Problem Solving and Troubleshooting in AIX 5L - IBM Redbooks

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7.2.5 Dynamic or static routing If you are using dynamic routing, verify that the gateway is listed and correct in the kernel routing tables by issuing the netstat -r command. If the gateway host is using the Routing Information Protocol (RIP) with the routed daemon, make sure that a static route to the target host is set up in the /etc/gateways file. Note: You need to do this only if the routing daemon cannot identify the route to a distant host through queries to other gateways. If the gateway host is using the RIP with the gated daemon, make sure that a static route to the target host is set up in the gated.conf file. If you are using dynamic routing with the routed daemon: ► If routed cannot identify the route through queries, for example, if the target host is not running the RIP, check the /etc/gateways file to verify that a route to the target host is defined. ► Make sure that gateways responsible for forwarding packets to the host are up and running the RIP. Otherwise, you will need to define a static route. ► Run the routed daemon using the debug option to log such information as bad packets received. Invoke the daemon from the command line using the following command: # startsrc -s routed -a "-d" ► Run the routed daemon using the -t flag, which causes all packets sent or received to be written to standard output. When routed is run in this mode, it remains under the control of the terminal that started it. Therefore, an interrupt from the controlling terminal kills the daemon. If you are using dynamic routing with the gated daemon: ► Verify that the /etc/gated.conf file is configured correctly and that you are running the correct protocols. ► Make sure the gateway on the source network is using the same protocol as the gateway on the destination network. ► Make sure that the machine with which you are trying to communicate has a route back to your host machine. ► Verify that the gateway names in the gated.conf file correspond to the gateway names listed in the /etc/networks file. 204 Problem Solving and Troubleshooting in AIX 5L
7.2.6 SRC problems If you are using the rip or hello protocols, and routes to the destination cannot be identified through routing queries, check the gated.conf file to verify that a route to the target host is defined. Set static routes under the following conditions: ► The destination host is not running the same protocol as the source host, so they cannot exchange routing information. ► The host must be reached by a distant gateway (a gateway that is on a different autonomous system than the source host). The RIP can be used only among hosts on the same autonomous system. If you are not using dynamic routing, you are probably using default static routing, which may have some direct routes set up, but all other routes are directed to a gateway machine that handles forwarding of the data. In this case, you can manually add and delete routes. If there are routes in the routing table that look obviously wrong, delete them with the route command: route delete Routes can be added the same way: route add net For example, to add a default route: # route add default 129.35.128.1 To delete a network route: # route delete net 9.3.199 9.3.189.45 If changes to the /etc/inetd.conf file do not take effect, update the inetd daemon by issuing the refresh -s inetd command or the kill -1 InetdPID command. If the startsrc -s [subsystem name] returns the following error message: 0513-00 The System Resource Controller is not active. The System Resource Controller subsystem has not been activated. Issue the srcmstr & command to start SRC, then reissue the startsrc command. Also, try starting the daemon from the command line without SRC support. If the refresh -s [subsystem name] or lssrc -ls [subsystem name] returns the following error message: [subsystem name] does not support this option. Chapter 7. TCP/IP and networking problem solving 205
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Problem Solving and Troubleshooting
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Take Note! Before using this inform
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3.2.1 Pre-boot state . . . . . . .
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6.1.4 LVM device driver . . . . . .
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8.1.1 Removing devices. . . . . . .
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12.2.3 Use splp to look at printer
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xii Problem Solving and Troubleshoo
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xiv Problem Solving and Troubleshoo
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xvi Problem Solving and Troubleshoo
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KyeongWon Jeong is a Consulting IT
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We want our IBM Redbooks to be as h
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Although the title of this redbook
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The following questions should be a
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should be supplied to IBM. If possi
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Document Form number RS/6000 and pS
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pSeries and RS/6000 Model Form numb
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Does machine power on and stay powe
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From Figure 1-2 on page 13. Do you
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Symptom Possible cause Refer to LED
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► Check disk space availability o
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2.1 Error logging overview The erro
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2.2.2 Error messages The template a
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35BFC499 0821161601 P H cd0 DISK OP
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There are some new options introduc
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PERF The performance of the device
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VPD Vital product data. The content
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SENSE DATA 0000 0000 0000 0000 0000
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__filbuf 2C0 fgets 134 ftp_fgets 9C
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AIX 5L Version 5.1 has changed the
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usr/lib/libbsd.a /usr/lib/libbind.a
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3.1 Types of machines Certain proce
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42 Problem Solving and Troubleshoot
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ackplane, and on the 7015 R series,
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Boot process differences On the S70
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3.2.4 Boot stage three Once the ico
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Access boot list on PCI machine To
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Machine hang shortly after power on
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containing hd5, return to step 5 an
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Note: Power cables must be removed
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3.6 LED 551, 552, 554, 555, 556, an
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7. If there is a version of v3fshel
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# fsck -y /dev/hd4 # fsck -y /dev/h
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3.6.3 LED 553 halt 12.If you copied
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export PATH 8. /etc/environment is
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3.7 No login prompt If the system b
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4.1 Introduction Your system genera
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Option 1: Using the Web-based Syste
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After selecting this sequence, the
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Note: AIX releases prior to Version
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Option 3: Using the command line To
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The -l flag logs the command output
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Option 3: Using the command line Ru
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Figure 4-6 Always allow system dump
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LED code sysdumpdev status 0c5 -3 I
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SYSTEM MESSAGES: AIX Version 5.1 St
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The snap command supports the follo
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Forcing a dump on MCA systems To fo
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► Creation and deletion of proces
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nid....... 4232044C time of crash:
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Example 4-16 stack trace back (0)>
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........... ganchor :00000000 THREA
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.lowthresh_init 019E7028 .strthresh
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► knlist [symbol] Displays addres
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In this example, there are two leve
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proc subcommand The proc subcommand
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PID Process ID of the associated pr
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Handling crash output Some crash su
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114 Problem Solving and Troubleshoo
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5.1 General advice 5.1.1 Diagnostic
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- The GH value identifies a port, a
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5.2.1 Making sense of the error log
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ROS Level and ID............5 5A Se
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http://www.ibm.com/servers/eserver/
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Example 5-2 FUNCTION SELECTION menu
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Concurrent mode provides a way to r
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Once the keyboard input has been pr
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The machine types that support boot
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3. Select Service Aids or Task Sele
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10.Enter the client address, server
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The microcode download facility is
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Note: The 7248 43P SMS microcode is
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The CHRP machines models, 7017-S70,
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Low-voltage differential/single-end
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Inforamtion for Micro Channel Bus S
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This message will be produced when
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Failed The drive was failed by the
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Feature Code 5.8.2 SSA devices 6219
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Page 252 and 253: 7.4.8 traceroute 7.4.9 netstat The
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The NFS server (host name) is down.
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domain names of hosts so that users
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7.8.1 AIX as a PPP client (outgoing
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Where /tmp/ppp is the file set up w
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Use the following command to connec
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7.9 Sendmail troubleshooting AIX 5L
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When a workstation that is behind a
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8.1 Handling graphics devices Befor
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8.3 X server 8.3.1 Start X server
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3. Wrong display. The X server mayb
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4. To find the location of the hang
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► TCP sockets This is applicable
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If this fails to start, check the f
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. . number of extensions: 8 XInputE
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8.6.3 Problem with login 8.6.4 CDE
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While some of these filesets increa
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In general, the causes of user appl
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9.2.3 Name conflict Depending on ho
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exist. 290 Problem Solving and Trou
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AIX 5L Version 5.1 binary compatibi
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► The nlist() interface ► DCE t
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► POSIX compliant AIX is POSIX an
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in the wget.spec file to: %define v
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Finding memory-leaking programs A m
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The following resource managers are
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State = "Active" condition-response
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Detection Time-out [2] # Process Pr
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1735-023 shconf: Priority Problem C
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► Hardware problems Problems with
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10.2 Monitoring performance Due to
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This command displays one line of o
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Useful flags -P Proc ID, ... | ALL
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Emulation and alignment detection I
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There are several general rules tha
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Use the following commands to deter
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Example 10-6 The memory usage of a
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means no pacing. A process cannot e
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ARG/ENV list size in 4K byte blocks
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scsi1 5415.8 1354.0 11644 0 Disks:
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-o file: open output file (default
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10.3.1 Using the netpmon command Th
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The type of report can be customize
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enice Alters priority of running pr
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11.1 Introduction The trace system
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In AIX 5L Version 5.1, trace now su
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Interactive mode tracing If the tra
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SAVE PREVIOUS log file? [no] + Omit
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# trcstop To trace the same command
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-O Options Allows more detailed opt
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Copy the following files from the s
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- Is the data formatted properly by
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- PowerPC: lssrc -s qdaemon 12.1.2
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the printer is attached to a local
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- The right size of paper was not r
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for “character special device.”
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Make sure to look at the space that
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Does the printer print correctly fo
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12.1.6 The output spacing is bad Th
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echo “\033)0B\c” The command us
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Make sure that the lpd server is ac
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Are the flags correct? This is a go
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12.2.4 Printing to a file Printing
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12.2.7 Using iptrace to trace netwo
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Capturing a file as it goes over th
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The other method to capture flags i
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16-port adapter considerations The
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System V defined printer attributes
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The lpNet log shows you when networ
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When looking at the file, it may be
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Interface file banner selection For
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These tools can be expanded until y
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Remote: rs1230a.itsc.austin.ibm.com
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12.3.14 Troubleshooting HP JetDirec
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Extraneous files in qdir Another pr
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produced this error message in msg1
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Line descriptions for the file abov
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This is also useful to see how diff
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Configuration banner selection Bann
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12.5.2 Cannot change attributes bec
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Although the hpnpcfg script is undo
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13.1 Debugging a network boot probl
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ootps dgram udp wait root /usr/sbin
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database shows the correct platform
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For other NIM LED codes, see Table
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13.2.1 Producing debug output from
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13.2.2 Producing debug output from
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Time: 35 LEDS: 0x539 Number of runn
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3. Select the showlog operation. 4.
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► 7015 R10/R20/R21 Service Guide,
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► AIX 5L Version 5.1 System Manag
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The following terms are trademarks
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LES LAN Emulation Server LUM Licenc
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adapter part number 146 adapter pla
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more 23 mount 176 mpcfg 42 netpmon
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du 176 dummy queue device 404 dump
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hardware surveillance 41 hardware t
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lo0 203 loader 289 local traffic 22
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od 409 od subcommand 110 ODM 20, 25
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eadelf 297 real memory 319 realloc(
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System V print subsystem 390 stop b
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serial pinouts 388 WLM 337 wlmmon c
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Problem Solving and Troubleshooting
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Problem Solving and Troubleshooting in AIX 5L - IBM Redbooks

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