Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

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USER’S GUIDE370 CyberSWITCHX.25 C ONNECTIONSProblem:An X.25 access is configured, but thex.25 stats command response is:No X.25 Access configuredAction:Verify that the proper line and port have been selected.1. Enter theer command to erase the report log.2. Enter thetrace lapb on command.3. Wait 20 seconds, then enter thedr command to display the report log. The status log shoulddisplay a sequence of the following messages:(I) 17:33:35.38 #1067: Out - LAPB RR, Rx Sequence = 1(I) 17:33:35.38 #0000: 01 31 00 2A(I) 17:33:35.38 #1067: IN - LAPB RR, Rx Sequence = 1(I) 17:33:35.38 #0000: 01 31 A2 004. If these messages are not displayed, verify with the service provider that the line and bearer areprovisioned for X.25 packet access, and the LAPB addressing format, modulo 8 or 128, isconsistent with the line provisioning.5. If the log contains a sequence similar to the following:(I) 17:33:32.32 # 1067: IN - LAPB SABM(I) 17:33:42.32 # 1067: IN - LAPB SABM(I) 17:33:52.32 # 1067: IN - LAPB SABMverify with the service provider verify that the line and bearer are provisioned for X.25 packetaccess, and the LAPB addressing format, modulo 8 or 16, is consistent with the lineprovisioning.6. If the log contains a sequence similar to the following:(I) 17:33:32.32 # 1067: IN - LAPB SABM(I) 17:33:32.32 # 0000: 03 3F A6 04(I) 17:33:32.32 # 1C05: x25 access 1 in state ACCESS UP forevent LAPB UP(E) 17:33:32.32 # 1C04: Invalid event for access 1(I) 17:33:32.32 # 1C05: x25 access 1 in state ACCESS UP forevent X25 DOWN(I) 17:33:32.32 # 1067: Out - LAPB UA(I) 17:33:32.32 # 0000: 03 73 00 10verify that the LAPB timer values are consistent with the service provider specifications.