Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

Contents

Small Office Remote Access Switch 151CONFIGURING D EVICE L EVEL DATABASESOn-node Device EntriesPOTS I NFORMATIONP OTS P RIORITYThere are three different selections available for POTS priority. They are:• Preemption of 2nd B-Channel by POTSAppropriate when both B-channels are active to the device. If you select this priority, one of thetwo active data calls to this device will be preempted to service an incoming/outgoing phonecall.• Disconnection by POTS for Last B-ChannelAppropriate when a single B-channel is used for a data call by this device. If you select thispriority, this last B-channel may be disconnected to service an incoming/outgoing phone call.You are implicitly enabling preemption of this device.• None of the AboveThe system will not preempt or disconnect any active data calls to service an incoming/outgoing phone call.C OMPRESSION C ONFIGURATION E LEMENTSDEVICE COMPRESSION STATUSAllows you to enable or disable compression for the individual device. If this option is enabled,then the CyberSWITCH will negotiate compression with this device. Otherwise, the system will notnegotiate compression with this device, leaving the compression resources available for otherdevices. When adding a new device, this option derives its value from the default devicecompression option.Note: Currently applies only to devices which connect using the PPP protocol.STARTING PPP STAC- LZS SEQUENCE NUMBERWhen using the PPP compression with the STAC-LZS protocol, certain devices may not adhere tothe protocol specification’s requirement that sequence numbers begin with 1, resulting in aresynchronization sequence on the first frame which is exchanged. When the peer fully supportsthe CCP protocol’s Reset mechanism, this will only result in the minor inconvenience of a lost frameat the beginning of a session. However, if such a device’s resynchronization mechanism is tocompletely renegotiate CCP (as has been witnessed in testing with some vendors’ devices), thissequence will repeat infinitely.This option provides a way to override the starting sequence number used when connecting tosuch devices. When adding a new device, this option derives its value from the system-wideStarting PPP STAC-LZS Sequence Number, presented previously in the system-wide compressionconfiguration section. In the majority of cases, it will not be necessary to modify this value.As its name implies, this option is only used when the device connects using the PPP protocol.O N -NODE DEVICE D ATABASE BACKGROUND I NFORMATIONThe On-node Device Table is a set of valid devices that can access the network resources connectedto the system. The On-node Device Table contains a symbolic name for the device and a uniqueidentifier that is used to enforce device security. The On-node Device Table is referenced when atleast one device level system security option is enabled.