Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

Contents

USER’S GUIDE474 CyberSWITCH• Echo ReplyThe Echo Reply is transmitted in response to an Echo Request. The Echo Reply packetcontains the magic number of the sending device. Until the magic number option hasbeen negotiated the value must be set to zero.• Discard RequestThe Discard request packet is transmitted by a device to exercise the data link layerprocessing. This packet is silently discarded by the receiving device.WAN FR_IETF T RACE MESSAGESYou can trace Frame Relay (FR_IETF) incoming and outgoing packets. This FR_IETF traceinformation is placed into the Report log, which can be accessed by using thedr command. Enablethis feature by using thewan fr-ietf trace on command, and disable it withwan fr-ietftrace off. You can specify the direction of the packets (in orout), a particular device or PVC( or) and the protocol (AT,BR,IP, orIPX) to be traced.The following is the format of a FR_IETF trace line as it is displayed bydr:[packet direction] : [device name or fr_accessname_dlci] [protocol] size:[NN]where:[packet direction]Indicates the packet direction. IN means received packet, OUT means transmitted packet.[device name or fr_accesname_dlci]Indicates the device or Frame Relay PVC associated with the traced data.[protocol]Identifies the protocol type of the traced data. Protocol types are AT (AppleTalk), BR (MACLayer Bridge), IP, and IPX.[NN]Identifies the size of the data in bytes.X.25 T RACE M ESSAGESIt is now possible to trace X.25 incoming and outgoing packets. This X.25 trace information is placedinto the Report log, which can be accessed by using thedr command. Enable this feature by usingthetrace x25 on command, and disable it withtrace x25 off.X.25 T RACE M ESSAGE SUMMARYIn - X25 Call Connect LCN , bytesThe DTE has accepted an incoming SVC call.In - X25 Clear Ind LCN , bytesAn SVC call has been cleared by the DCE.