Howdy,
regarding 4.2.176 i can absolutely positively NOT recommend it as a
stable code base, 4.2.205 is a direct release containing a critical
bugfix that we had a direct hand in "motivating" cisco to fix promptly.
4.2.176 contains a memory leak in involving mobility groups of size
(our setup is approximately 1700 APs with 18 controllers). This
memory leak is fatal, the general gist is that stateful information
regarding mobility clients isn't released properly from memory as
clients come/go, thus driving memory usage on controllers constantly
up until they crash ungracefully with little or no crash/log
information, controllers also take an inordinate (20+ minutes) amount
of time to recover from the crash, i presume because they're
attempting to log crash data and there isn't any memory available for
that. We observed controllers cycle to 98-99% memory every 8 weeks
until they crashed. Working with the dev engineer they tested and
monitored two of our controllers for several weeks to identify the
issue. I don't know the "critical" size or number of APs/controllers
required to have this be a noticeable issue, but ungraceful controller
reboots occurred every 8 weeks with our setup.
We are currently running 4.2.205 and haven't experienced an "event"
anymore, so i'd recommend 4.2.205 if you need to run 4.2.x code, we
haven't had any experience with any 5.x code at all at this time,
since cisco pulled support for the 10xx series APs from anything newer
than 4.x.
--------
Justin Hao
Texas A&M University
Network Group
(979)862-2162
[email protected]
--------
On Jun 29, 2009, at 7:50 PM, Mike King wrote:
Both 4.2.205 and 4.2.176 have been designated as:
AssureWave The Cisco® AssureWave program focuses on satisfying
customer quality requirements in critical vertical markets in the
wireless space. This program links and expands on product testing
conducted within development engineering, regression testing, and
systems test groups within Cisco. AssureWave certification marks the
successful completion of extensive integrity testing that validates
targeted releases. In addition, Cisco’s AssureWaveprogram ensures
compatibility with major device and application vendors through
established partnerships. Cisco’s partners perform extensive
testing at their own facilities to ensure broader interoperability
with our ongoing new releases. Learn More
So I'd feel safe with them. No higher releases have been certified
under this program..
(Assurewave replace Safeharbor testing for wireless)
On Mon, Jun 29, 2009 at 4:31 PM, Pham, Loc <[email protected]>
wrote:
Guys: I am ready to config and test 3750G on a 4.2.205 code
Beside this bug, any other good stuffs that I should look for ?
CSCsu02630
I am also ( tempted ) to go with the 5.2 for CWAPP functionality if
time permit....
Regards,
Loc Pham, CCIE # 17030 - Sr. Network Staff,
IT Enterprise Security & Services, UCSF Medical Center.
Office 415-353-4492 Pager 415-443-9014
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