DRE (DRE+LZ) initialization failed:

[JIM COURTNEY]

I have a 512 WAE running 4.1.5.f that has this issue. The WAE is also having cifs service and cifs kepalive errors too. I thought it was because I had added more memory (1GB stcik) to stop TFO Overload errors which brought the WAE up to 3GB ram. The WAE has to have 1,2, or 4 Gig so I added another stick (1GB) to make it 4Gig total. When I reloaded the WAE the errors came up again. Any help would be greatly appreciated.

MD029-WAAS#sh ver
Cisco Wide Area Application Services Software (WAAS)
Copyright (c) 1999-2010 by Cisco Systems, Inc.
Cisco Wide Area Application Services Software Release 4.1.5f (build b2 Apr 20 20
10)
Version: oe512-4.1.5f.2

Compiled 12:26:34 Apr 20 2010 by cnbuild

System was restarted on Fri Mar 11 07:38:55 2011.
The system has been up for 51 minutes, 35 seconds.

CPU 0 is GenuineIntel Intel(R) Pentium(R) 4 CPU 3.00GHz (rev 4) running at 3000MHz.
Total 1 CPU.
4096 Mbytes of Physical memory.
128 MBytes of flash memory
1 CD ROM drive (Vendor HL-DT-ST Model CD-ROM GCR-8240N)
2 GigabitEthernet interfaces
1 Console interface

Physical disk information:
  disk00: Present    WD-WCANY2685941    (h02 c00 i00 l00 - Int DAS-SATA)
          238472MB(232.9GB)
  disk01: Not present or not responding

Mounted file systems:
MOUNT POINT      TYPE       DEVICE                SIZE     INUSE      FREE USE%
/sw              internal   /dev/sdb1            991MB     914MB      77MB  92%
/swstore         internal   /dev/sdb2            991MB     678MB     313MB  68%
/state           internal   /dev/sdb3           5951MB     200MB    5751MB   3%
/local/local1    SYSFS      /dev/sdb6          11903MB     500MB   11403MB   4%
.../local1/spool PRINTSPOOL /dev/data1/spool     991MB      32MB     959MB   3%
/obj1            CONTENT    /dev/data1/obj    101177MB   22081MB   79096MB  21%
/dre1            CONTENT    /dev/data1/dre     79354MB     128MB   79226MB   0%
/ackq1           internal   /dev/data1/ackq     1189MB      32MB    1157MB   2%
/plz1            internal   /dev/data1/plz      2379MB      65MB    2314MB   2%

No RAID devices present.

Disk encryption feature is disabled.

[Michael Korenbaum]

Jim,

The WAE-512 can only be configured with 1GB or 2GB of RAM.

Running the WAE-512 with 3 or 4GB of RAM is unsupported.

If you are experiencing TFO overload with the WAE-512 with 2GB of RAM that means you're exceding the maximum of 1200 concurrent optimized TCP sessions.  If this occurs frequently at this site, I'd recommend you get a second WAE and put these into a WCCP farm, or restrict what is redirected to the WAE via a WCCP redirect list to avoid overload scenarios.

Also note, when you add more memory to a WAE in a supported configuration (e.g. WAE-512 1GB upgraded to 2GB) you have to do a disk delete-data-partitions and reload the device so the partitions can be reconfigured appopriatey for the new amount of memory.

Regards,

Mike Korenbaum

Cisco WAAS PDI Help Desk

http://www.cisco.com/go/pdihelpdesk

[JIM COURTNEY]

Michael,

The doc that I read said that you could have 1,2, or 4.

http://www.cisco.com/en/US/docs/app_ntwk_services/waas/wae/installation/512/612/guide/9137spec.html#wpxref59985

Can you verify? I don't mind removing the memory but I want to make sure that is the issue.

[Michael Korenbaum]

Jim,

I just verified with engineering that the WAE-512 only supports 1 or 2GB of total memory.  This is listed in the datasheet here:

http://www.cisco.com/en/US/prod/collateral/contnetw/ps5680/ps6474/product_data_sheet0900aecd80329e39.html

The document you pointed me to has a typo in it.  I will raise a document bug with the appropriate team to have this fixed.

Thanks,

Mike

[JIM COURTNEY]

Michael,

I configured the WAE to have only 2GB of ram and it is working fine now. THe CIFS and DRE optimization seem to be doing fine now. I appreciate your help.