Cabletron Systems CyberSWITCH CSX400 User Manual

Also see for CyberSWITCH HSIM-W6: Setup guide Configuration guide User guide Installation guide

Contents

System Level ScreenLocal Management User’s Guide1-17Subnet Mask — This field displays the default Subnet Mask, and allows you to enter a new valuefor the Subnet Mask if necessary. Subnets are logical divisions of the network that isolate groupsof devices. A subnet mask “masks out” the network bits of the IP address by setting the bits in themask to 1 when the network treats the corresponding bits in the IP address as part of the networkor subnetwork address, or to 0 if the corresponding bit identifies the host. The default subnet maskuses the first two portions of the IP address to identify the net id, leaving the rest of the IP addressto identify specific nodes.• When the management workstations designated to receive SNMP traps reside on the samenetwork as the HSIM or CyberSWITCH, use the Subnet Mask default setting for the IP addressentered on the System Level screen.• Set a new value for the Subnet Mask when the management workstations designated to receiveSNMP traps reside on a different subnet (for example, across a gateway or router).To set a Subnet Mask, refer to Setting the Subnet Mask.Phys Address — This field displays the physical address of the HSIM or CyberSWITCH. Youcannot modify the physical address.Default Gateway — Use this field to enter the IP address for the Default Gateway, intended forbridging only mode. For routing use a default route entry in your routing table. This field containsthe IP address of the device to which all packets addressed to an unknown network or host are sent.The HSIM or CyberSWITCH relies on a Default Gateway to provide the routes to destinations thatare not listed in its own IP Forwarding Table, and to forward SNMP traps to a management station.The default setting for this field is NONE DEFINED. To set the Default Gateway, refer to Settingthe Default Gateway.Default Interface — Use this field to select the default interface for the HSIM or CyberSWITCHDefault Gateway, intended for bridging only mode. For routing use a default route entry in yourrouting table. The default interface is the channel which is set up to handle SNMP traps sent to anIP station that is not on the same subnet as the HSIM or CyberSWITCH in an IP routedenvironment. The default setting for this field is NONE DEFINED. To set the default interface forthe Default Gateway of the HSIM or CyberSWITCH, refer to Setting the Default Interface.