Troubleshooting

The following troubleshooting tips may help resolve a configuration problem without the need to contact Cisco's Technical Assistance Center (TAC).

If you contact Support regarding your LocalDirector configuration, have a diagram of your network with IP addresses and subnet masks available, and have a copy of the following output:

• show version

• show configuration

• show interface

• show syslog

• show real

• show virtual

• show bind

• show name

Blank Console

• Make sure that you used the console cable provided with the LocalDirector, and that it is properly connected.

• Make sure that the terminal emulation software is set at 9600 baud, 8 data bits, no parity, and 1 stop bit.

Problems Booting

If you have a non-system diskette in the diskette drive, the LocalDirector will not boot and will display messages similar to the following:

Finesse Bios V3.3 Booting Floppy  ..................................Execing flop Finesse Bios V3.3 Booting Floppy  ..................................Execing flop Finesse Bios V3.3 Booting Floppy

Replace the diskette with one that contains the LocalDirector software or remove the diskette so the LocalDirector can boot from Flash memory.

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Note When copying files from CCO, do not copy the LocalDirector .exe to diskette and use it as a system diskette. See Appendix B, "Software Upgrade," for more information on downloading files from CCO.

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Cannot Access Real Servers

• Use the show configuration command to verify that each network interface is properly configured.

• Make sure that the devices on both network interface segments have the same network number.

Real Servers Can be Accessed but Virtual Is Not Working

You may run across a situation where you can access the real servers and can ping the virtual servers, but you cannot access the real servers through a virtual server. This is usually caused by either a bad cable (rare) or a bridge loop (most likely).

Sometimes two interfaces of the LocalDirector are connected to the same switch/hub, thereby creating a loop. SYSLOG messages are generated to indicate a bridge loop. Ensure that you have properly deployed the LocalDirector, with all the servers on one side and the incoming network on the other.

• Check the routing table with the show route command.

• Make sure you are not trying to access the virtual server from the server side of the switch.

• Make sure that the virtual machine is in service (IS) by using the show virtual command.

Load Balancing

• Make sure (via show real, show config, and show bind) that all the real servers are properly bound to the virtual address(es) and marked in service (IS).

• Test with ping and traceroute to determine if you can reach the real servers through the LocalDirector (they should be available). Check for routing loops.

• If you have assigned weight values to your real servers, be sure that the predictor option is set to weighted.

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Note Depending on your environment, minor fluctuations may occur in load balancing.

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Rebooting

If a LocalDirector is truly crashing (as opposed to just rebooting), it will dump core. Capture the core dump and provide it to Cisco's TAC so they can determine whether or not the issue is known.

Changing Routers or Servers Causes Access Problems

Changing routers or servers may cause access problems if the LocalDirector is using an old MAC address. Enter no arp or clear arp to clear the ARP cache.

Forgot Password

If you use the configure floppy command, the password that was in use when the diskette was saved will overwrite the current password. Try a previously used password, or contact Cisco's TAC.

SYSLOG and SNMP Messages

This section lists SYSLOG and SNMP messages generated by the LocalDirector. The messages are coded as follows:

• syslog() --sent via syslog

• syslog_trap() --sent for syslog MIB in SNMP

• sys() --sent via syslog and syslog MIB

• trap() --sent via LocalDirector SNMP MIB

Configuration Messages

syslog(LOG_NOTICE, "End Configuration: OK")

syslog(LOG_ERR, "Config FAILED")

syslog(LOG_CRIT, "Configuration replication to Standby unit FAILED for command... ")

syslog(LOG_EMERG, "Net Configuration: failed")

syslog(LOG_EMERG, "Net Configuration: unknown TFTP state")

syslog(LOG_EMERG, "Net Configuration TFTP error")

syslog(LOG_NOTICE, "Begin Configuration: reading from terminal")

syslog(LOG_NOTICE, "Begin Configuration: reading from floppy")

syslog(LOG_NOTICE, "Begin Configuration: reading from memory")

syslog(LOG_NOTICE, "Begin Configuration: reading from net")

syslog(LOG_NOTICE, "End Configuration")

syslog(LOG_NOTICE, "Erase Configuration")

syslog(LOG_NOTICE, "Begin Configuration: writing to... ")

syslog(LOG_NOTICE, "End Configuration: [FAILED]")

syslog(LOG_NOTICE, "End Configuration: [OK]")

Failover Messages

syslog(LOG_CRIT,"Cable OK.")

syslog(LOG_CRIT,"Power failure other side.")

syslog(LOG_CRIT,"Cable not connected my side.")

syslog(LOG_CRIT,"Cable not connected other side.")

syslog(LOG_CRIT,"Bad cable: myside - pin1 or pin4-11 external loopback")

syslog(LOG_CRIT,"Bad cable: myside - pin4")

syslog(LOG_CRIT,"Bad cable: otherside - pin6-14 internal loopback")

syslog(LOG_CRIT,"Bad cable: myside - pin4-11 external loopback")

syslog(LOG_CRIT,"Error reading cable status.")

syslog(LOG_CRIT, "Monitoring on interface... waiting")

syslog_trap(LOG_CRIT, "Monitoring on interface... waiting")

syslog(LOG_CRIT, "Monitoring on interface... normal")

syslog_trap(LOG_CRIT, "Monitoring on interface... normal")

syslog(LOG_CRIT, "Lost Failover communications with mate on interface...")

syslog_trap(LOG_CRIT, "Lost Failover communications with mate on interface...")

syslog(LOG_CRIT, "Failover communications failure.")

syslog_trap(LOG_CRIT, "Failover communications failure.")

syslog(LOG_CRIT, "No response from mate.")

syslog_trap(LOG_CRIT, "No response from mate.")

syslog(LOG_CRIT, "Mate interface... failed.")

syslog_trap(LOG_CRIT, "Mate interface... failed.")

syslog(LOG_CRIT, "Mate interface... OK.")

syslog_trap(LOG_CRIT, "Mate interface... OK.")

syslog(LOG_CRIT, "End Configuration Replication")

syslog_trap(LOG_CRIT, "End Configuration Replication")

syslog(LOG_CRIT, "Begin Configuration Replication: Sending to mate")

syslog_trap(LOG_CRIT, "Begin Configuration Replication: Sending to mate")

syslog(LOG_CRIT, "Mate says I'm failed.")

syslog_trap(LOG_CRIT, "Mate says I'm failed.")

syslog(LOG_CRIT, "Mate reporting failure.")

syslog_trap(LOG_CRIT, "Mate reporting failure.")

syslog(LOG_CRIT, "Beginning configuration replication: Receiving from mate")

syslog_trap(LOG_CRIT, "Beginning configuration replication: Receiving from mate")

syslog(LOG_CRIT, "End Configuration Replication")

syslog_trap(LOG_CRIT, "End Configuration Replication")

syslog(LOG_CRIT, "Switching to ACTIVE.")

syslog_trap(LOG_CRIT, "Switching to ACTIVE.")

syslog(LOG_CRIT, "Switching to STNDBY")

syslog_trap(LOG_CRIT, "Switching to STNDBY.")

syslog(LOG_CRIT, "Switching to FAILED.")

syslog_trap(LOG_CRIT, "Switching to FAILED.")

syslog(LOG_CRIT, "Switching to OK.")

syslog_trap(LOG_CRIT, "Switching to OK.")

syslog(LOG_CRIT, "Disabling Failover.")

syslog_trap(LOG_CRIT, "Disabling Failover.")

syslog(LOG_CRIT, "Enabling Failover.")

syslog_trap(LOG_CRIT, "Enabling Failover.")

syslog(LOG_CRIT, "Testing Interface... ")

syslog_trap(LOG_CRIT, "Testing Interface... ")

syslog(LOG_CRIT, "Testing on interface... "Passed" : "Failed")

syslog_trap(LOG_CRIT, "Testing on interface... "Passed" : "Failed")

syslog(LOG_CRIT, "Link status 'Down' on interface... ")

syslog_trap(LOG_CRIT, "Link status 'Down' on interface... ")

syslog(LOG_CRIT, "Link status 'Up' on interface... ")

syslog_trap(LOG_CRIT, "Link status 'Up' on interface... ")

syslog(LOG_CRIT, "Mate's interface... failed")

syslog_trap(LOG_CRIT, "Mate's interface... failed")

Other Messages

syslog(LOG_ERR, "Route table full ... not added.")

sys(LOG_NOTICE, "Virtual... changing predictor from... to ... ")

sys(LOG_CRIT, "LocalDirector out of connections")

sys(LOG_CRIT,"Switching... from... to slowstart")

sys(LOG_CRIT,"Switching... from... to slowstart")

syslog(LOG_NOTICE, "Newly created Real machine... edited to In Service")

syslog(LOG_NOTICE, "Newly created Real machine... edited to Out of Service")

syslog(LOG_NOTICE, "Real machine... edited from Out Of Service to In Service")

sys(LOG_CRIT, "Real machine... Failed (No answer).")

sys(LOG_CRIT, "Real machine... Failed (TCP RST).")

sys(LOG_CRIT, "Real machine... Failed Application "x" ")

syslog(LOG_NOTICE, "Real machine... edited from In Service to Out Of Service")

syslog(LOG_NOTICE, "Real machine... edited from Failed to Out Of Service")

sys(LOG_NOTICE, "Trying Real machine...")

sys(LOG_NOTICE, "Real machine... In Service")

sys(LOG_CRIT, "Real machine... Remains Failed")

sys(LOG_CRIT, "Real machine... remains failed")

sys(LOG_CRIT, "Real machine... Application Remains Failed")

syslog(LOG_NOTICE, "Real machine... edited from Testing to Out Of Service")

syslog(LOG_NOTICE, "Newly created Virtual machine... edited to In Service")

syslog(LOG_NOTICE, "Newly created Virtual machine... edited to Out of Service")

syslog(LOG_NOTICE, "Virtual machine... edited from Out Of Service to In Service")

syslog(LOG_NOTICE, "Virtual machine... edited from In Service to Out Of Service")

sys(LOG_CRIT, "Virtual machine... Failed")

sys(LOG_CRIT,"Virtual machine... At Capacity")

syslog(LOG_NOTICE, "Virtual machine... edited from At Capacity to Out Of Service")

sys(LOG_CRIT, "Virtual machine... no longer At Capacity")

sys(LOG_CRIT, "Virtual machine... failed")

syslog(LOG_NOTICE, "Virtual machine... edited from Failed to Out Of Service")

syslog(LOG_NOTICE, "Virtual machine... edited from Failed to In Service")

sys(LOG_CRIT, "Virtual machine... brought into service")

sys(LOG_CRIT, "Virtual machine... no longer under SYN attack, going to normal mode")

sys(LOG_CRIT, "Virtual machine... under SYN attack, going to SynGuard mode!")

sys(LOG_CRIT,"Switching... from 'slowstart' to... ")

sys(LOG_CRIT,"Switching... from 'slowstart' to... ")

sys(LOG_NOTICE, "LocalDirector Booted")

trap(LdStateChangeTrap, &trapinfo)