Cisco Cisco Aironet 350 Wireless Bridge 문제 해결 가이드
free 3263544 370 8820 2875056
alloc 10061376 5490 1832 −
cumulative
alloc 11956232 16310 733 −
This example shows that the free memory is 3,263,544 bytes, or approximately 3.2 MB. The upgrade
procedure, therefore, does not run successfully.
procedure, therefore, does not run successfully.
In order to increase free DRAM, you must terminate noncritical processes or temporarily disable other
resources (like a second radio). Try some or all of these actions in order to increase free DRAM:
resources (like a second radio). Try some or all of these actions in order to increase free DRAM:
Temporarily remove the IEEE 802.11a radio module (AIR−RM20A) during the upgrade procedure.
•
Disable extra memory allocations that are intended for use by some Simple Network Management
Protocol (SNMP) functions:
Protocol (SNMP) functions:
Click Setup.
1.
Click Event Handling.
2.
Confirm that Maximum number of bytes stored per Alert packet is set to 0.
3.
Confirm that Maximum memory reserved for Detailed Event Trace Buffer (bytes) is set to 0.
4.
Note: When you apply these changes, the unit must reboot. But the process frees up sufficient DRAM
resources in order to reach the 4 MB minimum.
resources in order to reach the 4 MB minimum.
•
Set non−IP−related configuration items back to factory default values.
•
After you make these changes, the :vxdiag_memshow command indicates that sufficient free DRAM is
available.
available.
(Auto Apply On) ^R, =, <ENTER>, or [Link Text]:
:vxdiag_memshow
status bytes blocks avg block max block
−−−−−− −−−−−−−−− −−−−−−−− −−−−−−−−−− −−−−−−−−−−
current
free 4336584 252 17208 3943792
alloc 8988336 4355 2063 −
cumulative
alloc 9663568 8914 1084 −
In this example, the free DRAM memory contains 4,336,584 bytes, or approximately 4.3 MB.
In addition, the upgrade does not require AP installation keys. If a unit has inadvertently had the installation
keys deleted, you can still upgrade to Cisco IOS Software without issue.
keys deleted, you can still upgrade to Cisco IOS Software without issue.
Conventions
Refer to Cisco Technical Tips Conventions for more information on document conventions.
Downgrade VxWorks Firmware Version to 12.03T
You must follow this procedure if you have an AP that runs VxWorks firmware versions 12.04 or later. In
order to downgrade the AP to 12.03T code, perform these steps:
order to downgrade the AP to 12.03T code, perform these steps:
Download the file with the name AP1200v1203T.exe from Downloads − Cisco Aironet 1200 Series
Access Point Firmware and Utilities (VxWorks Software) (registered customers only) .
Access Point Firmware and Utilities (VxWorks Software) (registered customers only) .
1.
Unzip the file AP1200v1203T.exe.
2.
In the GUI of your AP, choose Setup > Cisco Services.
3.
Click Fully Update Firmware Through Browser.
4.