Table Of Contents
Release Notes for the 8-Port Catalyst Express 520 Switch, Cisco IOS Release 12.2(35)EX and Later
Revised September 24, 2008
Cisco IOS Releases 12.2(35)EX and later run on the Catalyst Express 520-8PC-K9 switch.
These release notes include important information about this Cisco IOS release and any limitations, restrictions, and caveats that apply to it. Verify that these release notes are correct for your switch. To find the release number of the Cisco IOS image running on your switch:
•On a new or unconfigured switch, see the Cisco IOS release label on the rear panel of your switch.
•On a configured switch, see the Switch Information area on the device manager Dashboard window.
The key features are described in the User Guide for the Catalyst Express 520 Switches. For the complete list of Catalyst Express 520 switch documentation, see the "Switch Documentation Set" section.
Table 1 lists the supported hardware.
Table 1 Supported Hardware
Switch Description Supported by Minimum Cisco IOS Release
Catalyst Express 520-8PC-K9
8 10/100 PoE ports
1 dual-purpose port (one 10/100/1000BASE-T copper port and one small form-factor pluggable [SFP] module slot).
Cisco IOS Release 12.2(35)EX
100BASE-BX-10D, -BX-10U, -FX-FE, -FX-GE, -LX, -LX/LH, -SX, -T
Cisco IOS Release 12.2(35)EX
1 SFP = small form-factor pluggable
Device Manager System Requirements
The device manager hardware and software requirements are described in the User Guide for the Catalyst Express 520 Switches.
Upgrading the Switch Software
The software upgrade procedure is described in the Cisco Configuration Assistant online help. To upgrade the switch, you must download and use Cisco Configuration Assistant.
Limitations and Restrictions
You should review this section before you begin working with the switch. These are known limitations that will not be fixed, and there is not always a workaround. Some features might not work as documented, and some features could be affected by recent changes to the switch hardware or software.
When a PC is connected directly to a switch port, the username password dialog appears twice before the device manager page appears.
The workaround is to enter the username and the password in both dialog windows.
The PC must have a network interface card (NIC) driver that supports IEEE 802.1Q packet tagging if either:
–The PC is directly connected to a Catalyst Express 520 switch port, which is configured with the Switch port role
–The PC is connected to a switch, which is connected through an access port to a Catalyst Express 500 switch port, which is configured with the Switch port role.
A port fails under these conditions:
–The port speed is configured at either 10Mb/s or 100Mb/s (instead of auto), and it is connected to another port that also has the speed configured to 10Mb/s or 100Mb/s.
–The ports are connected by a straight-through cable.
The workaround is to use a crossover cable to connect the two ports, regardless of the speed settings.
When the device manager is launched in secured mode with Internet Explorer 6.0 or FireFox1.5, several security certificates appear. Accept all of the certificates. The device manager then appears.
You cannot configure the copper interface of the dual-purpose port if an SFP module is installed in it.
The workaround is to first remove the SFP module and then connect the copper cable.
You cannot set up the switch for the first time if the switch is connected to an upstream DHCP server and to your management station at the same time. (You can set up the switch by using a PC connected to a one of the switch Ethernet ports or by connecting it to a DHCP server, but not both.)
The workaround is to disconnect the switch from the uplink DHCP server, connect a PC to one of the switch Ethernet ports, and configure the switch by using the Express Setup program.
Resolved Caveats for Release 12.2(35)EX2
On a Cisco platform that receives a TCP SYN packet on a non-listening port, restore (RST) packets might contain a non-randomized identification value on the IP header.
There is no workaround.
A Cisco IOS device may crash while processing an SSL packet. This can happen during the termination of an SSL-based session. The offending packet is not malformed and is normally received as part of the packet exchange.
Cisco has released free software updates that address this vulnerability.
Aside from disabling affected services, there are no available workarounds to mitigate an exploit of this vulnerability.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080924-ssl.shtml.
If the HTTP secure server capability is present, the switch shows the following error message:%DATACORRUPTION-1-DATAINCONSISTENCY: copy error
This error message displays if the HTTP server is configured by using the ip http server global configuration command.
The workaround is to disable the HTTP server by using the no ip http server global command.
Note The switch functionality is not affected by this error message.
Resolved Caveat for Release 12.2(35)EX1
Improvements have been made to User Datagram Protocol (UDP) processing.
Switch Documentation Set
These documents provide complete information about the switch and are available from this Cisco.com site:
These documents are also available on the Cisco Smart Business Communications System Software and Documentation CD-ROM that ships with the switch.
You can order printed copies of documents with a DOC-xxxxxx= number from the Cisco.com sites and from the telephone numbers listed in the URL referenced in the "Obtaining Documentation, Obtaining Support, and Security Guidelines" section.
•Release Notes for the Catalyst Express 520 Switches (not orderable but available on Cisco.com)
•Getting Started Guide for the Catalyst Express 520 Switches (order number DOC-7818063=)
•User Guide for the Catalyst Express 520 Switches (not orderable but available on Cisco.com)
•Device manager online help (available on the switch)
•Regulatory Compliance and Safety Information for the Catalyst Express 520 Switches (not orderable but available on Cisco.com)
•Cisco Limited Lifetime Hardware Warranty Terms for the Catalyst Express 520 Switches (not orderable but available on Cisco.com)
For other information about related products, see these documents:
•Getting Started with Cisco Network Assistant (not orderable but available on Cisco.com)
•Release Notes for Cisco Network Assistant (not orderable but available on Cisco.com)
•Cisco Small Form-Factor Pluggable Modules Installation Notes (not orderable but available on Cisco.com)
•Cisco RPS 675 Redundant Power System Hardware Installation Guide (order number DOC-7815201=)
Obtaining Documentation, Obtaining Support, and Security Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
This document is to be used in conjunction with the documents listed in the "These documents provide complete information about the switch and are available from this Cisco.com site:" section.
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