HP 3020 Instruction Manual

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Release Notes for the Cisco Catalyst
Blade Switch 3020 for HP,
Cisco IOS Release 12.2(55)SE and Later
Revised March 28, 2012
Cisco IOS Release 12.2(55)SE runs on the Cisco Catalyst Blade Switch 3020 for HP, referred to as the
switch. 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(55)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 3.
For the complete list of Cisco Catalyst Blade Switch 3020 for HP documentation, see the “Related
Documentation” section on page 34.
You can download the switch software from this site (registered Cisco.com users with a login password):
http://www.cisco.com/cisco/web/download/index.html
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

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System Requirements
•“Important Notes” section on page 12
•“Open Caveats” section on page 13
•“Resolved Caveats” section on page 14
•“Documentation Updates” section on page 24
•“Related Documentation” section on page 34
•“Obtaining Documentation, Obtaining Support, and Security Guidelines” section on page 34
System Requirements
•“Hardware Supported” section on page 2
•“Device Manager System Requirements” section on page 2
Hardware Supported
Table 1 Supported Hardware
Device Manager System Requirements
•“Hardware Requirements” section on page 2
•“Software Requirements” section on page 2
Hardware Requirements
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
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 and -SX Cisco IOS Release 12.2(35)SE
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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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Upgrading the Switch Software
The device manager verifies the browser version when starting a session, and it does not require a
plug-in.
Upgrading the Switch Software
•“Finding the Software Version and Feature Set” section on page 3
•“Deciding Which Files to Use” section on page 3
•“Archiving Software Images” section on page 4
•“Upgrading a Switch by Using the Device Manager” section on page 4
•“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.
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.

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Upgrading the Switch Software
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/prod/collateral/iosswrel/ps8802/ps6969/ps1835/prod_bulletin0900aecd80
281c0e.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/docs/ios/fundamentals/command/reference/cf_t1.html
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.
Table 3 Cisco IOS Software Image Files
Filename Description
cbs30x0-ipbase-tar.122-55.se.tar Cisco Catalyst Blade Switch 3020 for HP image file and
device manager files.
This image has Layer 2+ features.
cbs30x0-ipbasek9-tar.122-55.se.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 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:
a. If you are a registered customer, go to this URL and log in.
http://www.cisco.com/cisco/web/download/index.html
b. Navigate to Switches > Blade Switches.
c. Navigate to your switch model.
d. Click IOS Software, then select the latest IOS release.
Download the image you identified in Step 1.
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.
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/image-name.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.

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Installation Notes
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
•Auto-QoS enhancements that add automatic configuration classification of traffic flow from video
devices, such as the Cisco Telepresence System and Cisco Surveillance Camera.
•Support for CDP and LLDP enhancements for exchanging location information with video end
points for dynamic location-based content distribution from servers.
•Support for dynamic creation or attachment of an auth-default ACL on a port that has no configured
static ACLs configured.
•Support for VLAN assignment on a port configured for multi-auth mode. The RADIUS server
assigns a VLAN to the first host to authenticate on the port, and subsequent hosts use the same
VLAN. Voice VLAN assignment is supported for one IP phone.
•Memory consistency check routines to detect and correct invalid ternary content addressable
memory (TCAM) table entries.
•Support for the Security Group Tag (SCT) Exchange Protocol (SXP) component of Cisco TrustSec,
a security architecture using authentication, encryption, and access control.
•AAA guarantee-first support for enabling or disabling system accounting as the first record.
•An option to suppress verbose 802.1x, authentication manager, and MAC authentication bypass
syslog messages.
•Support for Embedded Event Manager (EEM) for device and system management to monitor key
system events and then act on them.
•Support for QoS class-default policy placement.
•Support for OSPF for routed access to enable customers to extend Layer 3 routing capabilities to the
access or wiring closet. This feature does not support multiple OSPFv2 and OSPFv3 instances
without route restrictions.
•MAC move to allow hosts (including the hosts connected to an IP phone) to move across ports within
the same switch without any restrictions to enable mobility. With MAC move, the switch treats the
reappearance of the same MAC address on another port as a completely new MAC address.

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Limitations and Restrictions
MAC replace can be configured so that when a host disconnects from a port without ending its
session, the session can be ended and the authentication sequence reset when a new MAC address
connects to the port.
•Support for increasing the NVRAM buffer size for saving large configuration files.
•ARP tracking probe enhancement to specify a source IP address for a VLAN.
•Network Edge Access Topology (NEAT) controls the supplicant port during the supplicant
authentication period. When you connect a supplicant switch to the authenticator switch, the
authenticator port could be error-disabled when receiving Spanning Tree Protocol (STP) bridge
protocol data unit (BPDU) packets and the supplicant switch is not authenticated. The NEAT feature
is now enhanced to block the supplicant port during authentication, to ensure authentication
completes.
Use the dot1x supplicant controlled transient global configuration command to control access to
the supplicant port during authentication. Use the no form of this command to provide access to the
supplicant port during the authentication period
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
•“Caveats” section on page 11
Cisco IOS Limitations
•“Configuration” section on page 7
•“Ethernet” section on page 8
•“IP” section on page 9
•“IP Telephony” section on page 9
•“Multicasting” section on page 9
•“Quality of Service (QoS)” section on page 10
•“SPAN and RSPAN” section on page 10
•“Trunking” section on page 11
•“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).

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Limitations and Restrictions
– 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)
•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)

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Limitations and Restrictions
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)
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:

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Limitations and Restrictions
– 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)
Quality of Service (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)
•If you configure a large number of input interface VLANs in a class map, a traceback message
similar to this might appear:
01:01:32: %BIT-4-OUTOFRANGE: bit 1321 is not in the expected range of 0 to 1024
There is no impact to switch functionality.
There is no workaround. (CSCtg32101)
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)

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Limitations and Restrictions
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).
•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).
Caveats
The following limitations are reported as caveats:
•CSCta72141
The bootloader label is incorrect and displays “CISCO DEVELOPMENT TEST VERSION.”
However, the actual bootloader software is the correct version with the correct functionality.
There is no workaround. It does not impact functionality.

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Important Notes
Important Notes
•“Cisco IOS Notes” section on page 12
•“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.
•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.

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Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
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Open Caveats
•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:
•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
Device Manager
•CSCtf57222.
The chassis ID for the CBS3020 does not appear in the Device Manager window.
There is no workaround.
Cisco IOS
•CSCtf57222
When you use the device manager, the dashboard does not display the switch chassis ID.
There is no workaround.
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.

14
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
•CSCth94904
An internal switch port is down when one of these HP Flex 10-Gigabit Ethernet network interface
cards (NICs) is up:
– Flex 522m Mezz
– Flex 542m Mezz
– Flex 552m Mezz
The workaround is to use the speed nonegotiate interface configuration command on the internal
port.
•CSCto57605
If the Dynamic Trunking Protocol (DTP) is set to speed nonegotiate for two switches that interface
each other, and the speed/duplex is configured as full/1000, the speed/duplex configuration of one
of the switches changes to auto/auto when the switch is restarted. The port channel becomes
incompatible and the second switch’s operation is suspended. This problem applies only to the
1000BASE-LX interface.
The workaround is to enter the shutdown interface configuration command followed by the no
shutdown command.
•CSCtx73953
A port that is programatically configured with auth-default ACL does not allow any traffic on the
switch except DHCP traffic. If the configurations on the interface are cleared and the interface is
restarted, the auth-default ACL configuration remains and the problem persists.
There is no workaround.
Resolved Caveats
•Caveats Resolved in Cisco IOS Release 12.2(55)SE5, page 14
•Caveats Resolved in Cisco IOS Release 12.2(55)SE4, page 17
•Caveats Resolved in Cisco IOS Release 12.2(55)SE3, page 19
•Caveats Resolved in Cisco IOS Release 12.2(55)SE2 and Earlier, page 20
Caveats Resolved in Cisco IOS Release 12.2(55)SE5
•CSCsy43147
During a Telnet session, the router crashes when the TACACS+ server is configured or unconfigured
(tacacs-server host command) using the single-connection keyword.
The workaround is to not use the single-connection keyword.
•CSCtb35715
When you enter the show running-config interface configuration command, IP Service Level
Agreement notifications are shown as enabled even when you have not enabled this configuration
using the ip sla enable reaction-alerts interface configuration command.
There is no workaround.

15
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
•CSCtc18841
If local proxy Address Resolution Protocol (ARP) is configured on the VLAN interface, the ARP
entry for the Hot Standby Router Protocol (HSRP) enters into an incomplete state.
The workaround is to remove the proxy ARP feature on the VLAN interface (by using the no ip
local-proxy-arp interface configuration command) and restart the interface.
•CSCtg38468
When AAA authorization is used with TACACS+, an error is displayed if the banner message
(banner exec global configuration command) starts with a blank character.
The workaround is to not start the banner message with a blank character.
•CSCth00398
If the no vtp VLAN configuration command is used on a port that receives VTP updates, the switch
does not process Layer 2 control traffic (STP and CDP) after some time.
The workaround is to configure VTP on the port or to not use the no vtp command.
•CSCtj22354
The switch fails when LLDP data units with Type Length Value (TLV) of more than 10 management
addresses (MA) are received.
The workaround is to disable the sending of LLDP MA TLVs on peer hosts.
•CSCtj88307
When you enter the default interface, switchport, or no switchport interface configuration
command on the switch, this message appears:
EMAC phy access error, port 0, retrying......
There is no workaround.
•CSCtj89743
CPU usage is high when a device connected to the switch is accessed using the https://IP_address
command on the router.
The workaround is to reload the device.
•CSCtn10697
The switch crashes when DCHP snooping is enabled with value 125 and an offer packet is received.
There is no workaround.
•CSCto72927
If a Tcl policy is copied to the router, the router fails when an event manager policy is configured.
There is no workaround.
•CSCtq09233
If a CLI configuration text file is copied from a Windows system to the switch, a space is appended
to the end of the macro description command when the file is read from the flash of the switch. This
leads to errors resulting in high CPU utilization on the switch. Another possible issue is that the
macro is not removed when the link goes down or the connected device is removed from the switch.
The workaround is to copy the configuration file from a non-Windows system (like UNIX or Linux)
or convert the file to an appropriate UNIX format before copying.

16
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
•CSCtr28857
A vulnerability in the Multicast Source Discovery Protocol (MSDP) implementation of Cisco IOS
Software and Cisco IOS XE Software could allow a remote, unauthenticated attacker to cause a
reload of an affected device. Repeated attempts to exploit this vulnerability could result in a
sustained denial of service (DoS) condition.
Cisco has released free software updates that address this vulnerability. Workarounds that mitigate
this vulnerability are available. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-msdp
•CSCtr91106
A vulnerability exists in the Cisco IOS Software that may allow a remote application or device to
exceed its authorization level when authentication, authorization, and accounting (AAA)
authorization is used. This vulnerability requires that the HTTP or HTTPS server is enabled on the
Cisco IOS device.
Products that are not running Cisco IOS Software are not vulnerable.
Cisco has released free software updates that address these vulnerabilities.
The HTTP server may be disabled as a workaround for the vulnerability described in this advisory.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-pai
•CSCts34688
The switch crashes due to the "HACL Acl Manager" memory fragmentation when a large access
control list (ACL) is modified.
The workaround is add or remove ACE entries in sequential order when the ACL is modified.
•CSCts75641
Routing Information Protocol (RIP) Version 2 packets egressing an 801.1Q tunnel interface are
triplicated.
There is no workaround.
•CSCtt16051
Cisco IOS Software contains a vulnerability in the Smart Install feature that could allow an
unauthenticated, remote attacker to cause a reload of an affected device if the Smart Install feature
is enabled. The vulnerability is triggered when an affected device processes a malformed Smart
Install message on TCP port 4786.
Cisco has released free software updates that address this vulnerability. There are no workarounds
to mitigate this vulnerability.
This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20120328-smartinstall

17
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
•CSCtt37202
If a client switch is authorized using MAC Authentication Bypass (MAB), and then by using the
802.1x standard and dynamic VLAN assignment, the MAC address of the switch is not updated in
the MAC address table of slave switches.
The workaround is to not use both the 802.1x and dynamic VLAN assignment configurations for the
client switch.
•CSCtu17483
The switch crashes when an IP phone that uses LLDP and authenticates itself using MAC
Authentication Bypass (MAB) or 802.1x is physically disconnected and reconnected to the switch
port.
The workaround is to remove the aaa authorization network default group SG-PBA global
configuration command.
Caveats Resolved in Cisco IOS Release 12.2(55)SE4
•CSCta85026
The Dynamic Host Configuration Protocol (DHCP) CLI does not accept white spaces in raw ASCII
option in the DHCP pool configuration submode. This issue is seen in Cisco IOS Release
12.4(24)T1 and later.
There is no workaround.
•CSCtg11547
In a VPN Routing and Forwarding (VRF) aware setup, messages are not sent to the syslog server.
This issue applies to Cisco IOS Release 12.2(53)SE and 12.2(53)SE1. This situation does not occur
if system logging is configured in the global table.
This problem has been corrected.
•CSCth03648
When two traps are generated by two separate processes, the switch fails if one process is suspended
while the other process updates some variables used by the first process.
The workaround is to disable all SNMP traps.
•CSCth87458
A memory leak occurs in the SSH process, and user authentication is required.
The workaround is to allow SSH connections only from trusted hosts.

18
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
•CSCti37197
If a tunnel interface is configured with Cisco Discovery Protocol (CDP), the switch fails when it
receives a CDP packet.
The workaround is to disable CDP on the interface by using the no cdp enable interface
configuration command.
•CSCtj56719
The switch fails when the Differentiated Services Code Point (DSCP) mutation name is longer than
25 characters.
The workaround is to configure DSCP mutation names with fewer than 25 characters.
•CSCtj83964
On a switch running Protocol-Independent Multicast (PIM) and Source Specific Multicast (SSM),
multicast traffic might not be sent to the correct port after the switch reloads.
The workaround is to enter the clear ip route privileged EXEC command or reconfigure PIM and
SSM after a reload.
•CSCtk00846
If Auto Smartports macros are configured, access points with the AIR-CAP prefix are not detected.
The workaround is to manually configure the access point port.
•CSCtl51859
Neighbor discovery fails for IPv6 hosts connected to the switch when the IPv6 MLD snooping
feature is enabled globally on the switch.
The workaround is to disable IPv6 MLD snooping on the switch.
•CSCtl60151
The switch sometimes reloads after a CPU overload, regardless of the process that is overloading
the CPU.
This problem has been corrected.
•CSCtn11259
If a switch stack is configured with the stack-mac persistent timer value interface configuration
command, the switch virtual interface (SVI) should remain in shutdown mode during a switchover.
In this case, the SVI is in up mode.
The workaround is to specify the timer value to be long enough so that the stack's MAC address is
not changed.
•CSCto67688
If a member switch does not have an access control list (ACL) and is running an Enforcement Policy
Module (EPM) session, the client on that interface is re-authorized each time that the switch reloads.
The workaround is to configure an ACL on the interface.
•CSCtr79386
The switch fails when DHCP snooping is configured and packet data traffic is excessive. The traffic
exhausts the I/O memory and triggers the switch to crash.
There is no workaround.

19
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
Caveats Resolved in Cisco IOS Release 12.2(55)SE3
•CSCtg71149
When ports in an EtherChannel are linking up, the message EC-5-CANNOT_BUNDLE2 might appear.
This condition is often self-correcting, indicated by the appearance of EC-5-COMPATIBLE message
following the first message. On occasion, the issue does not self-correct, and the ports may remain
unbundled.
The workaround is to reload the switch or to restore the EtherChannel bundle by shutting down and
then enabling the member ports and the EtherChannel in this order:
– Enter the shutdown interface configuration command on each member port.
– Enter the shutdown command on the port-channel interface.
– Enter the no shutdown command on each member port.
– Enter the no shutdown command on the port-channel interface.
There is no workaround.
•CSCth24267
The switch stack log displays an error message about the redundant power supply (RPS). No RPS
is actually present and the switch is instead powered by the blade chassis.
There is no workaround.
•CSCth57488
The switch LEDs freeze or behave erratically. The problem occurs with bootloader version
12.2(44)SE5.
There is no workaround.
•CSCtl05835
For changes in temperature, the command line interface shows the updated temperature but the
Simple Network Management Protocol (SNMP) always shows the temperature as “1 degree
Celsius”.
There is no workaround.
•CSCtn18139
When the show spanning-tree vlan VLAN interface fastethernet 0 command is entered, the switch
restarts.
The FastEthernet 0 interface is a management interface that does not run Spanning Tree Protocol
(STP). Do not run show spanning-tree commands for management interfaces.
•CSCtn57224
The switch sends out temperature traps when the temperature is between 58 and 60 degrees Celsius.
There is no workaround.
•CSCtn57245
The show env stack command displays RPS status as “RPS NOT PRESENT”. This could confuse
the customer because Blade switches do not support RPS.
The workaround is to use the remote command all show env all command to display environment
information.

20
Release Notes for the Cisco Catalyst Blade Switch 3020 for HP, Cisco IOS Release 12.2(55)SE and Later
OL-22861-04
Resolved Caveats
•CSCto55124
When a member switch port security is used with port-based dot1x authentication and the switch
MAC address is sticky, a connected device authenticates itself. Its MAC address is added as sticky
in the switch configuration and in the port security tables of the stack switches. When the switch is
shut down, the device MAC address is removed from the master switch, but it is retained in the
member switch security tables. When the interface is re-enabled, the device MAC address is restored
to the master switch configuration.
The workaround is to use port security without dot1x authentication.
Caveats Resolved in Cisco IOS Release 12.2(55)SE2 and Earlier
•CSCsu31853
The buffer space of a switch running TCP applications is full while the TCP sessions are in the
TIME_WAIT state. Buffer space becomes available after the TCP session the closed.
There is no workaround.
•CSCsx29696
On switches running Cisco IOS Release 12.2(35)SE or later, connectivity issues might occur with
these messages:
%SUPQ-4-CPUHB_RECV_STARVE: Still seeing receive queue stuck after throttling
There is no workaround.
•CSCsz18634
On a switch running Cisco IOS Release 12.2(46)SE, the output of the show interfaces privileged
EXEC command shows 0 packets for port channel input and output rates.
The workaround is to reload the switch by entering the reload privileged EXEC command.
•CSCtb58779
When a switch is low on memory (less than 256 MB), it can reload and display a
SYS-2-WATCHDOG error.
There is no workaround. Enter the show memory debug leak privileged EXEC command to check
for signs of a memory leak and address these symptoms.
•CSCtc02635
On switches running Cisco IOS Release 12.2(50)SE3 running MAC authentication bypass with
multidomain authentication (MDA), IP phones connected to a port might not be able to regain
network connectivity in the VOICE domain if the session times out and all RADIUS servers are
unreachable.
There is no workaround.