WLC 5508 - config best practices - large deposit

Hello everyone, I recently added a Cisco 5508 to control many LAPs on a very large deposit.
We have indoor and outdoor LAPs on the environment. Many Hand Helds using 802.11b.
I was wondering if anyone can tell me if there is a best practice for environments with:
- 802.11b client devices.
- 802.11g client devices.
- indoor/outdoor LAP.
- high-density mineral water/soda on the deposit.
- LAPs are 1240 (indoor) and 1310 (outdoor).
- Antennas are 1728 and 2506 respectively.
Among that, on the log I see continous entries of reassociate and reauthentication for the same devices, but not equal logs of deauthentication.
Thanks in advance.
Regards

for instance, I have this recent log:
0 Mon Dec 10 17:39:50 2012 Client Authenticated: MAC Address:00:a0:f8:b9:58:73 base Radio MAC:00:24:c4:e0:3d:00 Slot: 0 User Name:unknown IP Addr:181.142.126.150 SSID:HH
1 Mon Dec 10 17:39:50 2012 Client Association: Client MAC:00:a0:f8:b9:58:73 Base Radio MAC :00:24:c4:e0:3d:00 Slot: 0 User Name:unknown IP Addr: 181.142.126.150
2 Mon Dec 10 17:39:27 2012 Client Authenticated: MAC Address:00:a0:f8:b9:58:73 base Radio MAC:00:24:c4:e0:3e:10 Slot: 0 User Name:unknown IP Addr:181.142.126.150 SSID:HH
3 Mon Dec 10 17:39:27 2012 Client Association: Client MAC:00:a0:f8:b9:58:73 Base Radio MAC :00:24:c4:e0:3e:10 Slot: 0 User Name:unknown IP Addr: 181.142.126.150
4 Mon Dec 10 17:39:26 2012 Client Deauthenticated: MACAddress:00:a0:f8:b9:58:73 Base Radio MAC:00:3a:9a:7d:20:80 Slot: 0 User Name: unknown Ip Address: 181.142.126.150 Reason:Unspecified ReasonCode: 1
5 Mon Dec 10 17:39:23 2012 Client Authenticated: MAC Address:00:a0:f8:b9:58:73 base Radio MAC:00:3a:9a:7d:20:80 Slot: 0 User Name:unknown IP Addr:181.142.126.150 SSID:HH
6 Mon Dec 10 17:39:22 2012 Client Association: Client MAC:00:a0:f8:b9:58:73 Base Radio MAC :00:3a:9a:7d:20:80 Slot: 0 User Name:unknown IP Addr: 181.142.126.150
Could be this because of excessive roaming?. If yes, how can I prevent it?.
Two of the 3 LAPs reported are very close one of each other, but the 3° LAP is over 60 meters or more from the other two.
The 3 LAPs are using 5,2 dBi antennas.

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Hi,
Two WLC 5508 running identical code version. One is 50 license Primary, the second is HA. Identical config on both. HA WLC can upload its config to the TFTP or FTP server but Primary cannot. The operation fails for both CLI and GUI and for different protocols i.e. TFTP, FTP.
#### Primary Controller
(Cisco Controller) >show sysinfo
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 7.4.110.0
Bootloader Version............................... 1.0.20
Field Recovery Image Version..................... 7.6.95.16
Firmware Version................................. FPGA 1.7, Env 1.8, USB console 2.2
Build Type....................................... DATA + WPS
System Name...................................... PRODWC7309
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.1069
Redundancy Mode.................................. Disabled
IP Address....................................... 10.1.30.210
Last Reset....................................... Power on reset
System Up Time................................... 18 days 18 hrs 51 mins 35 secs
System Timezone Location......................... (GMT+10:00) Sydney, Melbourne, Canberra
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180
Configured Country............................... AU - Australia
Operating Environment............................ Commercial (0 to 40 C)
--More-- or (q)uit
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +34 C
External Temperature............................. +17 C
Fan Status....................................... OK
State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 8
Number of Active Clients......................... 138
Memory Current Usage............................. Unknown
Memory Average Usage............................. Unknown
CPU Current Usage................................ Unknown
CPU Average Usage................................ Unknown
Burned-in MAC Address............................ 3C:08:F6:CA:52:20
Power Supply 1................................... Present, OK
Power Supply 2................................... Present, OK
Maximum number of APs supported.................. 50
(Cisco Controller) >debug transfer trace enable
(Cisco Controller) >transfer upload start
Mode............................................. TFTP
TFTP Server IP................................... 10.1.22.2
TFTP Path........................................ /
TFTP Filename.................................... PRODWC7309-tmp.cfg
Data Type........................................ Config File
Encryption....................................... Disabled
*** WARNING: Config File Encryption Disabled ***
Are you sure you want to start? (y/N) Y
*TransferTask: Jun 02 10:41:15.183: Memory overcommit policy changed from 0 to 1
*TransferTask: Jun 02 10:41:15.183: RESULT_STRING: TFTP Config transfer starting.
TFTP Config transfer starting.
*TransferTask: Jun 02 10:41:15.183: RESULT_CODE:1
*TransferTask: Jun 02 10:41:24.309: Locking tftp semaphore, pHost=10.1.22.2 pFilename=/PRODWC7309-tmp.cfg
*TransferTask: Jun 02 10:41:24.393: Semaphore locked, now unlocking, pHost=10.1.22.2 pFilename=/PRODWC7309-tmp.cfg
*TransferTask: Jun 02 10:41:24.393: Semaphore successfully unlocked, pHost=10.1.22.2 pFilename=/PRODWC7309-tmp.cfg
*TransferTask: Jun 02 10:41:24.394: tftp rc=-1, pHost=10.1.22.2 pFilename=/PRODWC7309-tmp.cfg
pLocalFilename=/mnt/application/xml/clis/clifile
*TransferTask: Jun 02 10:41:24.394: RESULT_STRING: % Error: Config file transfer failed - Unknown error - refer to log
*TransferTask: Jun 02 10:41:24.394: RESULT_CODE:12
*TransferTask: Jun 02 10:41:24.394: Memory overcommit policy restored from 1 to 0
% Error: Config file transfer failed - Unknown error - refer to log
(Cisco Controller) >show logging
*TransferTask: Jun 02 10:41:24.393: #UPDATE-3-FILE_OPEN_FAIL: updcode.c:4579 Failed to open file /mnt/application/xml/clis/clifile.
*sshpmReceiveTask: Jun 02 10:41:24.315: #OSAPI-3-MUTEX_FREE_INFO: osapi_sem.c:1087 Sema 0x2b32def8 time=142 ulk=1621944 lk=1621802 Locker(sshpmReceiveTask sshpmrecv.c:1662 pc=0x10b07938) unLocker(sshpmReceiveTask sshpmReceiveTaskEntry:1647 pc=0x10b07938)
-Traceback: 0x10af9500 0x1072517c 0x10b07938 0x12020250 0x12080bfc
*TransferTask: Jun 02 10:39:01.789: #UPDATE-3-FILE_OPEN_FAIL: updcode.c:4579 Failed to open file /mnt/application/xml/clis/clifile.
*sshpmReceiveTask: Jun 02 10:39:01.713: #OSAPI-3-MUTEX_FREE_INFO: osapi_sem.c:1087 Sema 0x2b32def8 time=5598 ulk=1621801 lk=1616203 Locker(sshpmReceiveTask sshpmrecv.c:1662 pc=0x10b07938) unLocker(sshpmReceiveTask sshpmReceiveTaskEntry:1647 pc=0x10b07938)
-Traceback: 0x10af9500 0x1072517c 0x10b07938 0x12020250 0x12080bfc
#### HA Controller
(Cisco Controller) >show sysinfo
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 7.4.110.0
Bootloader Version............................... 1.0.20
Field Recovery Image Version..................... 7.6.95.16
Firmware Version................................. FPGA 1.7, Env 1.8, USB console 2.2
Build Type....................................... DATA + WPS
System Name...................................... PRODWC7310
System Location..................................
System Contact...................................
System ObjectID.................................. 1.3.6.1.4.1.9.1.1069
Redundancy Mode.................................. Disabled
IP Address....................................... 10.1.31.210
Last Reset....................................... Software reset
System Up Time................................... 18 days 19 hrs 1 mins 27 secs
System Timezone Location......................... (GMT+10:00) Sydney, Melbourne, Canberra
System Stats Realtime Interval................... 5
System Stats Normal Interval..................... 180
Configured Country............................... AU - Australia
Operating Environment............................ Commercial (0 to 40 C)
--More-- or (q)uit
Internal Temp Alarm Limits....................... 0 to 65 C
Internal Temperature............................. +34 C
External Temperature............................. +17 C
Fan Status....................................... OK
State of 802.11b Network......................... Enabled
State of 802.11a Network......................... Enabled
Number of WLANs.................................. 4
Number of Active Clients......................... 0
Memory Current Usage............................. Unknown
Memory Average Usage............................. Unknown
CPU Current Usage................................ Unknown
CPU Average Usage................................ Unknown
Burned-in MAC Address............................ 3C:08:F6:CA:53:C0
Power Supply 1................................... Present, OK
Power Supply 2................................... Present, OK
Maximum number of APs supported.................. 500
(Cisco Controller) >debug transfer trace enable
(Cisco Controller) >transfer upload start
Mode............................................. FTP
FTP Server IP.................................... 10.1.22.2
FTP Server Port.................................. 21
FTP Path......................................... /
FTP Filename..................................... 10_1_31_210_140602_1050.cfg
FTP Username..................................... ftpuser
FTP Password..................................... *********
Data Type........................................ Config File
Encryption....................................... Disabled
*** WARNING: Config File Encryption Disabled ***
Are you sure you want to start? (y/N) y
*TransferTask: Jun 02 10:51:31.278: Memory overcommit policy changed from 0 to 1
*TransferTask: Jun 02 10:51:31.278: RESULT_STRING: FTP Config transfer starting.
FTP Config transfer starting.
*TransferTask: Jun 02 10:51:31.278: RESULT_CODE:1
*TransferTask: Jun 02 10:52:05.468: ftp operation returns 0
*TransferTask: Jun 02 10:52:05.477: RESULT_STRING: File transfer operation completed successfully.
*TransferTask: Jun 02 10:52:05.477: RESULT_CODE:11
File transfer operation completed successfully.
Not upgrading to 7.4.121.0 because of bug CSCuo63103. Have not restarted the controller yet.
Any one else had this issue ? Is there a workaround ?
Thanks,
Rick.

Thanks Stephen, In my deployments of 7.4.110.0 version I have not seen this issue so may be controller reboot will fix it (we do have HA to minimize the impact). I will keep the thread updated with findings and may request TAC for the special release 7.4.121.0 if the still not happy with 7.4.110.0
Rick.

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Last edited by Trilby (2012-07-01 15:34:43)

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Mark as answer or vote as helpful if you find it useful | Igor

Large heap sizes, GC tuning and best practices

Hello,
I’ve read in the best practices document that the recommended heap size (without JVM GC tuning) is 512M. It also indicates that GC tuning, object number/size, and hardware configuration play a significant role in determining what the optimal heap size is. My particular Coherence implementation contains a static data set that is fairly large in size (150-300k per entry). Our hardware platform contains 16G physical RAM available and we want to dedicate at least 1G to the system and 512M for a proxy instance (localstorage=false) which our TCP*Extend clients will use to connect to the cache. This leaves us 14.5G available for our cache instances.
We’re trying to determine the proper balance of heap size vs num of cache instances and have ended up with the following configuration. 7 cache instances per node running with 2G heap using a high-units value of 1.5G. Our testing has shown that using the Concurrent Mark Sweep GC algorithm warrants no substantial GC pauses and we have also done testing with a heap fragmentation inducer (http://www.azulsystems.com/e2e/docs/Fragger.java) which also shows no significant pauses.
The reason we opted for a larger heap was to cut down on the cluster communication and context switching overhead as well as the administration challenges that 28 separate JVM processes would create. Although our testing has shown successful results, my concern here is that we’re straying from the best practices recommendations and I’m wondering what others thoughts are about the configuration outlined above.
Thanks,
- Allen Bettilyon

Hello,
I’ve read in the best practices document that the recommended heap size (without JVM GC tuning) is 512M. It also indicates that GC tuning, object number/size, and hardware configuration play a significant role in determining what the optimal heap size is. My particular Coherence implementation contains a static data set that is fairly large in size (150-300k per entry). Our hardware platform contains 16G physical RAM available and we want to dedicate at least 1G to the system and 512M for a proxy instance (localstorage=false) which our TCP*Extend clients will use to connect to the cache. This leaves us 14.5G available for our cache instances.
We’re trying to determine the proper balance of heap size vs num of cache instances and have ended up with the following configuration. 7 cache instances per node running with 2G heap using a high-units value of 1.5G. Our testing has shown that using the Concurrent Mark Sweep GC algorithm warrants no substantial GC pauses and we have also done testing with a heap fragmentation inducer (http://www.azulsystems.com/e2e/docs/Fragger.java) which also shows no significant pauses.
The reason we opted for a larger heap was to cut down on the cluster communication and context switching overhead as well as the administration challenges that 28 separate JVM processes would create. Although our testing has shown successful results, my concern here is that we’re straying from the best practices recommendations and I’m wondering what others thoughts are about the configuration outlined above.
Thanks,
- Allen Bettilyon

Best Practice for config upgrade

Hi
Is there a best practice guide to follow to performing a network upgrade. So I am replacing a stack of 5 3750 switches and replacing with 2 stacks of 2 3750x switches, but then also introducing a 4500x vss pair aswell as the new core. Is there an easy migration process to migrate the config or do I have to understand what the current network is configured as and build a new config for the new topology.
Im new to this process so just wondering if I can find an easier way, Thanks

Is there an easy migration process to migrate the config or do I have to understand what the current network is configured as and build a new config for the new topology.
You really need to understand how the current network is configured before you can do the upgrade otherwise if something doesn't work you will have no idea of where to begin troubleshooting.
That doesn't mean you need to build an entirely new configuration because you may well be able to apply most of the configuration on your existing switches to the new switches although it's not clear what functions the new switches will be doing ie.
currently you have a stack of 3750s doing what ? eg. access for users, routing for vlans etc.
you are replacing them with 3750x's switches and 4500x switches so are you splitting up the functions of the 3750s between them.
If you are then obviously you cannot take the existing configuration and copy it to both the 3750x and the 4500x switches.
When I did upgrades like this I would download the existing configurations to my laptop and make any necessary edits. If I couldn't use the existing configuration I just created new ones. When I came to upgrade I had all the configurations ready to load onto the switches.
Bear in mind that some configuration just won't copy across ie. if you have QOS on your current switches and you try to copy that to the 4500x it probably wont work as they use different commands for a lot of the same functions.
But the key thing is you must understand what you are trying to do ie. simply trying to copy across configurations without the understanding could create a lot of problems.
Jon

Best practice when doing large cascading updates

Hello all
I am looking for some help with tackling a fairly large cascading update.
I have an object tree that needs to be merged using JPA and Toplink.
Each update consists of 5-10000 objects with a decent depth as well.
Can anyone give me some pointers/hints towards a Best practice for doing this? Looping though each object with JPA's merge takes minutes to complete, so i would rather not do that.
I have never actually used TopLinks own API before, so i am especially interested if TopLink has an effective way of handling this, preferably with a link to some related reading material?
Note that i have a somewhat duplicate question on (Noting for good forum practice)
http://stackoverflow.com/questions/14235577/how-to-execute-a-cascading-jpa-toplink-batch-update

Not certain what you think you can't do. Take a long clip and open it in the Viewer. Set In and Out points. Drop that into the Timeline. Now you can move along in the Viewer clip and set new Ins and Outs and drop that into the Timeline. Clips in the Timeline are created from the Ins and Outs you set in the Viewer.
Is that what you want to do? If it is, I don't where making copies of the clip would work for you
Later, if you want to match up a clip in the Timeline to that master clip, just use Match Clip (find) in the timeline to find where it correaltes to your main clip
You can have FCE automatically create subclips at camera cut points by using DV Stop/Start Detect if that is what you're looking for

WLC 5508 - config best practices - large deposit

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