Cisco Cisco IOS Software Release 12.2(58)SE

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Release Notes for the Cisco IE 3000 Switch, Cisco IOS Release 12.2(58)SE1 and Later
OL-24335-02
  Important Notes
For trunk ports or access ports configured with IEEE 802.1Q tagging, inconsistent statistics might 
appear in the show interfaces counters privileged EXEC command output. Valid IEEE 802.1Q 
frames of 64 to 66 bytes are correctly forwarded even though the port LED blinks amber, and the 
frames are not counted on the interface statistics. 
There is no workaround. (CSCec35100).
VLAN
If the number of VLANs times the number of trunk ports exceeds the recommended limit of 13,000, 
the switch can fail. 
The workaround is to reduce the number of VLANs or trunks. (CSCeb31087)
When line rate traffic is passing through a dynamic port, and you enter the switchport access vlan 
dynamic
 interface configuration command for a range of ports, the VLANs might not be assigned 
correctly. One or more VLANs with a null ID appears in the MAC address table instead.
The workaround is to enter the switchport access vlan dynamic interface configuration command 
separately on each port. (CSCsi26392)
When many VLANs are configured on the switch, high CPU utilization occurs when many links are 
flapping at the same time.
The workaround is to remove unnecessary VLANs to reduce CPU utilization when many links are 
flapping. (CSCtl04815)
Device Manager Limitations
When you are prompted to accept the security certificate and you click No, you only see a blank 
screen, and the device manager does not launch. 
The workaround is to click Yes when you are prompted to accept the certificate. (CSCef45718)
When you successfully upgrade an image by using device manager and click No when prompted to 
reload the image, device manager becomes unusable. 
The workaround is to manually reload the switch. (CSCsj88169)
Important Notes
Device Manager Notes
You cannot create and manage switch clusters through the device manager. To create and manage 
switch clusters, use the CLI or Cisco Network Assistant.
We recommend this browser setting to speed up the time needed to display the device manager from 
Microsoft Internet Explorer. 
From Microsoft Internet Explorer:
1.
Choose Tools > Internet Options
2.
Click Settings in the “Temporary Internet files” area. 
3.
From the Settings window, choose Automatically.