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You can use "tail -f /tmp/log/messagemessages" to tail display the log messagemessages.
You can change set the syslog local-file location to disk. The log file name is "messagemessages" which is in the directory of "/var/log"
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You can use "tail -f /var/log/messagemessages" to tail show the log messagemessages.
Enable Important Debugs
Enable debug interface：
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##Global Interface traceoptions. admin@XorPlus# set interface traceoptions flag ? Possible completions: <[Enter]> Execute this command all Configure all tracing config Configure configuration tracing ethernet-switching-options Configure ethernet-switching-options tracing mlag-trace Configure mlag event tracing neighbor-event ConfigureExecute neighborthis eventcommand tracing packets Configureall received or sent packets event tracing port-security Configure port security tracing raw-packet Configure receive raw packet tracing route-event Configure route event tracing static-ethernet-switching Configure static-ethernet-switching tracing admin@XorPlus#Configure setall interfacetracing traceoptions flag config ? Possible completions: <[Enter]> Execute this command disable Disable tracing admin@XorPlus# set interface traceoptions flag config disable false admin@XorPlus# commit Commit OK. Save done. admin@XorPlus#Configure configuration admin@XorPlus#tracing set interface traceoptions line-card ? Possible completions: <[Enter]> Execute this command statistics Configure line card statistic module trace trace-level Configure line card trace level trace-type Configure line card trace type admin@XorPlus# set interface traceoptions line-card trace-level all disable false admin@XorPlus# commit Commit OK. ##Per physical interface traceoptions. admin@Xorplus# set interface gigabit-ethernet ge-1/1/1 traceoptions flag Possible completions: <[Enter]> ethernet-switching-options Configure ethernet-switching-options tracing neighbor-event Configure neighbor event tracing packets Configure received or sent packets event tracing port-security Execute this command allConfigure port security tracing raw-packet Configure receivedreceive andraw sentpacket packets event tracing messageroute-inevent Configure receivedroute packets event tracing messagestatic-ethernet-outswitching Configure static-ethernet-switching tracing timer Configure sent packets event tracing admin@Xorplus# set interface gigabit-ethernet ge-1/1/1 traceoptions flag message-in disable false admin@XorPlus# commit CommitConfigure OK.timer tracing ##Peradmin@XorPlus# aggregateset interface traceoptions offlag config mlag. admin@Xorplus# set<[Enter]> interface aggregate-ethernet ae1 traceoptions mlag flag Possible completions: <[Enter]> Execute this command disable Execute this command all Disable configuration tracing admin@XorPlus# set interface traceoptions flag config disable false admin@XorPlus# commit Commit ConfigureOK. allSave thedone. mlagadmin@XorPlus# tracing admin@XorPlus# set eventinterface traceoptions line-card ? Possible completions: <[Enter]> Configure mlag event tracing Execute this hellocommand statistic Configure mlagline hellocard tracingstatistic module trace igmp trace-level Configure line card trace level Configure mlag igmp tracing mac-sync trace-type Configure mlagline mac-synccard tracingtrace type packetadmin@XorPlus# set interface traceoptions line-card trace-level all disable false admin@XorPlus# commit Commit OK. |
Enable debug of protocals:
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admin@Xorplus# set protocols Possible completions: <[Enter]> Configure mlag packet tracing state-change Execute this command arp Configure mlag state change tracing stp Configure ARP bgp Configure mlag stp tracing timer Configure BGP inter-domain routing dhcp Configure mlag timer tracing admin@Xorplus# set interface aggregate-ethernet ae1 traceoptions mlag flag hello disable false admin@XorPlus# commit Commit OK. |
Enable debug of protocals:
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admin@Xorplus# set protocols Possible completions: <[Enter]>Dynamic Host Configuration Protocol dot1x Execute this802.1x commandprotocol arpigmp Configure ARPthe IGMP protocol bfd igmp-snooping Configure the igmp snooping lacp Configure BFD bgp Link Aggregation Control Protocol lldp Configure BGP inter-domain routing dhcp Link Layer Discovery Protocol 802.1AB Dynamicmlag Host Configuration Protocol dot1x Configure MLAG neighbour 802.1x protocol igmp Configure Neighbour Discovery Protocol netconf Configure the IGMP protocol igmp-snooping Configure theNETCONF igmp snooping ospf lacp Configure the LinkOSPF Aggregationprotocol Control Protocol ovsdb lldp Enable OVSDB Link Layer Discoverypim Protocol 802.1AB mpls PIM protocol Configuresflow MPLS neighbour Configure Neighboursflow Discovery Protocol snmp netconf Configure NETCONFSimple network management ospf4protocol configuration spanning-tree Configure Spanning Tree Configure thestatic OSPF protocol ospf6 Configure static routes udld Configure the OSPFv3 protocol pimsm4 Unidirectional Link Detection Protocol Configure thevrrp IPv4 PIM-SM protocol rip Configure VRRP admin@Xorplus# set protocols bgp traceoption RIPupdates configurationin admin@Xorplus# commit sflowCommit OK Save Done! |
Enable debug of LLDP:
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## LLDP global traceoptions. admin@Xorplus# set protocols lldp traceoptions flag Possible completions: <[Enter]> Configure sflow snmp Execute this command all Simple network management protocol configuration spanning-tree Configure all events and packets tracing configuration Configure Spanning Tree static Configure configuration tracing message-in Configure static routes udld Configure received message tracing message-out Unidirectional Link Detection Protocol Configure vrrpsend message tracing state-change Configure LLDP state Configurechange VRRPtracing admin@Xorplus# set protocols bfdlldp traceoptions flag message-in disable false admin@XorPlus# commit Commit OK. ##LLDP per interface traceoptions. admin@Xorplus# set protocols lldp traceoptions interface ge-1/1/1 flag Possible completions: <[Enter]> Execute this command all Configure all tracingevents and packets configtracing configuration Configure configuration tracing eventmessage-in Configure received message tracing Configure BFDmessage-out session event tracing fsm Configure send message tracing state-change Configure FSM state tracing packet Configure LLDP state change tracing admin@Xorplus# set protocols lldp traceoptions interface ge-1/1/1 flag configuration disable false admin@XorPlus# commit Configure all packet tracing operations raw-packet Commit OK. |
Enable debug of LACP:
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## LACP global traceoptions. admin@Xorplus# set protocols lacp traceoptions flag Possible completions: <[Enter]> Dump raw packets BFD read from or send to socketsExecute this command timer all Configure timer tracing admin@Xorplus# setConfigure protocolsall bfdevents traceoptionsand flagpackets timertracing disable false admin@XorPlus#configuration commit Commit OK. |
Enable debug of LLDP:
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## LLDP global traceoptions. admin@Xorplus# set protocols lldp traceoptions flag Possible completions: <[Enter]>Configure configuration tracing message-in Execute this command Configure allreceived message tracing message-out Configure send message Configuretracing all events andstate-change packets tracing configuration Configure LACP state change Configure configuration tracing tracing admin@Xorplus# set protocols lacp traceoptions flag message-in disable false admin@XorPlus# commit Commit OK. ##LACP per interface traceoptions. admin@Xorplus# set protocols lacp traceoptions Configure received message tracing message-outinterface ge-1/1/1 flag Possible completions: <[Enter]> Configure sendExecute messagethis tracingcommand state-changeall Configure LLDP state change tracing admin@Xorplus# set protocols lldp traceoptionsConfigure flagall message-inevents disableand falsepackets admin@XorPlus#tracing commit Commitconfiguration OK. ##LLDP per interface traceoptions. admin@Xorplus# set protocols lldp traceoptions interface ge-1/1/1 flag Possible completions: Configure configuration <[Enter]>tracing message-in Execute this commandConfigure received message alltracing message-out Configure send message tracing Configure allstate-change events and packets tracing configuration Configure LACP state change tracing admin@Xorplus# Configureset configurationprotocols tracinglacp traceoptions interface message-in ge-1/1/1 flag configuration disable false admin@XorPlus# commit Commit OK. |
Enable debug of UDLD:
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## UDLD global traceoptions. admin@Xorplus# set protocols udld traceoptions Possible completions: <[Enter]> Configure received message tracing message-out Execute this command all Configure send message tracing state-change Configure all LLDPevents stateand changepackets tracing configuration admin@Xorplus# set protocols lldp traceoptions interface ge-1/1/1 flag configuration disable false admin@XorPlus# commit Commit OK. |
Enable debug of LACP:
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## LACP globalConfigure traceoptions.configuration admin@Xorplus#tracing set protocols lacpevent traceoptions flag Possible completions: <[Enter]> Configure event tracing Execute thisinterface command all Interface name for tracing, such as ge-1/1/n Configure all events and packets tracingor te-1/1/n packet configuration Configure configurationthe sending/receiving packets tracing messageraw-inpacket Configure UDLD receivedraw messagepacket tracing messagestate-outchange Configure sendstate messagechange tracing timer state-change Configure LACPUDLD statetimer change tracing admin@Xorplus# set protocols lacpudld traceoptions flag message-inevent disable false admin@XorPlus# commit Commit OK. ##LACP##UDLD per interface traceoptions. admin@Xorplus# set protocols lacpudld traceoptions interface ge-1/1/1 flag Possible completions: <[Enter]> Execute this command all Configure all events and packets tracing configuration Configure configuration tracing message-inevent Configure received message tracingevent tracing packet message-out Configure send messagethe sending/receiving packet tracing stateraw-changepacket Configure LACP udld raw packet tracing state-change change tracing admin@Xorplus# set protocols lacp traceoptions interface ge-1/1/1 flag configuration disable false admin@XorPlus# commit Commit OK. |
Enable debug of UDLD:
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## UDLD globalConfigure traceoptions.state admin@Xorplus#change settracing protocols udld traceoptionstimer Possible completions: <[Enter]> Configure udld Executetimer thistracing commandadmin@Xorplus# set protocols alludld traceoptions interface ge-1/1/1 flag configuration disable false admin@XorPlus# commit Commit OK. |
Enable debug of BGP:
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admin@XorPlus# set protocols bgp traceoption flag ? admin@XorPlus# set protocols bgp traceoption Possible completions: <[Enter]> Configure all events and packets tracing configuration Execute this command bestpath Configure configuration tracing event BGP bestpath evpn Configure event tracing interface EVPN keepalives Interface name for tracing, such as ge-1/1/n or te-1/1/n packet BGP IPv4 neighbor to debug neighbor-events Configure the sending/receiving packets tracing raw-packetBGP Neighbor Events updates Configure UDLD raw packet tracing state-change BGP updates zebra Configure state change tracing timer BGP zebra messages admin@XorPlus# set protocols bgp traceoption updates in admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# |
Enable debug of ospf:
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admin@XorPlus# set protocols Configureospf UDLDtraceoption timerflag tracing? admin@Xorplus#Possible setcompletions: protocols udld traceoptions<[Enter]> event disable false admin@XorPlus# commit Commit OK. ##UDLD per interface traceoptions. admin@Xorplus# set protocols udld traceoptions interface ge-1/1/1 flag Possible completions: <[Enter]> Execute this command ism Execute this command allConfigure tracing of OSPF interface state machine lsa Configure all events and packets tracing configuration Configure tracing of OSPF link state advertisement nsm Configure configuration tracing event Configure tracing of OSPF neighbor state machine packet Configure event tracing packet Configure tracing of OSPF packets Configure the sending/receiving packet tracingzebra raw-packet Configure udldtracing rawof packetzebra tracinginformation admin@XorPlus# state-changeset protocols ospf traceoption packet all detail admin@XorPlus# commit |
Enable debug of stp:
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admin@XorPlus# set protocols spanning-tree traceoptions interface ge-1/1/1 ? Possible completions: Configure<[Enter]> state change tracing timer Execute this command all Configure udld timer tracing admin@Xorplus# set protocols udld traceoptions interface ge-1/1/1 flag configuration disable false admin@XorPlus# commit Commit OK. |
Enable debug of BGP:
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admin@XorPlus# set protocols bgp traceoptions flagConfigure ?all Possibletracing completions: <[Enter]> Execute this command FSM Configure FSM state tracing all Configure all tracing operations configuration Configure configuration tracing damp Configure damp tracing event Configure FSM Event tracing keepalive Configure keepalive packet tracing nexthop-resolution Configure nexthop resolution with RIB tracing notification Configure notification packet tracing notify-snmp Configure notify snmp tracing open Configure open packet tracing packet Configure all packet tracing operations policy Configure policy configuration tracing raw-packet Dump raw packets BGP read from or send to sockets route-refresh Configure route refresh packet tracing timer Configure timers tracing update Configure update packet tracing admin@XorPlus# set protocols bgp traceoptions flag all disable false admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# |
Enable debug of ospf4:
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admin@XorPlus# set protocols ospf4 traceoptions flag ?
Possible completions:
<[Enter]> Execute this command
adjacency-event Configure tracing of adjacency events
all Configure all tracing operations
config Configure tracing of configuration
database-description Configure tracing of database description packets
event Configure tracing of OSPF state machine events
flooding Configure tracing of lsa flooding
hello Configure tracing of hello packets
lsa-ack Configure tracing of LSA acknowledgment packets
lsa-generation Configure tracing of lsa-generation events
lsa-request Configure tracing of LSA request packets
lsa-update Configure tracing of LSA update packets
packets Configure tracing of all OSPF packets
retransmission Configure tracing of lsa-packets retransmission
route Configure tracing of routing information
spt Configure tracing of spt calculations
timer Configure tracing of routing protocol timer processing
admin@XorPlus# set protocols ospf4 traceoptions flag all disable false
admin@XorPlus# commit |
Enable debug of stp:
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admin@XorPlus# set protocols spanning-tree traceoptions interface ge-1/1/1 ?
Possible completions:
<[Enter]> Execute this command
all Configure all tracing operations
bridge-detection-machine Configure bridge detection state machine tracing
configuration Configure configuration tracing
events Configure events tracing
message-in Configure receive message tracing
message-out Configure send message tracing
port-information-machine Configure port information state machine tracing
port-migration-machine Configure port migration state machine tracing
port-receive-machine Configure port receive state machine tracing
port-role-selection-machine Configure port role selection state machine tracing
port-role-transition-machine Configure port role transition state machine tracing
port-state-transition-machine Configure port state transition state machine tracing
port-transmit-machine Configure port transmit state machine tracing
state-machine-variables Configure state machine variables tracing
timers Configure timers tracing
topology-change-machine Configure topology change state machine tracing
admin@XorPlus# set protocols spanning-tree traceoptions interface ge-1/1/1 all disable false
admin@XorPlus# commit
Commit OK.
Save done.
admin@XorPlus# |
Enable debug of igmp:
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admin@XorPlus# set protocols igmp traceoptions flag ? Possible completions: <[Enter]> Execute this command all Configure all tracing operations event Configure event tracing leave Configure leave tracing query Configure query tracing report Configure report tracingoperations bridge-detection-machine Configure bridge detection state machine tracing configuration Configure configuration tracing events Configure events tracing message-in Configure receive message tracing message-out Configure send message tracing mlag Configure mlag tracing port-information-machine Configure port information state machine tracing port-migration-machine Configure port migration state machine tracing port-receive-machine Configure port receive state machine tracing port-role-selection-machine Configure port role selection state machine tracing port-role-transition-machine Configure port role transition state machine tracing port-state-transition-machine Configure port state transition state machine tracing port-transmit-machine Configure port transmit state machine tracing state-machine-variables Configure state machine variables tracing timers Configure timers tracing topology-change-machine Configure topology change state machine tracing admin@XorPlus# set protocols spanning-tree traceoptions interface ge-1/1/1 all disable false admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# |
Enable debug of igmp:
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admin@XorPlus# set protocols igmp traceoption ? Possible completions: <[Enter]> Execute this command events IGMP protocol events packets IGMP protocol packets trace IGMP internal daemon activity admin@XorPlus# set protocols igmp traceoptions flag all disable falsetraceoption events admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# |
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When the device crashes, it will create a core file which can be found in a directory called pica/core.
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admin@XorPlus$pwdadmin@R2:/pica/core$ pwd /pica/core |
Find the last_death file for Troubleshooting
You can view the last_death file after the device crashes. It will record the last log message and is located in /var/log directory.
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admin@XorPlus$pwdadmin@R2:/pica/core$ cd /var/log admin@XorPlus$ls apt dmesg fsck/ admin@R2:/var/log$ ls btmp faillog fsck lastlog messages report_diag.log dmesg frr last_death lastlog lighttpd messagesprivate news ntpstats wtmp |