Basically, for each PPP device that shares the UnNumbered interface, you must:• Configure an IP LAN Network Interface (if not already configured).• Add a WAN UnNumbered Interface (if not already configured).• Skip ahead to the main menu Security selection (3), and add the device that will be used as thenext hop device. You must do this because to add the static route for an UnNumbered interface,you need to enter another system’s (a device’s) name for the next hop device. To do this, youmust already have a device configured.• When entering the device list information for the system that will act as the next hop, enter0.0.0.0 as the device’s IP address because this is an UnNumbered network interface.• Return to the options configuration and add a static route to the other system(s) sharing the Un-Numbered Interface, using the other system’s name as the next hop device.Note: The RIP feature is not supported for UnNumbered WAN Interfaces.The following diagrams provide examples of each interface type. The variety of network interfacesavailable allows you to install a wider range of devices at the remote sites.