Cisco 3020 - Cisco Catalyst Blade Switch Instruction Manual

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Release Notes for the Cisco Catalyst
Blade Switch 3020 for HP,
Cisco IOS Release 12.2(50)SE and Later
Revised August 13, 2009
Cisco IOS Release 12.2(50)SE and later runs on the Cisco Catalyst Blade Switch 3020 for HP, referred
to as the switch. Unless otherwise noted, the term switch refers to a standalone switch.
http://www.cisco.com/en/US/products/ps8743/prod_release_notes_list.html
Note If you wish to use Device Manager to upgrade the switch from Cisco IOS Release 12.2(35)SE through
Cisco IOS Release 12.2(40)SE1 (the LAN Base image) to Cisco IOS Release 12.2(50)SE or later (the IP
base image), you must first upgrade to Cisco IOS Release 12.2(40)SE2.
These release notes include important information about Cisco IOS Release 12.2(50)SE and any
limitations, restrictions, and caveats that apply to them. Verify that these release notes are correct for
your switch:
•If you are installing a new switch, see the Cisco IOS release label on the switch packaging.
•If your switch is on, use the show version privileged EXEC command. See the “Finding the
Software Version and Feature Set” section on page 3.
•If you are upgrading to a new release, see the software upgrade filename for the software version.
See the “Deciding Which Files to Use” section on page 4.
For the complete list of Cisco Catalyst Blade Switch 3020 for HP documentation, see the “Updates to
the Getting Started Guide” section on page 24.
You can download the switch software from this site (registered Cisco.com users with a login password):
http://tools.cisco.com/support/downloads/go/MDFTree.x?butype=switches
This software release is part of a special release of Cisco IOS software that is not released on the same
8-week maintenance cycle that is used for other platforms. As maintenance releases and future software
releases become available, they will be posted to Cisco.com in the Cisco IOS software area.

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Contents
Contents
•“System Requirements” section on page 2
•“Upgrading the Switch Software” section on page 3
•“Installation Notes” section on page 6
•“New Software Features” section on page 6
•“Limitations and Restrictions” section on page 7
•“Important Notes” section on page 11
•“Open Caveats” section on page 13
•“Resolved Caveats” section on page 13
•“Documentation Updates” section on page 17
•“Obtaining Documentation, Obtaining Support, and Security Guidelines” section on page 25
System Requirements
•“Hardware Supported” section on page 2
•“Device Manager System Requirements” section on page 2
Hardware Supported
Table 1 lists the hardware supported on this release.
Table 1 Supported Hardware
Device Manager System Requirements
•“Hardware Requirements” section on page 3
•“Software Requirements” section on page 3
Switch Description Supported by Minimum Cisco IOS Release
Cisco Catalyst Blade Switch 3020
for HP
24-Gigabit Ethernet ports and 4 SFP
module slots
Cisco IOS Release 12.2(35)SE
Small form factor pluggable (SFP)
modules
1000BASE-LX, -SX, and -T Cisco IOS Release 12.2(35)SE

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Upgrading the Switch Software
Hardware Requirements
Table 2 lists the minimum hardware requirements for running the device manager.
Software Requirements
These are the supported operating systems and browsers for the device manager:
•Windows 2000, XP, Vista, and Windows Server 2003
•Internet Explorer 5.5, 6.0, 7.0, Firefox 1.5, 2.0 or later
The device manager verifies the browser version when starting a session, and it does not require a
plug-in.
Upgrading the Switch Software
These are the procedures for downloading software. Before downloading software, read this section for
important information:
•“Finding the Software Version and Feature Set” section on page 3
•“Deciding Which Files to Use” section on page 4
•“Archiving Software Images” section on page 4
•“Upgrading a Switch by Using the Device Manager” section on page 5
•“Upgrading a Switch by Using the CLI” section on page 5
•“Recovering from a Software Failure” section on page 6
Finding the Software Version and Feature Set
The Cisco IOS image is stored as a bin file in a directory that is named with the Cisco IOS release.
A subdirectory contains the files needed for web management. The image is stored on the system board
flash device (flash:).
You can use the show version privileged EXEC command to see the software version that is running on
your switch. The second line of the display shows the version.
You can also use the dir filesystem:privileged EXEC command to see the directory names of other
software images that you might have stored in flash memory.
Table 2 Minimum Hardware Requirements
Processor Speed DRAM Number of Colors Resolution Font Size
233 MHz minimum1
1. We recommend 1 GHz.
512 MB2
2. We recommend 1 GB DRAM.
256 1024 x 768 Small

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Upgrading the Switch Software
Deciding Which Files to Use
The upgrade procedures in these release notes describe how to perform the upgrade by using a combined
tar file. This file contains the Cisco IOS image file and the files needed for the embedded device
manager. You must use the combined tar file to upgrade the switch through the device manager. To
upgrade the switch through the command-line interface (CLI), use the tar file and the archive
download-sw privileged EXEC command.
Note If you wish to use Device Manager to upgrade the switch from Cisco IOS Release 12.2(35)SE through
Cisco IOS Release 12.2(40)SE1 (the LAN Base image) to Cisco IOS Release 12.2(50)SE or later (the IP
base image), you must first upgrade to Cisco IOS Release 12.2(40)SE2.
Table 3 lists the filenames for this software release.
Archiving Software Images
Before upgrading your switch software, make sure that you have archived copies of the current Cisco
IOS release and the Cisco IOS release to which you are upgrading. You should keep these archived
images until you have upgraded all devices in the network to the new Cisco IOS image and until you
have verified that the new Cisco IOS image works properly in your network.
Cisco routinely removes old Cisco IOS versions from Cisco.com. See Product Bulletin 2863 for more
information:
http://www.cisco.com/en/US/products/sw/iosswrel/ps5187/prod_bulletin0900aecd80281c0e.html
You can copy the bin software image file on the flash memory to the appropriate TFTP directory on a
host by using the copy flash: tftp: privileged EXEC command.
Note Although you can copy any file on the flash memory to the TFTP server, it is time consuming to copy
all of the HTML files in the tar file. We recommend that you download the tar file from Cisco.com and
archive it on an internal host in your network.
You can also configure the switch as a TFTP server to copy files from one switch to another without
using an external TFTP server by using the tftp-server global configuration command. For more
information about the tftp-server command, see the “Basic File Transfer Services Commands” section
of the Cisco IOS Configuration Fundamentals Command Reference, Release 12.2 at this URL:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_command_reference_book09186a
00800811e0.html
Table 3 Cisco IOS Software Image Files
Filename Description
cbs30x0-ipbase-tar.122-50.se3.tar Cisco Catalyst Blade Switch 3020 for HP image file and
device manager files.
This image has Layer 2+ features.
cbs30x0-ipbasek9-tar.122-50.se3.tar Cisco Catalyst Blade Switch 3020 for HP cryptographic
image file and device manager files.
This image has the Kerberos and SSH features.

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Upgrading the Switch Software
Upgrading a Switch by Using the Device Manager
You can upgrade switch software by using the device manager. For detailed instructions, click Help.
Note When using the device manager to upgrade your switch, do not use or close your browser session after
the upgrade process begins. Wait until after the upgrade process completes.
Upgrading a Switch by Using the CLI
This procedure is for copying the combined tar file to the switch. You copy the file to the switch from a
TFTP server and extract the files. You can download an image file and replace or keep the current image.
To download software, follow these steps:
Step 1 Use Table 3 on page 4 to identify the file that you want to download.
Step 2 Download the software image file. If you have a SmartNet support contract, go to this URL, and log in
to download the appropriate files:
http://www.cisco.com/kobayashi/sw-center/sw-lan.shtml
Step 3 Copy the image to the appropriate TFTP directory on the workstation, and make sure that the TFTP
server is properly configured.
For more information, see Appendix B in the software configuration guide for this release.
Step 4 Log into the switch through the console port or a Telnet session.
Step 5 (Optional) Ensure that you have IP connectivity to the TFTP server by entering this privileged EXEC
command:
Switch# ping tftp-server-address
For more information about assigning an IP address and default gateway to the switch, see the software
configuration guide for this release.
Step 6 Download the image file from the TFTP server to the switch. If you are installing the same version of
software that is currently on the switch, overwrite the current image by entering this privileged EXEC
command:
Switch# archive download-sw /overwrite /reload
tftp:[[//location]/directory]/image-name.tar
The /overwrite option overwrites the software image in flash memory with the downloaded one.
The /reload option reloads the system after downloading the image unless the configuration has been
changed and not saved.
For //location, specify the IP address of the TFTP server.
For /directory/image-name.tar, specify the directory (optional) and the image to download. Directory
and image names are case sensitive.

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Installation Notes
This example shows how to download an image from a TFTP server at 198.30.20.19 and to overwrite
the image on the switch:
Switch# archive download-sw /overwrite tftp://198.30.20.19/imagename.tar
You can also download the image file from the TFTP server to the switch and keep the current image by
replacing the /overwrite option with the /leave-old-sw option.
Recovering from a Software Failure
For additional recovery procedures, see the “Troubleshooting” chapter in the software configuration
guide for this release.
Installation Notes
You can assign IP information to your switch by using these methods:
•The Express Setup program or the HP Onboard Administrator program described in the getting
started guide.
•The CLI-based setup program, as described in the hardware installation guide.
•The DHCP-based autoconfiguration, as described in the software configuration guide.
•Manually assigning an IP address, as described in the software configuration guide.
New Software Features
•These are the new software features for this release:
•Network Edge Access Topology (NEAT) with 802.1X switch supplicant, host authorization with
CISP, and auto enablement to authenticate a switch outside a wiring closet as a supplicant to another
switch.
•IEEE 802.1x with open access to allow a host to access the network before being authenticated.
•IEEE 802.1x authentication with downloadable ACLs and redirect URLs to allow per-user ACL
downloads from a Cisco Secure ACS server to an authenticated switch.
•Flexible-authentication sequencing to configure the order of the authentication methods that a port
tries when authenticating a new host.
•Multiple-user authentication to allow more than one host to authenticate on an 802.1x-enabled port.
•Cisco EnergyWise to manage the energy usage of power over Ethernet (PoE) entities.
•Wired location service to send location and attachment tracking information for connected devices
to a Cisco Mobility Services Engine (MSE).
•CPU utilization threshold trap to monitor CPU utilization.
•Support for the Cisco IOS Configuration Engine, previously referred to as the Cisco IOS CNS agent.
•LLDP-MED network-policy profile time, length, value (TLV) for creating a profile for voice and
voice-signalling by specifying the values for VLAN, class of service (CoS), differentiated services
code point (DSCP), and tagging mode

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Limitations and Restrictions
•RADIUS server load balancing to allow access and authentication requests to be distributed evenly
across a server group.
•Support for the SCP attribute in the CONFIG_COPY MIB.
•Support for the CISCO-AUTH-FRAMEWORK-MIB, CISCO-MAC-AUTH-BYPASS, and LLDP
MIBs.
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.
•“Cisco IOS Limitations” section on page 7
•“Device Manager Limitations” section on page 11
Cisco IOS Limitations
•“Configuration” section on page 7
•“Ethernet” section on page 8
•“IP” section on page 8
•“IP Telephony” section on page 8
•“Multicasting” section on page 9
•“QoS” section on page 10
•“SPAN and RSPAN” section on page 10
•“Trunking” section on page 10
•“VLAN” section on page 11
Configuration
•A static IP address might be removed when the previously acquired DHCP IP address lease expires.
This problem occurs under these conditions:
– When the switch is booted without a configuration (no config.text file in flash memory).
– When the switch is connected to a DHCP server that is configured to give an address to it (the
dynamic IP address is assigned to VLAN 1).
– When an IP address is configured on VLAN 1 before the dynamic address lease assigned to
VLAN 1 expires.
The workaround is to reconfigure the static IP address. (CSCea71176 and CSCdz11708)
•When connected to some third-party devices that send early preambles, a switch port operating at
100 Mp/s full duplex or 100 Mp/s half duplex might bounce the line protocol up and down. The
problem is observed only when the switch is receiving frames.
The workaround is to configure the port for 10 Mp/s and half duplex or to connect a hub or a
nonaffected device to the switch. (CSCed39091)

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Limitations and Restrictions
•When port security is enabled on an interface in restricted mode and the switchport block unicast
interface command has been entered on that interface, MAC addresses are incorrectly forwarded
when they should be blocked
The workaround is to enter the no switchport block unicast interface configuration command on
that specific interface. (CSCee93822)
•A traceback error occurs if a crypto key is generated after an SSL client session.
There is no workaround. This is a cosmetic error and does not affect the functionality of the switch.
(CSCef59331)
•When you enter the boot host retry timeout global configuration command to specify the amount
of time that the client should keep trying to download the configuration and you do not enter a
timeout value, the default value is zero, which should mean that the client keeps trying indefinitely.
However, the client does not keep trying to download the configuration.
The workaround is to always enter a non zero value for the timeout value when you enter the boot
host retry timeout timeout-value command. (CSCsk65142)
Ethernet
•Traffic on EtherChannel ports is not perfectly load-balanced. Egress traffic on EtherChannel ports
are distributed to member ports on load balance configuration and traffic characteristics like MAC
or IP address. More than one traffic stream might map to same member ports, based on hashing
results calculated by the ASIC.
If this happens, traffic distribution is uneven on EtherChannel ports.
Changing the load balance distribution method or changing the number of ports in the EtherChannel
can resolve this problem. Use any of these workarounds to improve EtherChannel load balancing:
– for random source-ip and dest-ip traffic, configure load balance method as src-dst-ip
– for incrementing source-ip traffic, configure load balance method as src-ip
– for incrementing dest-ip traffic, configure load balance method as dst-ip
– Configure the number of ports in the EtherChannel so that the number is equal to a power of 2
(for example, 2, 4, or 8)
For example, with load balance configured as dst-ip with 150 distinct incrementing destination
IP addresses, and the number of ports in the EtherChannel set to either 2, 4, or 8, load
distribution is optimal. (CSCeh81991)
IP
•When the rate of received DHCP requests exceeds 2,000 packets per minute for a long time, the
response time might be slow when you are using the console. The workaround is to use rate limiting
on DHCP traffic to prevent a denial of service attack from occurring. (CSCeb59166)
IP Telephony
•After you change the access VLAN on a port that has IEEE 802.1x enabled, the IP phone address is
removed. Because learning is restricted on IEEE 802.1x-capable ports, it takes approximately 30
seconds before the address is relearned. No workaround is necessary. (CSCea85312)

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Limitations and Restrictions
Multicasting
•If the number of multicast routes and Internet Group Management Protocol (IGMP) groups are more
than the maximum number specified by the show sdm prefer global configuration command, the
traffic received on unknown groups is flooded in the received VLAN even though the show ip igmp
snooping multicast-table privileged EXEC command output shows otherwise. The workaround is
to reduce the number of multicast routes and IGMP snooping groups to less than the maximum
supported value. (CSCdy09008)
•IGMP filtering is applied to packets that are forwarded through hardware. It is not applied to packets
that are forwarded through software. Hence, with multicast routing enabled, the first few packets are
sent from a port even when IGMP filtering is set to deny those groups on that port. There is no
workaround. (CSCdy82818)
•If an IGMP report packet has two multicast group records, the switch removes or adds interfaces
depending on the order of the records in the packet:
– If the ALLOW_NEW_SOURCE record is before the BLOCK_OLD_SOURCE record, the
switch removes the port from the group.
– If the BLOCK_OLD_SOURCE record is before the ALLOW_NEW_SOURCE record, the
switch adds the port to the group.
There is no workaround. (CSCec20128)
•When IGMP snooping is disabled and you enter the switchport block multicast interface
configuration command, IP multicast traffic is not blocked.
The switchport block multicast interface configuration command is only applicable to non-IP
multicast traffic.
There is no workaround. (CSCee16865)
•Incomplete multicast traffic can be seen under either of these conditions:
– You disable IP multicast routing or re-enable it globally on an interface.
– A switch mroute table temporarily runs out of resources and recovers later.
The workaround is to enter the clear ip mroute privileged EXEC command on the interface.
(CSCef42436)
After you configure a switch to join a multicast group by entering the ip igmp join-group
group-address interface configuration command, the switch does not receive join packets from the
client, and the switch port connected to the client is removed from the IGMP snooping forwarding
table.
Use one of these workarounds:
– Cancel membership in the multicast group by using the no ip igmp join-group group-address
interface configuration command on an SVI.
– Disable IGMP snooping on the VLAN interface by using the no ip igmp snooping vlan vlan-id
global configuration command. (CSCeh90425)
•A switch drops unicast traffic under these conditions:
– The switch belongs to a Layer 2 ring.
– More than 800 Mbps of multicast traffic is sent in both directions on the interface.
When multicast traffic is sent in one direction and unicast traffic is sent in another, unicast traffic is
dropped at the multicast traffic source port.
The workaround is to apply a policy map so that the least significant traffic is discarded.
(CSCsq83882)

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Limitations and Restrictions
QoS
•Some switch queues are disabled if the buffer size or threshold level is set too low with the mls qos
queue-set output global configuration command. The ratio of buffer size to threshold level should
be greater than 10 to avoid disabling the queue. The workaround is to choose compatible buffer sizes
and threshold levels. (CSCea76893)
•When auto-QoS is enabled on the switch, priority queuing is not enabled. Instead, the switch uses
shaped round robin (SRR) as the queuing mechanism. The auto-QoS feature is designed on each
platform based on the feature set and hardware limitations, and the queuing mechanism supported
on each platform might be different. There is no workaround. (CSCee22591)
•A QoS service policy with a policy map containing more than 62 policers cannot be added to an
interface by using the service-policy interface configuration command.
The workaround is to use policy maps with 62 or fewer policers. (CSCsc59418)
SPAN and RSPAN
•Egress SPAN routed packets (both unicast and multicast) show the incorrect source MAC address.
For remote SPAN packets, the source MAC address should be the MAC address of the egress VLAN,
but instead the packet shows the MAC address of the RSPAN VLAN. For local SPAN packets with
native encapsulation on the destination port, the packet shows the MAC address of VLAN 1. This
problem does not appear with local SPAN when the encapsulation replicate option is used. This
limitation does not apply to bridged packets. The workaround is to use the encapsulate replicate
keywords in the monitor session global configuration command. Otherwise, there is no
workaround. This is a hardware limitation. (CSCdy81521)
•During periods of very high traffic when two RSPAN source sessions are configured, the VLAN ID
of packets in one RSPAN session might overwrite the VLAN ID of the other RSPAN session. If this
occurs, packets intended for one RSPAN VLAN are incorrectly sent to the other RSPAN VLAN.
This problem does not affect RSPAN destination sessions. The workaround is to configure only one
RSPAN source session. This is a hardware limitation. (CSCea72326)
•Cisco Discovery Protocol (CDP), VLAN Trunking Protocol (VTP), and Port Aggregation Protocol
(PAgP) packets received from a SPAN source are not sent to the destination interfaces of a local
SPAN session. The workaround is to use the monitor session session_number destination
{interface interface-id encapsulation replicate}global configuration command for local SPAN.
(CSCed24036)
Trunking
•The switch treats frames received with mixed encapsulation (IEEE 802.1Q and Inter-Switch Link
[ISL]) as frames with FCS errors, increments the error counters, and the port LED blinks amber.
This happens when an ISL-unaware device receives an ISL-encapsulated packet and forwards the
frame to an IEEE 802.1Q trunk interface. There is no workaround. (CSCdz33708)
•IP traffic with IP options set is sometimes leaked on a trunk port. For example, a trunk port is a
member of an IP multicast group in VLAN X but is not a member in VLAN Y. If VLAN Y is the
output interface for the multicast route entry assigned to the multicast group and an interface in
VLAN Y belongs to the same multicast group, the IP-option traffic received on an input VLAN
interface other than one in VLAN Y is sent on the trunk port in VLAN Y because the trunk port is
forwarding in VLAN Y, even though the port has no group membership in VLAN Y. There is no
workaround. (CSCdz42909).

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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 dynamic ARP inspection is configured on a VLAN, and the ARP traffic on a port in the VLAN
is within the configured rate limit, the port might go into an error-disabled state. The workaround is
to configure the burst interval to more than 1 second. (CSCse06827)
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 start.
The workaround is to click Yes when you are prompted to accept the certificate. (CSCef45718)
•When the physical UID LED of the switch is on, it is blue. However, when the image of this LED
on the device manager Front Panel view is on, it is green.
There is no workaround (CSCsd98457).
Important Notes
•“Cisco IOS Notes” section on page 11
•“Device Manager Notes” section on page 12
Cisco IOS Notes
•The behavior of the no logging on global configuration command changed in Cisco IOS
Release 12.2(18)SE and later. You can only use the logging on and then the no logging console
global configuration commands to disable logging to the console. (CSCec71490)
•In Cisco IOS Release 12.2(25)SEC, the implementation for multiple spanning tree (MST) changed
from the previous release. Multiple STP (MSTP) complies with the IEEE 802.1s standard. Previous
MSTP implementations were based on a draft of the IEEE 802.1s standard.
•If the switch requests information from the Cisco Secure Access Control Server (ACS) and the
message exchange times out because the server does not respond, a message similar to this appears:
00:02:57: %RADIUS-4-RADIUS_DEAD: RADIUS server 172.20.246.206:1645,1646 is not
responding.
If this message appears, make sure that there is network connectivity between the switch and the
ACS. You should also make sure that the switch has been properly configured as an AAA client on
the ACS.

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Important Notes
•Cisco IOS Release 12.2(40)SE and later
If the switch has interfaces with automatic QoS for voice over IP (VoIP) configured and you upgrade
the switch software to Cisco IOS Release 12.2(40)SE (or later), when you enter the auto qos voip
cisco-phone interface configuration command on another interface, you might see this message:
AutoQoS Error: ciscophone input service policy was not properly applied
policy map AutoQoS-Police-CiscoPhone not configured
If this happens, enter the no auto qos voip cisco-phone interface command on all interface with this
configuration to delete it. Then enter the auto qos voip cisco-phone command on each of these
interfaces to reapply the configuration.
Device Manager Notes
•We recommend this browser setting to more quickly display the device manager from Microsoft Internet
Explorer.
From Microsoft Internet Explorer:
1. Choose Tool s > Internet Options.
2. Click Settings in the Temporary Internet files area.
3. From the Settings window, choose Automatically.
4. Click OK.
5. Click OK to exit the Internet Options window.
•The HTTP server interface must be enabled to display the device manager. By default, the HTTP
server is enabled on the switch. Use the show running-config privileged EXEC command to see if
the HTTP server is enabled or disabled.
•If you are not using the default method of authentication (the enable password), you need to
configure the HTTP server interface with the method of authentication used on the switch.
Beginning in privileged EXEC mode, follow these steps to configure the HTTP server interface:
Command Purpose
Step 1 configure terminal Enter global configuration mode.
Step 2 ip http authentication {aaa | enable |
local}
Configure the HTTP server interface for the type of authentication that
you want to use.
•aaa—Enable the authentication, authorization, and accounting feature.
You must enter the aaa new-model interface configuration command
for the aaa keyword to appear.
•enable—Enable password, which is the default method of HTTP
server user authentication, is used.
•local—Local user database, as defined on the Cisco router or access
server, is used.
Step 3 end Return to privileged EXEC mode.
Step 4 show running-config Verify your entries.

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Open Caveats
•The device manager uses the HTTP protocol (the default is port 80) and the default method of
authentication (the enable password) to communicate with the switch through any of its Ethernet
ports and to allow switch management from a standard web browser.
If you change the HTTP port, you must include the new port number when you enter the IP address
in the browser Location or Address field (for example, http://10.1.126.45:184 where 184 is the new
HTTP port number). You should write down the port number through which you are connected. Use
care when changing the switch IP information.
•If you use Internet Explorer Version 5.5 and select a URL with a nonstandard port at the end of the
address (for example, www.cisco.com:84), you must enter http:// as the URL prefix. Otherwise, you
cannot start the device manager.
Open Caveats
This section describes the open severity 3 Cisco IOS configuration caveats with possible unexpected
activity in this software release:
•CSCso96778
When you use the ipv6 address dhcp interface configuration command on an interface that is
configured in router mode, other addresses on the prefix associated with the new address might not
be accessible.
The workaround is to use the ipv6 address dhcp interface configuration command on an interface
that is configured in host mode, or configure a static route to the prefix through the interface.
•CSCta57846
The switch unexpectedly reloads when copying a configuration file from a remote server or from
flash memory containing logging file flash:
The workaround is to enter the logging file flash:filename global configuration command to
configure logging to flash instead of copying to flash.
Resolved Caveats
•“Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE3” section on page 13
•“Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE2” section on page 15
•“Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE1” section on page 15
•“Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE1” section on page 15
Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE3
•CSCsl72774
Memory allocation errors no longer occur when the Cisco Express Forwarding (CEF) consistency
checkers have been enabled. The CEF consistency checkers have been enabled by default. They can
also be enabled by using these global configuration commands:
cef table consistency-check ipv4
cef table consistency-check ipv6

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Resolved Caveats
•CSCso57496
A switch no longer fails when you enter the configure replace privileged EXEC command, and a
banner is already present in the switch configuration.
•CSCso90107
You can now query the bgpPeerTable MIB for VPN/VRF interfaces.
•CSCsq51052
The output of the show ip ssh privileged EXEC command no longer displays SSH Enabled -
version 2.99. Instead, a correct SSH version (1.5, 1.99 or 2.0) now appears.
•CSCsx49718
Re-authentication now occurs on a port under these conditions:
– The port is in single-host mode.
– The port is configured with the authentication event no-response action authorize vlan
vlan-number command.
– An EAPOL start packet is sent to the port.
•CSCsy66686
The switch no longer reloads when the default port cost of service (CoS) value is updated on a port
that has a policy map configured and CoS override enabled with the mls qos cos override privileged
EXEC command.
•CSCsy72669
If a link failure occurs on a secondary edge port, preemption now occurs after the link comes up.
•CSCsz12381
When open1x authentication and MAC authentication bypass are enabled on a port, an IP phone is
connected to the port, and DHCP snooping is enabled on the switch, DHCP traffic is now forwarded
on the voice VLAN before open 1x authentication times out and the switch uses MAC authentication
bypass to authorize the port.
•CSCsz13490
The switch no longer reloads when you enter several key strokes while in interface-range
configuration mode.
•CSCsz14369
If MAC authentication bypass is enabled and the RADIUS server is not available, the switch now
tries to re-authenticate a port after a server becomes available.
•CSCsz77920
If you are configuring Flexible Authentication Ordering with web authentication on a switch port
and the switch uses 802.1x to authenticate the host, Address Resolution Protocol (ARP) now works
properly.
•CSCsz79652
A memory leak no longer occurs when Cisco Network Assistant is polling the switch and the ip http
server or ip http-secure-server global configuration command is enabled.
•CSCta32597
A switch no longer fails when a host moves from a dynamically assigned VLAN to a configured
VLAN.

15
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Resolved Caveats
•CSCta36155
A switch configured with 802.1x and port security on the same ports no longer might inappropriately
put the ports into an error-disabled state.
•CSCta56469
Moving a PC between two IP Phones without disconnecting either phone from the switch no longer
triggers a port-security violation.
•CSCta67777
A port security violation error no longer occurs when MAC address sticky learning is enabled on a
port and a CDP is enabled on a connected IP Phone.
Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE2
•CSCsy48370
The switch no longer fails when you use the vacant-message line configuration command.
•CSCsz81762
If you enable automatic server testing through the radius-server host ip-address [test username
name] global configuration command, the switch no longer sends requests to the RADIUS server if
the server is not available.
•CSCsw45277
Third-party IP phones now automatically power up when reconnected to enabled PoE ports on the
switch.
•CSCsy27389
The switch now changes the time in an EnergyWise recurrence event when the local time changes
to daylight saving time.
•CSCsy57970
When IEEE 802.1x multiple authentication mode is configured on a port, two PCs have been
authenticated, and the first PC is disconnected, the second PC now receives and forwards traffic on
the port.
CSCsy91579
A switch no longer randomly resets due to memory corruption.
Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE1
•CSCsb46724
If the connection to a primary AAA server fails, the backup server is now queried for login access.
•CSCsr92741
When a TCP packet with all flags set to zero (at the TCP level) is sent to a remote router, the remote
(destination) router no longer returns an ACK/RST packet back to the source of the TCP segment.
•CSCsy24510
The switch now accepts an encrypted secret password.

16
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Resolved Caveats
•CSCsy41470
The switch no longer runs out of memory when an smnpwalk, snmpget, or snmpbulkwalk is run on
the CISCO-ENERGYWISE-MIB.
Cisco IOS Caveats Resolved in Cisco IOS Release 12.2(50)SE
•CSCsq26873
The server no longer attempts re-authentication every ten minutes when a switch is configured with
the dot1x timeout reauth-period server interface configuration command.
•CSCsq67398
Traffic is now forwarded to the interfaces that are configured with static multicast MAC addresses
after the switch is reloaded.
Note You cannot configure the static MAC address (unicast or multicast) entries on EtherChannel
member interfaces, or add an interface into the EtherChannel if that interface is associated with
a static MAC address entry.
•CSCsq89564
If the switch uses 802.1x authentication with VLAN assignment, it no longer uses the VLAN
assignment with different authorization attempts, such as user authentication or re-authentication.
•CSCsr50766
When keepalive is disabled on an interface, the interface is no longer put in an error-disabled state
when it receives keepalive packets.
•CSCsr64007
The Switched Port Analyzer (SPAN) destination port no longer detects IPv6 multicast packets from
a VLAN that is not being monitored by SPAN.
•CSCsr65689
This message no longer appears in the log during the system bootup on a switch that is running
Cisco IOS 12.2(50)SE:
•CSCsu10065
When SFP ports are configured as status multicast router ports, IPv6 Multicast Listener Discovery
(MLD) snooping now works after the switch reloads.
•CSCsu45951
A link is now established between a server and a switch when the server port is configured to not
autonegotiate the speed.
•CSCsu59214
The Set TxPortFifo SRR Failed message no longer appears when you enter both the srr-queue
bandwidth shape 200 0 2 200 and the priority-queue out interface configuration commands on the
same interface.
•CSCsu88168
The switch no longer reloads when the Forwarding Information Base (FIB) adjacency table is added.

17
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Documentation Updates
•CSCsv63345
When you enter the show interface command, the bandwidth and delay fields now display correct
information for all ports.
•CSCsv64023
A switch port configured for IGMP snooping no longer lose its group membership when the port
receives a query comes from an upstream device that is not configured for IGMP snooping.
•CSCsv89005
A switch configured with class-based policies that are applied and active on at least one interface no
longer might reload or display CPU hog messages during SNMP polling for the ciscoCBQosMIB.
•CSCsv91358
When you have entered the vlan dot1q tag native global configuration command to configure a
switch to tag native VLAN frames on 802.1Q trunk ports, and you configure a new voice VLAN on
an access port, the MAC address of a connected PC is now correctly relearned.
•CSCsw30249
When a switch virtual interface (SVI) is configured as unnumbered and is pointing to a loopback
interface, the switch no longer fails when the SVI receives a packet.
•CSCsw45337
When LLDP is enabled and a voice VLAN is configured, the L2 Priority and DSCP Value fields in
the LLDP type, length, and value descriptions (TLVs) are now correctly marked to give the voice
traffic the correct DSCP and Layer 2 priority.
•CSCsw65548
Switch ports no longer attempt authentication at the interval configured for the port security timer
instead of the configured IEEE 802.1x timer.
•CSCsw68528
On switches running Cisco IOS Release 12.2(44)SE or 12.2(46)SE, when you enter the show mvr
interface interface-id members privileged EXEC command to see status of an MVR port, an MVR
member port that is not connected always shows as ACTIVE.
The workaround is to use the show mvr interface interface-id or the show mvr members privileged
EXEC command. These command outputs show the correct status of an MVR port.
•CSCsw69015
When you enter the mvr vlan vlan-id global configuration command to create an MVR VLAN and
enable MVR on the switch by entering the mvr global configuration command, if you enter the show
mvr interface interface-id members privileged EXEC command, the output shows the MVR
groups on the interface. However, if you enable MVR first and then create the MVR VLAN, the
MVR groups are not displayed correctly.
The workaround, if the groups are not displaying correctly, is to create the MVR VLAN before
enabling MVR. The configuration then displays correctly.
•CSCsx27883
The MIB chassisPs2Status no longer returns the incorrect value, 1, for a secondary power supply.
Documentation Updates
•“Updates to the Command Reference” section on page 18

18
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Documentation Updates
•“Updates to the System Message Guide” section on page 20
•“Updates to the Getting Started Guide” section on page 24
Updates to the Command Reference
debug authentication
Use the debug authentication privileged EXEC command to enable debugging of the authentication
settings on an interface. Use the no form of this command to disable debugging.
debug authentication {all | errors | events | sync | feature [all] [acct] [auth_fail_vlan]
[auth_policy] [autocfg] [critical] [dhcp] [guest_vlan] [mab_pm] [mda] [multi_auth]
[switch_pm] [switch_sync] [vlan_assign] [voice] [webauth] [all | errors | events]}
no debug authentication {all | errors | events | sync | feature [all] [acct] [auth_fail_vlan]
[auth_policy] [autocfg] [critical] [dhcp] [guest_vlan] [mab_pm] [mda] [multi_auth]
[switch_pm] [switch_sync] [vlan_assign] [voice] [webauth] [all | errors | events]}
Syntax Description acct (Optional) Display authentication manager accounting information.
all (Optional) Display all authentication manager debug messages.
auth_fail_vlan (Optional) Display authentication manager errors for the restricted VLAN.
auth_policy (Optional) Display authentication policy messages.
autocfg (Optional) Display autoconfiguration authentication manager debug
messages.
critical (Optional) Display the inaccessible authentication bypass messages.
Note The inaccessible authentication bypass feature is also referred to as
critical authentication or the authentication, authorization, and
accounting (AAA) fail policy.
dhcp (Optional) Display authentication manager debug messages on DHCP
dynamic address-enable interfaces.
errors (Optional) Display all authentication manager error debug messages.
events (Optional) Display all authentication manager event debug messages,
including registry and miscellaneous events.
feature (Optional) Display authentication manager feature debug messages
guest_vlan (Optional) Display guest VLAN authentication manager messages.
mab_pm (Optional) Display MAC authentication manager bypass authentication
debug messages.
mda (Optional) Display multidomain authentication manager debug messages.
multi_auth (Optional) Display multi-authentication manager debug authentication
messages.
switch_pm (Optional) Display switch port manager messages.
switch_sync (Optional) Display synchronization messages between the switch, the
authentication server, and the connected devices.

19
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Documentation Updates
Defaults Authentication debugging is disabled.
Command Modes Privileged EXEC
Command History
Usage Guidelines The undebug authentication command is the same as the no debug authentication command.
Related Commands
sync (Optional) Display operational synchronization authentication manager
debug messages.
vlan_assign (Optional) Display the VLAN-assignment debug messages.
voice (Optional) Display the voice-VLAN debug messages.
webauth (Optional) Display web authentication manager debug messages.
Release Modification
12.2(50)SE This command was introduced.
Command Description
authentication
control-direction
Configures the port mode as unidirectional or bidirectional.
authentication
event
Sets the action for specific authentication events.
authentication
fallback
Configures a port to use web authentication as a fallback method for clients that
do not support IEEE 802.1x authentication.
authentication
host-mode
Sets the authorization manager mode on a port.
authentication open Enables or disables open access on a port.
authentication
order
Sets the order of authentication methods used on a port.
authentication
periodic
Enables or disables reauthentication on a port.
authentication
port-control
Enables manual control of the port authorization state.
authentication
priority
Adds an authentication method to the port-priority list.
authentication
violation
Configures the violation modes that occur when a new device connects to a port
or when a new device connects to a port after the maximum number of devices
are connected to that port.
show
authentication
Displays information about authentication manager events on the switch.

20
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(50)SE and Later
OL-18274-02
Documentation Updates
Updates to the System Message Guide
•“New System Messages” section on page 20
•“Deleted System Messages” section on page 22
New System Messages
Error Message ACLMGR-2-NOVMR: Cannot generate hardware representation of access list
[chars]
Explanation There are insufficient resources available to create a hardware representation of the
ACL. A lack of available logical operation units or specialized hardware resources can cause this
problem. Logical operation units are needed for a TCP flag match or a test other than eq (ne, gt, lt,
or range) on TCP, UDP, or SCTP port numbers.
Recommended Action Modify the ACL configuration to use fewer resources, or rename the ACL with
a name or number that alphanumerically precedes the other ACL names or numbers.
Error Message %DOT1X-5-FAIL: Authentication failed for client ([chars]) on Interface
[chars]
Explanation Authentication was unsuccessful. The first [chars] is the hostname, and the second
[chars] is the interface.
Recommended Action No action is required.
Error Message %DOT1X-5-SUCCESS: Authentication successful for client ([chars]) on
Interface [chars]
Explanation Authentication was successful. The first [chars] is the host name, and the second [chars]
is the interface.
Recommended Action No action is required.
Error Message %DOT1X_SWITCH-4-PROC_START_ERR: Unable to start dot1x switch process.
Explanation The software could not start the 802.1x authentication process.
Recommended Action Use the reload privileged EXEC command to reload the switch.
Error Message %EC-5-MINLINKS_MET: Port-channel [chars] is up as its bundled ports
([dec]) meets min-links
Recommended Action The administrative configuration of minimum links is equal to or less than the
number of EtherChannel ports. The port channel is up. [chars] is the EtherChannel, and [dec] is the
EtherChannel group number.
Recommended Action No action is required.