【正文】 t switch switch name is link protocol status Switch switch name interface down (SNMP linkDown trap) on LPort LPort name? If you notice a physical port problem at the same time that you notice a problem with a logical port associated with that physical port, then the problem lies with the physical port.檢查L(zhǎng)port的狀態(tài) :此為幀中繼Lport, 有LMI狀態(tài), ATM Lport沒(méi)有協(xié)議狀態(tài).Check 幀中繼LMI status and troubleshooting :When LMI Operator Status is Down, the operational status of any PVCs associated with the logical port is Inactive.LMI Operator Status could be Down for any of the following reasons:? CPE equipment, such as a router, may have been powered down.? A physical layer problem may exist. In this case, look for a trap that indicates a change in physical port status or check physical port summary statistics errors.? A Frame Relay configuration error may exist. Examples of configuration problems include a misconfigured DCE poll timer or a misconfigured logical port type.? Hardware failures may have occurred, as indicated by traps and background diagnostics.Under normal conditions:? For UNI DCE logical ports, the sum of the DCE Status Frames Transmitted and the DCE Full Status Frames Transmitted should be equal to the DCE Status Enquiry Frames Received.? For UNI DTE logical ports, the sum of the DTE Status Frames Received and the DTE Full Status Frames Received should be equal to the DTE Status Enquiry Frames Transmitted.If these statistics do not add up, a problem exists with the exchange of status enquiry and status response frames between DTE and DCE.If you notice DTE or DCE errors (such as DTE/DCE Error Frames Received or DTE/DCE Status Enquiry Frames Error Count), a link management configuration problem may exist.The problem may be that the DCE Poll Verify Timer is set to a value less than the DTE Poll Interval. This is a typical configuration error — the DCE Poll Verify Timer should be higher than the DTE Poll Interval.Some mon configuration errors may happen with logical port as follows :? Frame Relay encapsulation : Cisco router : encapsulation framerelay ietf (use FRC1490/2427 encapsulation)? LMI protocol mismatch between switch logical port and CPE (such as router)You can isolate logical port problems in two ways:? Run diagnostics and loopbacks Once you have verified that a problem exists, you can isolate the problem with internal and external diagnostics and loopbacks. These diagnostics and loopbacks are similar to the diagnostics and loopbacks you can use to test physical ports.? Change logical ports from UNI to NNIBy changing a UNI logical port to an NNI logical port, you configure the logical port to act as both DTE and DCE. The logical port can then generate a DCE status enquiry and respond to it as well.Once you change the logical port, you must place a loopback connector at either: ? The logic。這對(duì)于BSTDX模塊特別重要，因?yàn)檫@種模塊全都有非易失性的RAM存儲(chǔ)器。說(shuō)明網(wǎng)管已管理不到該模塊，有可能是該模塊未插好、板卡死掉、或是板卡損壞。b. 如圖示取出風(fēng)扇過(guò)濾網(wǎng)。7) 每個(gè)文件需要大約15分鐘才能下載完畢。輸出結(jié)果如下面的例子所示： SFPK PowerUp Diagnostics Revision Copyright (c) 1995, Cascade Communications Corp. CardType=0xFF01 Rev 04 SN=22A13584 in Slot1 Boot PROM Checksum Test.........Passed i960 RPU Test...................Passed IRAM Memory Test (16MB).........Passed IRAM Boundary Test..............Passed IRAM Transfer Test..............Passed DUART Test......................Passed Clearing 16MB IRAM*******************************MORE CARD INFO ********************************* CardType=0xFF01 Rev 04 in Slot 1 Serial 22A13584 512KB SRAM Installed 16MB IRAM Installed 4MB SMEM Installed 128KB PRAM Installed AMD_400T 4096KB Boot Flash Present*******************************************************************************Mon960 Extended POST Version . Executing Extended POST. Approximately 1:00 minute remains before test pletion.Extended POST pleted.SP Boot Flash Copyright (c) 19911999 Lucent Communications Inc.Build ID: 57R00000007, Build date: :48:39Mon960 monitor for the Intel i960 CACopyright 1992, Intel Corporation (CA step number 00)LUCENT COMMUNICATIONS 6510900000Version Feb 20 1998SP Application Copyright (c) 19911999 Lucent Communications Inc.Build ID: 57R00000014, Build date: :24:24如何下載交換機(jī)代碼到SP中 :在某些時(shí)候可能需要下載交換機(jī)代碼到SP中，操作的步驟如下：1) 拉下備份SP的插銷，將一臺(tái)PC機(jī)接到SP前面板的9針診斷端口上。bottom500 show soft flashActive SP has the following software:Set A:Part Revision Size Description7000913800 370257 SP Boot Flash [57R00000007]7000903800 1112754 SP Application [57R00000014]7000914100 483400 IOM1 Boot Flash [57R00000007]7000904100 1099562 IOM1 Application [57R00000015]7000914300 406984 IOM2 Boot Flash [57R00000007]7000904300 1283685 IOM2 Application [57R00000009]Set B:Part Revision Size Description7000913800 376745 SP Loader Image7000903800 532835 SP Application Image7000914100 464745 IOM1 Loader Image7000904100 495377 IOM1 Application ImageStandby SP has the following software:Set A:Part Revision Size Description7000913800 370257 SP Boot Flash [57R00000007]7000903800 1112754 SP Application [57R00000014]7000914100 483400 IOM1 Boot Flash [57R00000007]7000904100 1099562 IOM1 Application [57R00000015]7000914300 406984 IOM2 Boot Flash [57R00000007]