Dell POWERCONNECT 5524 How to use

Dell™ PowerConnect™ 5524/5548/5524P/5548P
PowerConnect 5524/5548/5524P/5548P
Release Notes
Date: April 2014
System Firmware Version 4.1.0.16
Information in this document is subject to change without notice.
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System Firmware Version 4.1.0.16 Subject to Change Without Notice i
Table of Contents
Introduction 1
GLOBAL SUPPORT 1
Firmware Specifications 1
Functionality Changes 2
Issues Resolved 3
40G Molex break-out cable: E357317-S (uL) TYPE CL2 FT4 30 AWG, is not supported and cause port flapping...3
Some interfaces of a LAG across the stack do not update the LAG counters...........................................................3
DHCP Server Fatal Error crash.................................................................................................................................3
Device reboots with Fatal Error with message “SW3C_pcl_fft_entry_chk: illegal function input – vpt” .....................3
LAG with XG type present speed of 1,000 Mbps in GUI...........................................................................................3
Device does not present itself in the SSH server as support SSH-2.0-OpenSSH_5.9p1.RL ....................................3
Copy image from stack unit to master causes a system crash..................................................................................3
Show LLDP neighbors per interface cause crash .....................................................................................................3
Known Restrictions and Limitations 4
When 2 PoE capable switches are connected to each other, one of the 2 switches may consume power form the
neighboring switch and not from its internal power supply........................................................................................4
WEB GUI Page “Utilization Summary”, "Interface Utilization field" sometimes displays “-“.......................................4
USB key might hang after several quick inserts and removals requiring a reboot.....................................................4
Cisco Phones 7960 interoperability problem.............................................................Error! Bookmark not defined.
Documentation Updates 5
Adding clarification to Voice VLAN enable command................................................................................................5
Adding clarification to Voice VLAN Port Setting page...............................................................................................5
Clarification about interface switchport customer mode (QinQ) ................................................................................5
Issues Resolved in Previous Versions 5
Stacking unit does not always rejoin stack after master failover ...............................................................................5
HTTP login fail if password is longer than 20 characters...........................................................................................5
Wrong value used for chassis Service Tag...............................................................................................................5
STP frame size - STP frames had extra padding (frame size 68 instead of 64)........................................................6
When refreshing the Switching->VLAN->LAG interface->Edit page the device presents the “Port Interface” page
instead.......................................................................................................................................................................6
Deletion of all Static entries in DHCP Server page causes device to crash.............................................................6
When trying to add via Web GUI MAC ACE with broadcast MAC address as destination address, configuration is
not accepted and an error message is displayed “value is an illegal unicast MAC address”.....................................6
Summer time clock with SNTP..................................................................................................................................6
Show Tech Support (enhancement request).............................................................................................................6
PC5500 DVA randomly fails and assigns clients to the guest VLAN.........................................................................6
VLAN trunk mode Native VLAN with IPv6.................................................................................................................6
GUI problem in VLAN pages.....................................................................................................................................7
Voice VLAN and LAGs..............................................................................................................................................7
vulnerabilities and DoS attacks reported on SSH service .........................................................................................7

System Firmware Version 4.1.0.16 Subject to Change Without Notice ii
PowerConnect 55xxP having problem providing power when using Shortel IP230G phones (PSE/PTR issue -
213880).....................................................................................................................................................................7
PC55xx - speed not listed for 10Gb ports in Web GUI unless page was refreshed. .................................................7
PC55XX MIB OIDs for optical transceivers conversion from bBm to mWatt is mistaken..........................................7
Routed traffic in the device is using the port MAC as the SMAC instead of the device MAC....................................7
Web GUI displays tagged VLANs as Inactive configuration......................................................................................7
PCT55xx PS (main Power Supply) and RPS (Redundant PS) LED status is not reflected accurately in the Zoom
view of the Web GUI .................................................................................................................................................8
VCT results on short cables were shown as “Bad Value”..........................................................................................8
Guest-VLAN timeout command is not working..........................................................................................................8
Problem with IPv4 and IPv6 ACL’s combination .......................................................................................................8
Port flapping when connecting devices to each other with EEE enabled..................................................................8
Prevent creating duplicate ACEs per ACL.................................................................................................................8
The command "boot host dhcp" needs to stay in the configuration if without autosave option..................................8
Link issues between PC5548 and e6320 (Dell) laptop (EEE interoperability on Intel NIC)......................................9
PC55xx Port-channel inconsistent configuration in general mode ............................................................................9
PC55xx - FATAL ERROR and crash when changing port mode...............................................................................9
PC55xx v4.0.1.0 LAG issue using 10Gb interfaces...................................................................................................9
PC55xx Unable to reach Storm Control page via GUI (Japanese Internet Explorer)................................................9
55xx - Cannot modify port description in GUI on active fiber-optic interface.............................................................9
PC55xx - show clock detail output different to user manual....................................................................................10
Incorrect OID returned on SNMPGetNext 55xx.......................................................................................................10
PC55xx - SNMP ifType value of 6 for port-channel interfaces ...............................................................................10
GUI shows a fan led in red which does not match the physical status of the front led............................................10
PC55xx Connectivity issues with fixed port setting and stacking. ...........................................................................10
PC55xx switch crashed on snmpgetnext 1.3.6.1.4.1.89.59.2.3.1.9.2.2...................................................................10
PC55xx - unable to set speed 1000 via web GUI on ten gigabit interfaces.............................................................11
PC55xxP – Power to PDs lost every once in a while...............................................................................................11
Nessus vulnerability alert ........................................................................................................................................11
Fan level improvements..........................................................................................................................................11
PC 5524 SNMP walk improvements .......................................................................................................................11
EEE advertisement when EEE is disabled..............................................................................................................12
Devices stop to learn MAC addresses after 49.7 days............................................................................................12
Slave unit up time wraps after 49.7 days.................................................................................................................12
Fatal Error Loop - PC55xx stacking issues .............................................................................................................12
802.1X when spanning tree is enabled ...................................................................................................................12
POE LED might stay ON after Overload .................................................................................................................12
End of Release Notes 12

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 1
Introduction
This document provides specific information for the Dell PowerConnect 5524/5548/5524P/5548P Switch systems,
firmware version 4.1.0.16 (which is a maintenance release).
It is recommended that this release note be thoroughly reviewed prior to installing or upgrading this product.
GLOBAL SUPPORT
For information regarding the latest available firmware, recent release revisions or if requiring additional
assistance, please visit http://support.dell.com Support Web Site.
Firmware Specifications
Firmware Version Details
Boot PROM Name
Version No.
Release Date
powerconnect_55xx_boot-10014.rfb
1.0.0.14
Apr, 2012
Firmware Image Name
Version No.
Release Date
powerconnect_55xx-41016.ros 4.1.0.16 Apr, 2014
The firmware image version should be 4.1.0.16 on the PowerConnect 5500 Series. The boot prom image should be
1.0.0.14. Refer to the PowerConnect 5500 Series User‘s Guide for instructions on loading the boot PROM software
and updating the firmware image.
Version Numbering Convention
Version number
Description
55XX
4
1
0
16
Four part version number

Denotes the build number.

Denotes an ad hoc release of the product software.

Denotes a scheduled maintenance release of the product software.

Denotes a major version number.
Supported Firmware Functionality
For more details regarding the functionalities listed, please refer to the PowerConnect 5500 Series User‘s Guide.

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 2
Functionality Changes
From Version 4.1.0.15 and on – by default all show commands relevant to interfaces status/configuration will
display only present interfaces. Command will not display interfaces that are not currently present on the stack.
Note: display time may be a bit longer than in previous versions.
To display all interfaces – present and non-present, add the ‘detailed’ parameter to the show command.
From Version 4.1.0.15 and on – syslog messages will also include: device IP address; time zone and the 1/10 of
seconds value to message timestamp.
From Version 4.1.0.10 and on – OpenSSH version upgraded to 5.9; SSL version upgraded to 0.9.8r
From version 4.1.0.8 and on – Fast Link failover feature was improved. In case of a topology change from ring to
chain or chain to ring within the stack the traffic interruption is now as low as 9ms.
From version 4.1.0.5 support for PC55xx switches with a new PHY revision (A1) was added. PC55xx switches with
new PHY revision are identified as HW revision 03. The HW revision can be displayed by running the command
“show version” in the terminal window (console, Telnet or SSH). It is recommended to run firmware version 4.1.0.5
or later on PC55xx switches with new 03 HW revisions. PC55xx with new PHY revision can also run previous
firmware versions, but will be subject to certain limitations related to VCT, EEE and Green Ethernet functionality,
as detailed below:
Previous Firmware
Version
Limitation on PC55xx switches with new PHY revision
Firmware version 4.0.1.x
VCT may not provide accurate cable length. As a result Green Ethernet Feature may not
function as expected.
EEE is supported
Firmware version 4.1.0.x
VCT may not provide accurate cable length. As a result Green Ethernet Feature may not
function as expected.
EEE is fully supported

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 3
Issues Resolved
The following issues have been resolved in current firmware release (Version 4.1.0.16)
Description
User Impact
Resolution
Added support for 40G Molex
break-out cable
When using the mentioned cable, ports is
flapping and traffic cannot be forwarded
Issue resolved by adding
support
Some interfaces of a LAG across
the stack do not update the LAG
counters
Actual traffic is being forwarded, but counters
of some interfaces of LAG across the stack are
not updated.
Issue resolved
DHCP Server Fatal Error crash
When device function as DHCP server and
configuring the address pool (moving the
dynamic range, all connected hosts are
provided with static leases). After a while
device crash.
Issue resolved
Device reboots with Fatal Error
with message
“SW3C_pcl_fft_entry_chk: illegal
function input – vpt”
In some cases sending traffic denied by the
ACEs may cause reboot with the following
message: SW3C_pcl_fft_entry_chk: illegal
function input - vpt id 8
Issue resolved
LAG with XG type present speed
of 1,000 Mbps in GUI
User impact is cosmetic.
CLI output is presented as expected and traffic
across the stack runs as expected.
Issue resolved
Device does not present itself in
the SSH server as support SSH-
2.0-OpenSSH_5.9p1.RL
Device support SSH-2.0-OpenSSH_5.9p1.RL
but advertise itself as support old version:
SSH-2.0-OpenSSH_3.4p1.RL
Issue resolved
Copy image from stack unit to
master causes a system crash
When attempting to copy from a stack member
to the backup image on the master switch, the
stack will crash with a fatal error
Switch# copy unit://2/image image
Issue resolved - option is
not supported and has been
removed from CLI
command
Show LLDP neighbors per
interface cause crash
When device receive LLDP packet with vendor
specific VLAN ID 0, it cause the device to
crash when presenting the show LLDP
neighbors per interface
Issue resolved

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 4
Known Restrictions and Limitations
Summary
User Impact
Workaround
When 2 PoE capable
switches are connected to
each other, one of the 2
switches may consume
power form the neighboring
switch and not from its
internal power supply.
“Receiving” switch is not able to provide
PoE power to PD devices attached to it.
Disable PoE on the ports which connect
2 PoE enabled devices.
WEB GUI Page “Utilization
Summary”, "Interface
Utilization field" sometimes
displays “-“
When sending wire-speed traffic and the
refresh rate is longer than 15 seconds,
the WEB GUI displays “-“ instead of a
real value.
When sending wire-speed traffic, use
refresh rate of 15 seconds.
USB key might hang after
several quick inserts and
removals requiring a reboot.
After the USB key is inserted and
removed several times very quickly
(within a second) along with the "dir usb:"
command, the key stops responding.
The USB key becomes operational after
reboot.
Wait a few seconds between insertion
and removal of the USB key.
interoperability problem with
Cisco Phones 7960/ Inter-Tel
8560 IP Phones, Ruckus
7372 AP
Some of IP Phones create a short on
Ethernet wires when connected to
PC55xx POE ports. Connecting such
phone to PC55xxP might cause a
leakage of power to other POE devices
connected on the same switch. This may
cause POE issues on neighboring ports.
Two options are available to work
around this issue:
•Use a RJ45-Cat5 splitter cable
(2-to-1 RJ45 Splitter Cable
Adapter-F/M)
•Use a two pair Ethernet cable
(e.g. Cat3)
After device reboot, STP
Portfast shows status "No"
when interface is down
When port is in portfast status and in
down state, after reboot the port is
presented in show spanning-tree as not
supporting the portfast.
Once the interface moves to up state,
portfast functions as expected
When the interface is down, refer to
the running-configuration output
instead the show spanning –tree.

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 5
Documentation Updates
This document lists the changes from the PowerConnect 5524/5548/5524P/5548P Systems CLI and User’s Guide.
The modifications are due to instances discovered in various user environments.
Summary Description Relevant Documents
Adding clarification to Voice
VLAN enable command
Adding clarification to user guideline and CLI
example for command “voice vlan enable” –
Voice VLAN cannot be enabled on interface, if
interface is static member of the voice VLAN.
CLI guide
Adding clarification to Voice
VLAN Port Setting page
Adding clarification to Voice VLAN Port Setting
section (page 503) - – Voice VLAN cannot be
enabled on interface, if interface is static
member of the voice VLAN.
User Guide
Clarification about interface
switchport customer mode (QinQ)
Clarifying in “interface switchport mode”
command that customer mode setting is part
of QinQ tagging. CLI guide
Issues Resolved in Previous Versions
The following is a list of issues resolved between 4.1.0.12 and 4.1.0.15 in firmware release
Description
User Impact
Resolution
Stacking unit does not always
rejoin stack after master failover Traffic does not flow properly through some
units of the stack Issue resolved
HTTP login fail if password is
longer than 20 characters User is denied access management via http, in
such a case Issue resolved
The following is a list of issues resolved between 4.1.0.10 and 4.1.0.12 firmware release.
Description User Impact Resolution
Wrong value used for chassis
Service Tag
MIB – switch reports switch Service Tag as
Chassis Service tag. However – device is not
designed to be included in a chassis
Chassis Service Tag is now
set to NULL.

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 6
STP frame size - STP frames had
extra padding (frame size 68 instead
of 64)
STP frames with extra padding are valid from
standard point of view. However – some
systems reported errors when receiving such
frames.
Extra padding was removed
When refreshing the Switching-
>VLAN->LAG interface->Edit page
the device presents the “Port
Interface” page instead
GUI displays wrong page Issue resolved
Deletion of all Static entries in
DHCP Server page causes device to
crash System reboots Issue resolved
When trying to add via Web GUI
MAC ACE with broadcast MAC
address as destination address,
configuration is not accepted and
an error message is displayed
“value is an illegal unicast MAC
address”
user cannot configure via the web GUI a MAC
ACE with a broadcast as destination MAC
address Issue resolved
The following is a list of issues resolved between 4.1.0.08 and 4.1.0.10 firmware release.
Description
User Impact
Resolution
Summer time clock with SNTP Sometimes when working with SNTP server, the device clock adds 2 hours instead of 1
hour in Summer Time Issue resolved
Show Tech Support (enhancement
request) Request to add more info in “show tech- support” command
The following command
outputs was added to show
Tech-supp output:
"show interface counters
errors"
"show system unit X "
"show power inline"
PC5500 DVA randomly fails and
assigns clients to the guest VLAN Traffic from Dot1x users is not assigned to the correct VLAN Issue resolved
VLAN trunk mode Native VLAN with
IPv6
Device crashes when defining an IPv6 enabled
VLAN as a native VLAN on a port in trunk
mode Issue resolved

PowerConnect 5500 Series Release Notes
System Firmware Version 4.1.0.16 Subject to Change Without Notice Page 7
GUI problem in VLAN pages "apply" and "cancel" button disappear from VLAN
port setting edit page if interface includes
command to remove certain VLANs Issue resolved
Voice VLAN and LAGs Device crashes when Adding Voice VLAN
enabled ports to a LAG Issue resolved
vulnerabilities and DoS attacks
reported on SSH service Reports of SSH vulnerabilities on device Upgrade to OpenSSH
version 5.9
The following is a list of issues resolved between 4.1.0.05 and 4.1.0.08 firmware release.
Description
User Impact
Resolution
PowerConnect 55xxP having
problem providing power when using
Shortel IP230G phones (PSE/PTR
issue - 213880)
The Shortel IP230G phones don’t work.
Issue was related to phone
requesting/consuming power beyond the limit
of the class it was advertising
Additional global option was
added to allow switch to
provide power up to the
max limit of 15.4W
regardless of device POE
class.
PC55xx - speed not listed for 10Gb
ports in Web GUI unless page was
refreshed.
In Web GUI the current speed of the 10Gb
ports is not presented Issue resolved
PC55XX MIB OIDs for optical
transceivers conversion from bBm to
mWatt is mistaken
Wrong mWatt values are displayed in CLI and
Web GUI Issue resolved
Routed traffic in the device is using
the port MAC as the SMAC instead
of the device MAC
In some rare cases this behavior would affect
the ability of end stations to use the switch
interface as a default gateway.
Issue resolved. Device
base MAC is always used
as SMAC when routing
traffic
Web GUI displays tagged VLANs as
Inactive configuration Wrong configuration is being shown to the user. CLI displays accurate information. Issue resolved