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Index

110

possible, 20

memory card

writing data to, 93

MIBs cannot be obtained from the SNMP

manager, 74

multicast forwarding by IGMP snooping is not

possible, 45

multicast forwarding by MLD snooping is not

possible, 47

neighboring device information cannot be

obtained by the LLDP functionality, 81

neighboring device management functionality

communication failures, 81

network interfaces

communication failures, 24

NTP

communication failures, 82

obtaining

failure information, 91, 92

operation terminal problems, 17
overview, 1

port is in inactivate status by the IEEE

802.3ah/UDLD functionality, 83

port mirroring

failures, 85

power saving functionality

failures, 86

power saving scheduling is disabled, 87
problems occurring while saving files, 21
problems related to the support of a long life

solution, 89

QoS configurations

communication failures, 84

restoring data by using the restore operation

command is not possible, 23

saving or restoring the binding database is not

possible, 23

sFlow packets cannot be sent to the collector,

sFlow samples cannot be sent to the collector,

show tech-support command

detailed display contents, 102

SNMP

communication failures, 74

Switch failures

troubleshooting, 9

Switch faults

procedure for handling, 10

testing

line, 96

time information cannot be obtained from the

NTP server, 82

transferring

files via FTP, 94

traps cannot be received by the SNMP manager,

troubleshooting

functional failures during operation, 15
sFlow statistics (flow statistics) functionality,

Switch failures, 9

update by using the ppupdate operation

command is not possible, 23

when SNMPv3 cannot be used, 75
writing

data to a memory card, 93

Содержание AX2500S

Страница 1: ...AX2500S Troubleshooting Guide AX25S T001X 60...

Страница 2: ...s a registered trademark of Microsoft Corporation in the United States and other countries RSA and RSA SecurID are trademarks or registered trademarks of RSA Security Inc in the United States and othe...

Страница 3: ...functionality is used Actions to be taken when the master node is supported were added Actions to be taken when the Spanning Tree functionality is used with the Ring Protocol were added Descriptions...

Страница 4: ...he Displayed information In addition to the above changes minor editorial corrections were made Edition 2 Summary of amendments Location and title Changes A description of AX2530S 24S4X switches was a...

Страница 5: ...irect attach cable problems 24S4X This subsection was added Problems related to the support regarding long life solutions This subsection was added Detailed display contents of the show tech support c...

Страница 6: ......

Страница 7: ...S 24T4X switches 48T This description applies to AX2530S 48T switches 48T2X This description applies to AX2530S 48T2X switches 24S4X This description applies to AX2530S 24S4X switches 10G models The d...

Страница 8: ...s switch Abbreviations used in the manual AC Alternating Current ACK ACKnowledge ADSL Asymmetric Digital Subscriber Line ALG Application Level Gateway ANSI American National Standards Institute ARP Ad...

Страница 9: ...Domain Name System DR Designated Router DSAP Destination Service Access Point DSCP Differentiated Services Code Point DTE Data Terminal Equipment DVMRP Distance Vector Multicast Routing Protocol E Mai...

Страница 10: ...5 MDI Medium Dependent Interface MDI X Medium Dependent Interface crossover MEP Maintenance association End Point MIB Management Information Base MIP Maintenance domain Intermediate Point MRU Maximum...

Страница 11: ...ormation Protocol RIPng Routing Information Protocol next generation RMON Remote Network Monitoring MIB RPF Reverse Path Forwarding RQ ReQuest RSTP Rapid Spanning Tree Protocol SA Source Address SD Se...

Страница 12: ...ED Weighted Random Early Detection WS Work Station WWW World Wide Web XFP 10 gigabit small Form factor Pluggable Conventions The terms Switch and switch The term Switch upper case S is an abbreviation...

Страница 13: ...Ignoring instructions preceded by this indication and using the Switch incorrectly could result in death or serious injury to yourself and others Ignoring instructions preceded by this indication and...

Страница 14: ...button do not use anything with a fragile tip or anything that might become caught in the Switch such as a pin or paper clip When pressing the RESET button do not use anything with a fragile tip or a...

Страница 15: ...to forget that the cable is there and to place something heavy on it Use the supplied or a designated power cable Using another cable could result in fire or electric shock In addition do not use the...

Страница 16: ...Safety Information Safety 4 Do not remove the Switch cover Do not remove the Switch cover Doing so could result in electric shock The following label is attached to a Switch...

Страница 17: ...or objects near the ventilation slots Cooling fan units are mounted in AX2530S 24T4X AX2530S 48T AX2530S 48T2X AX2530S 24S4X switches and EPUs Do not allow hair or other objects near the ventilation...

Страница 18: ...ied to the Switch from an EPU the Switch cannot be turned off by simply setting the power switch on the Switch to OFF To turn off the Switch set the power switch of both the Switch and the power suppl...

Страница 19: ...l the Switch in a dusty or humid location Doing so could result in fire or electric shock Condensation might form on the surfaces and the inside of the Switch if it is moved from a cold location to a...

Страница 20: ...y module for an EPU is not installed If you use the Switch without attaching the blank panel you might be injured by a moving part In addition if foreign objects fall into the Switch the Switch might...

Страница 21: ...esirable environment Using the switch in the following locations might shorten the life of the switch or result in a switch malfunction An area with salty air such as the coast An area where corrosive...

Страница 22: ...y unit is being used for the Switch Handle memory cards and dummy memory cards carefully When installing a memory card and a dummy memory card do not force the card When removing a memory card do not...

Страница 23: ...Switch might fail AX2530S 24T4X Supported ports 25 to 28 AX2530S 24S4X Supported ports 25 to 28 AX2530S 48T2X Supported ports 51 to 52 Make sure that you use a valid combination for the transceiver a...

Страница 24: ...e ferrule tip Do not apply excessive pressure when cleaning Doing so might damage the ferrule tip Rotate the optical connector cleaner stick clockwise only Rotating the cleaner alternately clockwise a...

Страница 25: ...nding database is not possible 23 3 4 Network interface communication failures 24 3 4 1 Ethernet port cannot be connected 24 3 4 2 Actions to be taken for 10BASE T 100BASE TX 1000BASE T problems 25 3...

Страница 26: ...obtained from the NTP server 82 3 14 Communication failures in the IEEE 802 3ah UDLD functionality 83 3 14 1 Port is in inactivate status by the IEEE 802 3ah UDLD functionality 83 3 15 Communication...

Страница 27: ...iew This chapter provides an overview of failure analysis 1 1 Overview of analyzing failures 1 2 Overview of analyzing failures of all or part of the Switch 1 3 Overview of analyzing failures of funct...

Страница 28: ...eries switch When failure analysis requires looking at the actual Switch do the analysis according to 1 2 Overview of analyzing failures of all or part of the Switch When failure analysis requires log...

Страница 29: ...dy startup Blinking green at long intervals LED operation OFF setting Lit in orange Initial state at power up Blinking red Partial failure in the device Lit in red Fatal failure in the device operatio...

Страница 30: ...at power up Off Link failure or block when the green ST1 LED is lit 10 RESET Button non lockin g Manual reset button of the Switch 1 Restarts the device When pressed continuously until all LEDs on th...

Страница 31: ...nnot be saved in the startup configuration file Copying data to a memory card not possible 3 3 2 Copying or writing information to a memory card is not possible Copying data to the RAMDISK not possibl...

Страница 32: ...n not possible 3 6 1 Communication is not possible or is disconnected IP addresses cannot be assigned by the DHCP server 3 6 2 Communication failures occurring when the DHCP server is used IPv6 networ...

Страница 33: ...tained by the LLDP functionality NTP communication failures 3 13 NTP communication failures Communication failures when the IEEE 802 3ah UDLD functionality is used Port in inactivate status 3 14 1 Por...

Страница 34: ...1 Overview 8...

Страница 35: ...9 2 Troubleshooting Switch Failures This chapter describes how to take actions when a failure occurs on a Switch 2 1 Procedure for handling Switch faults...

Страница 36: ...restart the Switch and then check whether there are any problems in the environment 1 Turn the Switch off and then on again to restart the Switch 2 If you can restart the Switch execute the show loggi...

Страница 37: ...LED indications of the Switch and EPU show no abnormality but the device administrator command displays EPU notconnect Make sure that the cable is properly connected between the Switch and EPU If the...

Страница 38: ...ower unit hardware failures No Problem Action 1 The power switch of the EPU is off Turn the power switch on 2 The power cable of the EPU is not correctly connected to the Switch 1 Turn the power switc...

Страница 39: ...ule 2 1 3 Replacing the Switch and optional modules The procedure to replace the Switch and optional modules is described in the Hardware Instruction Manual Follow the instructions in the manual Optio...

Страница 40: ...2 Troubleshooting Switch Failures 14...

Страница 41: ...nication failures 3 8 Layer 2 authentication communication failures 3 9 Communication failures in the high reliability functionality based on a redundant configuration 3 10 SNMP communication failures...

Страница 42: ...can log in but does not know the password for the enable operation command take the following steps 1 Restart the Switch and then press and hold down Ctrl N until login is displayed on the console By...

Страница 43: ...accepted Perform the following procedure 1 Data transmission might have been interrupted by XON XOFF flow control End the interruption by pressing Ctrl Q If the Switch still does not accept entry from...

Страница 44: ...era Term Pro to log in but unexpected characters are displayed during login Negotiation with the communication software might not have been performed correctly See No 3 Issue a break signal by pressin...

Страница 45: ...terminal is waiting for user ID and password entry or if a login attempt has failed If such terminals are present finish the communication software of those terminals 5 Check if there was any event t...

Страница 46: ...esponse timeout value in seconds x set number of resend attempts 1 x set number of RADIUS servers If the time increases significantly an application on a remote terminal such as Telnet might have term...

Страница 47: ...flash operation command in the manual Operation Command Reference 2 If a message other than Flash format complete is displayed the file system might be corrupted 3 3 2 Copying or writing information t...

Страница 48: ...information to the RAMDISK and action to take No Items to check and commands Items to check 1 Check the response message to the command Perform the following procedure 1 Make sure the specified file e...

Страница 49: ...name of the Switch refer to the Model value displayed by using the show version operation command If no software is specified for the backup operation command no software must be specified for the re...

Страница 50: ...f the link aggregation this is a normal operating status Do not activate the port by using the activate operation command Use the show channel group operation command with the detail parameter to chec...

Страница 51: ...utdown configuration command to activate the target port 3 4 2 Actions to be taken for 10BASE T 100BASE TX 1000BASE T problems If a 10BASE T 100BASE TX 1000BASE T problem occurs use the procedure belo...

Страница 52: ...d the automatic MDIX functionality is disabled for the target port Check the cable length For the cable length see the Hardware Instruction Manual Check whether the cables are connected correctly For...

Страница 53: ...Items to check Cause Action 1 Use the show interfaces operation command to display the failure statistics and check whether there is a count for the item shown below for the target line If there is a...

Страница 54: ...aces operation command and take the action described in Action For the test types to be specified see 5 1 Testing a line 3 Use the show interfaces operation command to display the failure statistics a...

Страница 55: ...s 10G models No Items to check Cause Action 1 Use the show interfaces operation command to display the failure statistics and check whether there is a count for the item shown below for the target lin...

Страница 56: ...ical level is correct Perform a line test on the Switch and make sure that the functionality of the receiving side has no problem Check the results of the no test interfaces operation command and take...

Страница 57: ...tion Manual 3 Use the show interfaces operation command to display the failure statistics and check whether there is a count for the item shown below for the target port If there is a count see the Ca...

Страница 58: ...the status of each port displayed for Status If all ports of the link aggregation group have gone down the link aggregation group also goes down Detached The port went down or is reserved a port spee...

Страница 59: ...he default VLAN is set in allowed vlan for trunk ports The port is specified as a mirror port b For protocol VLANs When you are using a protocol VLAN execute the show vlan operation command and make s...

Страница 60: ...make sure the port status is Up If the status is Down see 3 4 Network interface communication failures Make sure the port status is Forwarding If it is Blocking the cause is indicated in parentheses...

Страница 61: ...d for Type See 3 5 5 Multicast forwarding by IGMP snooping is not possible and 3 5 6 Multicast forwarding by MLD snooping is not possible When Dot1x is displayed for Type See 3 8 1 Communication failu...

Страница 62: ...nk system sml domain system sml id If Ring Protocol and Multiple Spanning Tree are used together go to No 8 Check whether the number of the PVST instances is within the capacity limits 2 Execute the s...

Страница 63: ...efined in the network configuration If they are different from the network configuration check the status of the neighboring devices 6 Check whether the value for the maximum number of Spanning Tree P...

Страница 64: ...or Oper State go to No 2 If a hyphen is displayed for Oper State required items for using the Ring Protocol have not been configured Check the configuration If disable is displayed for Oper State the...

Страница 65: ...lan detail operation command to check the state of the VLAN used for the Ring Protocol and the VLAN port states If there is no anomaly in the states of the VLAN and its ports go to No 8 In addition to...

Страница 66: ...take when a DHCP client terminal cannot establish communication No Items to check and commands Action 1 Use the show ip dhcp snooping binding operation command to check whether the IP address and MAC...

Страница 67: ...se If It was not able to store binding database in flash has been recorded use the following procedure to change the save location to a memory card MC 1 Use the ip dhcp snooping database url configura...

Страница 68: ...e show logging operation command to check the operation log for saving the binding database If It was not able to store binding database in mc retry reason has been recorded the database could not be...

Страница 69: ...y card and memory card slot for dust If there is dust wipe it off with a dry cloth and then insert the memory card into the slot again After inserting the memory card execute the format mc operation c...

Страница 70: ...cp snooping database url mc is set go to No 3 If ip dhcp snooping database url mc is not set set the ip dhcp snooping database url mc saved file name configuration command 3 Use the show logging opera...

Страница 71: ...y card itself might be corrupted Clear the IP addresses on the DHCP client terminal In Windows in the Command Prompt window execute ipconfig release and then ipconfig renew 3 5 5 Multicast forwarding...

Страница 72: ...messages is displayed 1 If the IGMP querier exists the IP address of the IGMP querier is displayed IGMP querying system 192 168 11 20 2 If the IGMP querier does not exist nothing is displayed for IGM...

Страница 73: ...rding by MLD snooping is not possible If multicast forwarding is impossible when MLD snooping is used use the following analysis flowchart to determine the problem and isolate the cause Figure 3 4 Ana...

Страница 74: ...the sender IP address has been set by using the ipv6 mld snooping source configuration command MLD querying system 3 If the sender IP address has not been set by the ipv6 mld snooping source configura...

Страница 75: ...ration and network configuration before and after the change to uncover any cause that could disable communication This subsection describes the procedure for isolating the fault location to determine...

Страница 76: ...terface operation command to check whether the status of the interface with the target neighboring device is Up or Down 3 If the status of the target interface is Down see 3 4 Network interface commun...

Страница 77: ...d to check the status of address resolution whether ARP entry information exists between the Switch and the neighboring device 3 If the address with the neighboring device has been resolved ARP entry...

Страница 78: ...f you have checked the client and server settings such as network card settings and cable connections and concluded that cause 3 applies for example the configuration and network configuration are cor...

Страница 79: ...rectly connected check the hub and cable connections d Checking the filtering and QoS control configuration information If communication is not possible even when there is no physical failure on the S...

Страница 80: ...disable communication This subsection describes the procedure for isolating the fault location to determine the cause of a problem and applies mainly to cause 3 failures For example IPv6 communicatio...

Страница 81: ...3 Identifying the range for a failure from the Switch If a failure has not occurred on the Switch a failure might have occurred somewhere on the route between the Switch and the remote devices To ide...

Страница 82: ...entical Alternatively see 3 4 Network interface communication failures 6 Checking the default gateway information You need to check the default gateway information obtained by the Switch if a communic...

Страница 83: ...RxInvalid or RxLenErr an invalid EAPOL frame has been received from the terminal in which case the event is logged Use the show dot1x logging operation command to view the log The Invalid EAPOL frame...

Страница 84: ...ayed Authentication failed for either of the reasons shown below Check for problems 1 The user ID or password has not been registered on the authentication server 2 The user ID or password is entered...

Страница 85: ...DIUS attribute of the RADIUS server Reason Invalid Tunnel Private Group ID Attribute Dynamic allocation has failed because an invalid value is set for the Tunnel Private Group ID attribute for the RAD...

Страница 86: ...reful of the following when using a VLAN name configured using the name configuration command as a VLAN after RADIUS authentication Specify a unique VLAN name If the same VLAN name is used for two or...

Страница 87: ...ip address configuration command or URL redirection has been enabled by the web authentication redirect enable configuration command If URL redirection is enabled make sure the IP address is set for a...

Страница 88: ...erver Fixed VLAN mode Check whether the RADIUS server s VLAN ID indicated by NAS Identifier matches the VLAN ID to which the terminal to be authenticated belongs Dynamic VLAN mode Correct the configur...

Страница 89: ...down status nor shut down For other cases check the Web authentication configuration 1 Check the following configuration command settings 1 When both the switchport mac vlan and no switchport mac auto...

Страница 90: ...ses for the following VLAN interfaces are set correctly Pre authentication VLAN Post authentication VLAN 3 DHCP server setting When the DHCP server is used see 3 6 2 Communication failures occurring w...

Страница 91: ...ck configuration command is set make sure the MAC address and the VLAN ID to which the terminal to be authenticated belongs are registered Dynamic VLAN mode Make sure the MAC address and the post auth...

Страница 92: ...an authentication IPv4 access list is set When both a standard access list and an authentication IPv4 access list are set for an authenticating port make sure the filtering conditions in the authenti...

Страница 93: ...t The VLAN ID for the RADIUS server has been set by vlan mac based The VLAN ID of the authenticating port does not match switchport mac dot1q vlan 2 When both the switchport mac vlan and no switchport...

Страница 94: ...nterface is set correctly Dynamic VLAN mode Make sure the IP addresses for the following VLAN interfaces are set correctly Pre authentication VLAN Post authentication VLAN 3 Filtering setting Certain...

Страница 95: ...Use the show wol authentication user operation command to check whether user information is registered If the user is not registered use the set wol authentication user operation command to register...

Страница 96: ...the startup check will be performed and then use the set wol device ip operation command to add the IP address information After the changes use the commit wol device operation command to apply the in...

Страница 97: ...he link debounce setting for the target port If the link debounce configuration command has not been set that is the default of 2000 milliseconds is used for operation or if a value greater than 2000...

Страница 98: ...cases go to No 9 9 Use the operation command show switchport backup mac address table update statistics to make sure the value displayed for Transmission over flows has been incremented If the value...

Страница 99: ...the peer link ports Perform the following procedure for recovery 1 See 3 4 3 Actions to be taken for 100BASE FX 24S4X 1000BASE X problems 3 4 4 Actions to be taken for 10GBASE R problems 10G models a...

Страница 100: ...uration command to set information about the SNMP manager show running config ip access list standard SNMPMNG permit host 128 1 1 2 snmp server community NETWORK ro SNMPMNG When using SNMPv3 Execute t...

Страница 101: ...n has not been set correctly execute the following configuration commands to set the information about SNMP and traps snmp server engineID local snmp server view snmp server user snmp server group snm...

Страница 102: ...2 Using an operation command to check the operation Execute the show sflow operation command a few times to display the sFlow statistics and check whether the sFlow statistics functionality is running...

Страница 103: ...guration example 1 config show sflow destination 192 1 1 1 6455 Collector information must be set correctly sflow sample 2048 config Make sure that the sampling interval has been set If the sampling i...

Страница 104: ...ss of an sFlow packet has been set by using the sflow source command make sure that the IP address has been assigned to the port of the Switch Figure 3 13 Configuration example 4 config show sflow des...

Страница 105: ...er packets are forwarded Figure 3 15 Example of the port status show interfaces gigabitethernet 0 5 Date 2010 08 04 15 02 35 UTC Port 0 5 active up 1000BASE T full auto 00eb f103 0102 Time since last...

Страница 106: ...3 Troubleshooting Functional Failures During Operation 80 config...

Страница 107: ...evice is connected If the Tx count has been incremented but the Rx count has not check No 1 through No 3 on the neighboring device If the Tx count has also been incremented on the neighboring device t...

Страница 108: ...w clock operation command to make sure the time zone is set If the time zone is set in the information displayed by the command go to No 2 If the time zone is not set in the information displayed by t...

Страница 109: ...gs value has not been incremented go to No 4 4 Make sure the Switch is directly connected to the partner switch If a media converter or hub is connected between switches review and correct the network...

Страница 110: ...access list applied to the interface the number of packets that match the filtering conditions and the number of packets discarded by a filter entry for implicit discard 3 Compare the filtering condit...

Страница 111: ...mirroring failures 3 16 1 BPDUs are sent from a mirror port To stop sending BPDUs from a mirror port when the port mirroring functionality is enabled use the spanning tree bpdufilter configuration com...

Страница 112: ...When the status of the ports changes to link up the LEDs do not light with the normal brightness automatic operation is disabled Use the show system operation command to check the information displaye...

Страница 113: ...change the setting to action enable and save the setting 2 After the sleep period ends the Switch does not run with the specified configuration When the Switch enters sleep mode on a schedule any con...

Страница 114: ...k and commands Action 6 When the wake up option is set linking up the port configured to detect link up fails to cancel sleep mode 1 Make sure that the wake up option is configured 2 Make sure that th...

Страница 115: ...wing problems might have occurred 1 The Switch was restarted for example by turning the power off and on while temperature history information was being saved to the internal flash memory which result...

Страница 116: ...3 Troubleshooting Functional Failures During Operation 90...

Страница 117: ...91 4 Obtaining Failure Information This chapter describes how to obtain failure information 4 1 Obtaining failure information 4 2 Writing data to a memory card 4 3 Transferring files via FTP...

Страница 118: ...ows you to save the collected information on the RAMDISK in text format and then write the information to a memory card or transfer the information via FTP Figure 4 1 Saving information to the RAMDISK...

Страница 119: ...capacity of the source file showtech txt show ramdisk file Date 2010 08 06 17 38 20 UTC File Date Size Name 2010 08 06 17 37 1 265 showtech txt Use the show mc operation command to check available spa...

Страница 120: ...ory on a PC with a Switch IP address of 192 168 0 1 Figure 4 3 Transferring files via FTP Log in to the Switch via FTP from an FTP client PC C TEMP ftp 192 168 0 1 Log in to the Switch from an FTP cli...

Страница 121: ...95 5 Line Testing 5 1 Testing a line...

Страница 122: ...r the RJ45 connector and transceiver Loop connector loopback test Loop connector Switch including the RJ45 connector and transceiver The following table shows the fault locations suspected from the re...

Страница 123: ...abitethernet 0 2 internal interval 5 pattern 1 length 100 no test interfaces gigabitethernet 0 2 Date 2010 08 06 04 07 39 UTC Interface type 100BASE TX Test count 13 Send OK 13 Send NG 0 Receive OK 13...

Страница 124: ...Note that if the loop connecter is not connected or if the connected loop connector is inappropriate for the port the test might provide invalid results For 10BASE T 100BASE TX and 1000BASE T SFP port...

Страница 125: ...rocedure Figure 5 4 Twisted pair cable 2 As shown in the following figure insert the cables into the connector and crimp them with a crimping tool Figure 5 5 Overview of a 10BASE T 100BASE TX 1000BASE...

Страница 126: ...5 Line Testing 100...

Страница 127: ...101 Appendix A Detailed Display Contents of the show tech support Command...

Страница 128: ...information Note that some information might not appear depending on the software version Table A 1 Displayed information No Command displayed Description No parameter specified layer 2 specified 1 s...

Страница 129: ...el Y Y 26 show cpu days hours CPU usage in days or hours Y Y 27 show cpu minutes seconds CPU usage in minutes or seconds Y Y 28 show memory summary Memory usage of the device Y Y 29 show interfaces de...

Страница 130: ...s DHCP snooping statistics Y Y 51 show ip arp inspection statistics Dynamic ARP inspection statistics Y Y 52 show igmp snooping IGMP snooping information Y Y 53 show igmp snooping group IGMP snooping...

Страница 131: ...ion detail Detailed information on users authenticated by Web authentication Y Y 76 show web authentication login summary port Information on users authenticated by Web authentication by port Y Y 77 s...

Страница 132: ...Entries registered in the internal DB for Secure Wake on LAN user authentication Y Y 95 show wol device name edit Entries registered or changed in the internal DB for registering terminals that send t...

Страница 133: ...m remote mep detail CFM remote MEP details Y Y 115 show cfm fault Information on faults detected by CFM continuity checks Y Y 116 show cfm fault detail Details on faults detected by CFM continuity che...

Страница 134: ...ion for software updates Y Y 130 show on api webauth html file user OAN User list information related to replacement HTML files for the Web authentication login page Y Y 131 show on api energy saving...

Страница 135: ...ssible 21 copying or writing information to the RAMDISK is not possible 22 counter samples cannot be sent to the collector 79 creating loop connectors 98 D dates are not displayed correctly in tempera...

Страница 136: ...ures 86 power saving scheduling is disabled 87 problems occurring while saving files 21 problems related to the support of a long life solution 89 Q QoS configurations communication failures 84 R rest...

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