{"id":6379,"date":"2026-05-04T12:10:36","date_gmt":"2026-05-04T12:10:36","guid":{"rendered":"http:\/\/docs.connexite.co.uk\/index.php\/docs\/connexite-documentation\/synapse-cli-documentation\/cli-fault-diagnosis\/"},"modified":"2026-05-04T12:19:10","modified_gmt":"2026-05-04T12:19:10","slug":"cli-fault-diagnosis","status":"publish","type":"docs","link":"https:\/\/docs.connexite.co.uk\/index.php\/docs\/network\/synapse-cli-documentation\/cli-fault-diagnosis\/","title":{"rendered":"Fault Diagnosis"},"content":{"rendered":"<h2 class=\"connexite-doc-h2\">Configuring Port Optical Module<\/h2>\n<ul class=\"connexite-doc-list\">\n<li>Configuring Optical-transceiver Monitor Enable<\/li>\n<\/ul>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# optical-transceiver monitor enable<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver monitor enable<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">Enable monitor the specified interface, detect the status of optical module periodically. Default is disabled.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config)# optical-transceiver monitor interval MINUTES<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver monitor interval<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">Set the interval of the transceiver monitor. Default is 15 minutes. Range from 1 to 1440 minutes.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# optical-transceiver threshold temperature HALARM HWARN LWARN LALARM<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver threshold temperature<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">By default, the optical module has own temperature threshold setting, so it is not recommended to configure the temperature threshold. HALARM: high-alarm threshold value, range from -255 to 255 C HWARN: high-warning threshold value, range from -255 to 255 C LWARN: low-warning threshold value, range from -255 to 255 C LALARM: low-alarm threshold value, range from -255 to 255 C The HALARM value should not smaller than HWARN value. The LWARN value should not smaller than LALARM value.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# optical-transceiver threshold voltage HALARM HWARN LWARN LALARM<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver threshold voltage<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">By default, the optical module has own voltage threshold setting, so it is not recommended to configure the voltage threshold. HALARM: high-alarm threshold value, range from 0.00 to 5.00 V HWARN: high-warning threshold value, range from 0.00 to 5.00 V LWARN: low-warning threshold value, range from 0.00 to 5.00 V LALARM: low-alarm threshold value, range from 0.00 to 5.00 V The HALARM value should not smaller than HWARN value. The LWARN value should not smaller than LALARM value.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# optical-transceiver threshold bias HALARM HWARN LWARN LALARM<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver threshold bias<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">By default, the optical module has own bias threshold setting, so it is not recommended to configure the bias threshold. HALARM: high-alarm threshold value, range from 0.00 to 500.00 mA HWARN: high-warning threshold value, range from 0.00 to 500.00 mA LWARN: low-warning threshold value, range from 0.00 to 500.00 mA LALARM: low-alarm threshold value, range from 0.00 to 500.00 mA The HALARM value should not smaller than HWARN value. The LWARN value should not smaller than LALARM value.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# optical-transceiver threshold rx-power HALARM HWARN LWARN LALARM<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver threshold rx-power<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">By default, the optical module has own rx-power threshold setting, so it is not recommended to configure the rx-power threshold. HALARM: high-alarm threshold value, range from -40.00 to 10.00 dBm HWARN: high-warning threshold value, range from -40.00 to 10.00 dBm LWARN: low-warning threshold value, range from -40.00 to 10.00 dBm LALARM: low-alarm threshold value, range from -40.00 to 10.00 dBm The HALARM value should not smaller than HWARN value. The LWARN value should not smaller than LALARM value.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# optical-transceiver threshold tx-power HALARM HWARN LWARN LALARM<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)# no optical-transceiver threshold tx-power<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">By default, the optical module has own tx-power threshold setting, so it is not recommended to configure the tx-power threshold. HALARM: high-alarm threshold value, range from -40.00 to 10.00 dBm HWARN: high-warning threshold value, range from -40.00 to 10.00 dBm LWARN: low-warning threshold value, range from -40.00 to 10.00 dBm LALARM: low-alarm threshold value, range from -40.00 to 10.00 dBm The HALARM value should not smaller than HWARN value. The LWARN value should not smaller than LALARM value. Alarm\/Warning Trap In addition to the alarm or warning message, the optical module monitor will also send a trap message to the smmp server.<\/p>\n<h2 class=\"connexite-doc-h2\">Node<\/h2>\n<p>data<\/p>\n<h2 class=\"connexite-doc-h2\">Mib files<\/h2>\n<p>TNPL_private_2.1.89(interface_ddm).mib<\/p>\n<h2 class=\"connexite-doc-h2\">Alarm oid<\/h2>\n<p>1, 3, 6, 1, 4, 1, 37831, 101, 110, 1<\/p>\n<h2 class=\"connexite-doc-h2\">Warning oid<\/h2>\n<p>1, 3, 6, 1, 4, 1, 37831, 101, 110, 2<\/p>\n<h2 class=\"connexite-doc-h2\">Ifindex oid<\/h2>\n<p>1, 3, 6, 1, 4, 1, 37831, 100, 30, 2, 1, 1<\/p>\n<h2 class=\"connexite-doc-h2\">Information oid<\/h2>\n<p>1, 3, 6, 1, 4, 1, 37831, 100, 30, 2, 1, 2<\/p>\n<h2 class=\"connexite-doc-h2\">Display Port Optical Module DDM Information<\/h2>\n<ul class=\"connexite-doc-list\">\n<li>Show interface optical-transceiver information<\/li>\n<\/ul>\n<p>Display the information of the optical\/copper module inserted in the optical port.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show interface {IFNAME |} optical-transceiver {info |}<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">If no interface-id is specified, the module information of all ports will be displayed. If info is not specified, the DDM information of the port module will be displayed, and if specified, the complete module information (basic information, alarm information, manufacturer information) will be displayed. DDM information display elements are as follows:<\/p>\n<h2 class=\"connexite-doc-h2\">Temp<\/h2>\n<p>The temperature of the module, in \u00b0C, accurate to 1\u00b0C.<\/p>\n<h2 class=\"connexite-doc-h2\">Voltage<\/h2>\n<p>The voltage of the module, the unit is V, accurate to 0.01V.<\/p>\n<h2 class=\"connexite-doc-h2\">Bias<\/h2>\n<p>The current of the module, in mA, accurate to 0.01mA.<\/p>\n<h2 class=\"connexite-doc-h2\">RX power<\/h2>\n<p>The received optical power of the module, in dBm, accurate to 0.01dBM.<\/p>\n<h2 class=\"connexite-doc-h2\">TX power<\/h2>\n<p>The transmit optical power of the module, in dBm, accurate to 0.01dBM.<\/p>\n<h2 class=\"connexite-doc-h2\">OK<\/h2>\n<p>normal, no intervention required.<\/p>\n<h2 class=\"connexite-doc-h2\">WARN<\/h2>\n<p>Alarm, indicating that the allowable range of the device is exceeded, and attention should be paid to.<\/p>\n<h2 class=\"connexite-doc-h2\">ALARM<\/h2>\n<p>Abnormal, indicating that the device&#039;s allowable state is seriously exceeded and immediate intervention is required.<\/p>\n<h2 class=\"connexite-doc-h2\">ABSENT<\/h2>\n<p>Absent.<\/p>\n<h2 class=\"connexite-doc-h2\">NA<\/h2>\n<p>Port not supported\/module not supported.<\/p>\n<h2 class=\"connexite-doc-h2\">TIMEOUT<\/h2>\n<p>Time out.<\/p>\n<h2 class=\"connexite-doc-h2\">ERR<\/h2>\n<p>Mistake.<\/p>\n<h2 class=\"connexite-doc-h2\">Display all port module DDM information<\/h2>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show interface optical-transceiver<\/code><\/pre>\n<h2 class=\"connexite-doc-h2\">Port Temp Voltage Bias RX power TX power<\/h2>\n<p>[C] [V] [mA] [dBm] [dBm] &#8212;&#8212;- &#8212;&#8212;&#8212;- &#8212;&#8212;&#8212;&#8212;- &#8212;&#8212;&#8212;&#8212;- &#8212;&#8212;&#8212;&#8212;- &#8212;&#8212;&#8212;&#8212;- GiE0\/9 42(OK) 3.20(OK) 32.34(OK) -3.98(OK) 1.64(OK) GiE0\/10 ABSENT ABSENT ABSENT ABSENT ABSENT GiE0\/11 ABSENT ABSENT ABSENT ABSENT ABSENT GiE0\/12 ABSENT ABSENT ABSENT ABSENT ABSENT<\/p>\n<ul class=\"connexite-doc-list\">\n<li>Display the overall information of the port optical module\/copper module<\/li>\n<\/ul>\n<p>Error message: Key Word Transceiver absent! Failed to get information, maybe the module is not in place. Get transceiver info timeout! Timeout to get information, need to get it again. Port doesn&#039;t support get module info! The port does not support getting module information. Basic Information Key Word<\/p>\n<h2 class=\"connexite-doc-h2\">Transceiver Type<\/h2>\n<p>module type.<\/p>\n<h2 class=\"connexite-doc-h2\">Connector Type<\/h2>\n<p>Interface Type. Wavelength(nm) Wavelength.<\/p>\n<h2 class=\"connexite-doc-h2\">Link Length<\/h2>\n<p>Supported link lengths.<\/p>\n<h2 class=\"connexite-doc-h2\">Digital Diagnostic Monitoring<\/h2>\n<p>Whether to support DDM function.<\/p>\n<h2 class=\"connexite-doc-h2\">Vendor Serial Number<\/h2>\n<p>Module serial number. Warning Information Key Word<\/p>\n<h2 class=\"connexite-doc-h2\">RX Channel loss of signal<\/h2>\n<p>Received signal loss.<\/p>\n<h2 class=\"connexite-doc-h2\">RX Channel power high<\/h2>\n<p>High received optical power alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">RX Channel power low<\/h2>\n<p>Low received optical power alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">TX Channel fault<\/h2>\n<p>Send Error.<\/p>\n<h2 class=\"connexite-doc-h2\">TX Channel bias high<\/h2>\n<p>Bias current high alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">TX Channel bias low<\/h2>\n<p>Bias current low alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">TX Channel power high<\/h2>\n<p>Sending high optical power alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">TX Channel power low<\/h2>\n<p>Sending low optical power alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">Temperature high<\/h2>\n<p>High temperature alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">Temperature low<\/h2>\n<p>Low temperature alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">Voltage high<\/h2>\n<p>High voltage alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">Voltage low<\/h2>\n<p>Low voltage alarm.<\/p>\n<h2 class=\"connexite-doc-h2\">None<\/h2>\n<p>no alarm. This module doesn&#039;t support getting alarm! The module does not support getting alarm information. Manufacturer information Key Word<\/p>\n<h2 class=\"connexite-doc-h2\">Vendor Name<\/h2>\n<p>Manufacturer Names.<\/p>\n<h2 class=\"connexite-doc-h2\">Vendor OUI<\/h2>\n<p>Manufacturer OUI.<\/p>\n<h2 class=\"connexite-doc-h2\">Vendor Part Number<\/h2>\n<p>Manufacturer part number.<\/p>\n<h2 class=\"connexite-doc-h2\">Vendor Revision<\/h2>\n<p>Manufacturer version number.<\/p>\n<h2 class=\"connexite-doc-h2\">Manufacturing Date<\/h2>\n<p>Production Date.<\/p>\n<h2 class=\"connexite-doc-h2\">Encoding<\/h2>\n<p>encoding type.<\/p>\n<h2 class=\"connexite-doc-h2\">Displays overall information about a single port module<\/h2>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show interface gigabitEthernet0\/9 optical-transceiver info<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">################################################### gigabitEthernet0\/9 +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver base information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver Type : 1000BASE-ZX-SFP | |Connector Type : LC | |Wavelength(nm) : 1550 | |Link Length : | | SMF fiber | | &#8212; 80km | |Digital Diagnostic Monitoring : YES | |Vendor Serial Number : WT1703230031 | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver current alarm information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |None | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver vendor information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Vendor Name : OEM | |Vendor OUI : 000000 | |Vendor Part Number : SFP-GE-ZX-SM1550 | |Vendor Revision : V2 | |Manufacturing Date : 2017-03-25 | |Encoding : 8B10B | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH#<\/code><\/pre>\n<h2 class=\"connexite-doc-h2\">Displays overall information for all port blocks<\/h2>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show interface optical-transceiver info<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">################################################### gigabitEthernet0\/9 +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver base information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver Type : 1000BASE-ZX-SFP | |Connector Type : LC | |Wavelength(nm) : 1550 | |Link Length : | | SMF fiber | | &#8212; 80km | |Digital Diagnostic Monitoring : YES | |Vendor Serial Number : WT1703230031 | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver current alarm information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |None | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver vendor information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Vendor Name : OEM | |Vendor OUI : 000000 | |Vendor Part Number : SFP-GE-ZX-SM1550 | |Vendor Revision : V2 | |Manufacturing Date : 2017-03-25 | |Encoding : 8B10B | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ ################################################### gigabitEthernet0\/10 +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver base information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver Type : 1000BASE-GT-SFP | |Connector Type : Unknown or unspecified | |Wavelength(nm) : 16652 | |Link Length : | | Cable Assembly copper | | &#8212; 100m | |Digital Diagnostic Monitoring : NO | |Vendor Serial Number : MTC100046 | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver current alarm information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ This module doesn&#039;t support getting alarm! |This module doesn&#039;t support getting alarm! | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Transceiver vendor information: | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ |Vendor Name : OEM | |Vendor OUI : 000000 | |Vendor Part Number : SFP-T-CBTX | |Vendor Revision : F | |Manufacturing Date : 2014-10-01 | |Encoding : 8B10B | +&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-+ ################################################### gigabitEthernet0\/11 Get result error(Maybe Transceiver absent)! ################################################### gigabitEthernet0\/12 Get result error(Maybe Transceiver absent)!<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH#<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">Display the information of the optical\/copper module inserted in the optical port.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show interface {IFNAME |} optical-transceiver threshold<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">If no IFNAME is specified, the module information of all ports will be displayed. If the threshold is not configured, the own threshold information of the module will be displayed.<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show interface optical-transceiver threshold<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">Interface tengigabitEthernet0\/25: Item High-alarm High-warn Low-warn Low-alarm Temp(Celsius) 100 90 -40 -50 Voltage(V) 3.50 3.47 3.15 3.04 Bias(mA) 15.00 12.00 4.00 5.58 RX power(dBm) 10.25 5.30 -10.22 -12.40 TX power(dBm) 2.100 1.100 -9.100 -11.00<\/p>\n<h2 class=\"connexite-doc-h2\">Dying Gasp<\/h2>\n<p>Dying Gasp is referenced in section 7.1.2.5.3 of ITU-T Recommendation G.991.2 (12\/2003) as the Power Status bit. The networking devices rely on a temporary back-up power supply on a capacitor, that allows for a graceful shutdown and the generation of the dying-gasp message. This temporary power supply is designed to last from 10 to 20 milliseconds to perform these tasks. In addition to the dying-gasp message, the power-down device will also send a trap message to the smmp server.<\/p>\n<h2 class=\"connexite-doc-h2\">Node<\/h2>\n<p>data<\/p>\n<h2 class=\"connexite-doc-h2\">Mib files<\/h2>\n<p>DOT3-OAM-MIB.mib oid 1, 3, 6, 1, 2, 1, 158, 1, 6, 1, 4 value dyingGaspEvent(257)<\/p>\n<ul class=\"connexite-doc-list\">\n<li>Enable dying-gasp<\/li>\n<\/ul>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config)#dying-gasp enable<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config)#no dying-gasp<\/code><\/pre>\n<h2 class=\"connexite-doc-h2\">LOG messages<\/h2>\n<p>For example\uff1a\u201dDevice 00:d0:f8:c8:23:12 power down.\u201d<\/p>\n<h2 class=\"connexite-doc-h2\">Cable Detect<\/h2>\n<p>A cable fault may cause the interface to be in the Down state or the interface rate to be abnormal even though the interface is in the Up state. Users can execute this command to detect whether the cable is faulty and locate the fault point to help solve the cable fault. Please pay attention to the following points when using the cable detection function:<\/p>\n<ul class=\"connexite-doc-list\">\n<li>Only copper interfaces support this command.<\/li>\n<li>When this command is executed, the normal service of the interface may be affected in a short period of time.<\/li>\n<li>When the line length is less than 6 meters, there will be a deviation between the test results and the actual value. The shorter the line, the greater the deviation.<\/li>\n<li>Port Performs Cable Detection Function<\/li>\n<\/ul>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)#cable-detect<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">Perform a cable detection on the port. After 2 seconds, use the show command to view the detection results. Perform a cable test on port g i0 \/1:<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH# configure terminal<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config)#interface gigabitEthernet 0\/1<\/code><\/pre>\n<pre class=\"connexite-doc-command\"><code>SWITCH(config-if)#cable-detect<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">%Please wait for about 2 seconds and execute the show cable-detect command to view the execution results. View cable test results:<\/p>\n<pre class=\"connexite-doc-command\"><code>SWITCH#show cable-detect interface gigabitEthernet 0\/1<\/code><\/pre>\n<p class=\"connexite-doc-command-desc\">Pair A length(meters): 0 Pair B length(meters): 0 Pair C length(meters): 0 Pair D length(meters): 0 Pair A state: OK Pair B state: OK Pair C state: OK Pair D state: OK<\/p>\n<h2 class=\"connexite-doc-h2\">Explain<\/h2>\n<p>Pair X length(meters) Cable length. When there is a fault, it represents the length from the interface to the fault. Unit\uff1ameter<\/p>\n<h2 class=\"connexite-doc-h2\">Pair X state<\/h2>\n<p>Network cable status: OK: Indicates that the line pair is terminated normally. Open: Indicates that the line pair is open. Short: Indicates a short circuit on the pair. Unknown: Other unknown causes of failure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Networking \u203a Switching \u203a Edge \u203a Synapse<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":6349,"menu_order":30,"comment_status":"open","ping_status":"closed","template":"","doc_tag":[115,119,116],"class_list":["post-6379","docs","type-docs","status-publish","hentry","doc_tag-connexite","doc_tag-network","doc_tag-synapse-cli-documentation","no-post-thumbnail"],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/docs\/6379","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/docs"}],"about":[{"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/types\/docs"}],"author":[{"embeddable":true,"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/comments?post=6379"}],"version-history":[{"count":1,"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/docs\/6379\/revisions"}],"predecessor-version":[{"id":6427,"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/docs\/6379\/revisions\/6427"}],"up":[{"embeddable":true,"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/docs\/6349"}],"wp:attachment":[{"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/media?parent=6379"}],"wp:term":[{"taxonomy":"doc_tag","embeddable":true,"href":"https:\/\/docs.connexite.co.uk\/index.php\/wp-json\/wp\/v2\/doc_tag?post=6379"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}