1-7Clearing the 16-bit Interface Indexes Not Used in the Current SystemIn practical networks, the network management software requires the device to provide a uniform,stable 16-bit interface index. That is, a one-to-one relationship should be kept between the interfacename and the interface index in the same device.For the purpose of the stability of an interface index, the system will save the 16-bit interface index whena board or logical interface is removed.If you repeatedly insert and remove different subboards to create or delete a large number of logicalinterfaces, the interface indexes will be used up, which will result in interface creation failures. To avoidsuch a case, you can clear all 16-bit interface indexes saved but not used in the current system in userview.After the above operation,z For a re-created interface, the new interface index may not be consistent with the original one.z For existing interfaces, their interface indexes remain unchanged.Follow these steps to clear the 16-bit interface indexes not used in the current system:To do… Use the command… RemarksClear the 16-bit interfaceindexes saved but not in use inthe current systems of allmember devicesreset unused porttag RequiredAvailable in user viewA confirmation is required when you execute this command. If you fail to make a confirmation within 30seconds or enter N to cancel the operation, the command will not be executed.Identifying and Diagnosing Pluggable TransceiversIntroduction to pluggable transceiversAt present, four types of pluggable transceivers are commonly used, as shown in Table 1-1. They canbe further divided into optical transceivers and electrical transceivers based on transmission medium.Table 1-1 Commonly used pluggable transceiversTransceiver type ApplicationenvironmentWhether can be anoptical transceiverWhether can be anelectrical transceiverSFP (SmallForm-factorPluggable)Generally used for100M/1000M Ethernetinterfaces or POS155M/622M/2.5GinterfacesYes YesSFP+(Enhanced 8.5and 10 Gigabit SmallForm-factorPluggable)Generally used for10G EthernetinterfacesYes Yes
