Dell™ PowerConnect™ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA/8024/8024F/ M6220/M6348/M8024/M8024-k PowerConnect 4.1.0.6 Firmware Release Notes Date: March 2011 System Firmware Version 4.1.0.6 Information in this document is subject to change without notice. © 2003 – 2011 Dell Inc. All rights reserved. Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Table of Contents Introduction 1 Global Support 1 Firmware Specifications 1 Hardware Supported 2 Support Matrix 3 Added Functionality in this Release 4 Changed Functionality in this Release 10 Issues Resolved 16 CLI Reference Guide Updates 20 User’s Configuration Guide Updates 20 Known Issues 21 Known Restrictions and Limitations 23 Layer 2 23 Layer 3 24 Management 25 End of Release Notes 25 ii System Firmware Version 4.1.0.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Introduction This document provides specific information for the Dell PowerConnect 7024/7048/7024P/7048P/7024F/7048R/7048RRA/8024/8024F/M6220/M6348/M8024/M8024-k switches firmware version 4.1.0.6. It is recommended that this release note be thoroughly reviewed prior to installing or upgrading of this product.
NOTE: By default, switches in a stack configuration will upgrade or downgrade stack members with the firmware version installed on the master switch. Supported Firmware Functionality For more details regarding the functionality listed below, please refer to the Dell PowerConnect Series CLI Reference Guide and the Dell PowerConnect Series Configuration Guide. Firmware Downgrade Downgrading from 4.1.0.6 to a previous release is supported on the PowerConnect series switches.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Support Matrix Since not all functionality is supported on all switches, the following matrix identifies the major differences among the PowerConnect switch models. A check mark indicates support for the feature. All other features listed in the release notes are supported on all switches.
Added Functionality in this Release This section contains a brief introduction to features added in this release that are new for at least one switch listed in the Hardware Supported section above. IPv4-Only Mode Optimization PowerConnect switches allocate the maximum sizes for routing tables (and others, as applicable) for both IPv4 and IPv6. Switch Performance Optimization allows the operator to optimize the allocation of switch silicon tables for either IPv4 only or mixed IPv4/IPv6 operation.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Link Local Protocol Filtering Link Local Protocol Filtering blocks Cisco link local protocols from being flooded in the network. By default, PowerConnect switches process and respond to Cisco CDP packets. However, in networks where this capability is not desirable or other Cisco proprietary packets are flooded over the network, the administrator can disable flooding of Cisco link local protocols.
Tail drop and WRED parameters are specified individually for each supported drop precedence level. In addition, the following are specified on a per-interface basis: queue management type: tail drop vs. WRED (only if per-queue configuration is not supported) WRED decay exponent Switch administrators should remember to configure ingress ports as trusted or un-trusted. By default ingress ports trust dot1p values.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Management IP Address Conflict Detection Management IP address conflict detection actively looks for duplicate IP address assignment and logs conflicts. Only the last identified IPv4 address conflict is retained for display by a show command. Administrators may examine the in- memory logs or the output from a SYSLOG server to identify the historical IP address conflicts.
Switch Auditing Switch auditing enhances network security by logging sensitive administrative actions.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Internal Authentication Server The PowerConnect Series switches support 802.1x authentication of network users from an internal authentication database. IAS users are given access to network resources. IAS users are not given management access to the switch. IAS users, once authenticated, can only pass frames across the switch.
Changed Functionality in this Release This section contains commentary on significant differences from previous releases of firmware on PowerConnect switches, e.g. the PCM6348/PCM6220/PCM8024/PC8024/PC8024F switches. Dell PowerConnect series switches closely conform to networking industry standard operational capabilities and administrative interfaces.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes LACP Ports Inactive Until Attached Ports in a LAG configured to use LACP (dynamic LAG) remain inactive (discard received traffic) until they become attached to the LAG. LACP ports that are attached to a LAG will enter the discarding state if they become detached from the LAG for any reason. Port level configuration for a port that is configured in a dynamic LAG is disregarded.
User Configurable CLI Banners Administrators may configure banners for the following: MOTD, login, and exec. The banners may consist of multiple lines of text. Each new line will consume an extra two characters (CR/LF) that count against the maximum length banner that can be configured. Captive Portal Captive portal has been extended to support user logout and localization. 802.1Q The following changes have been made to the operation of VLANs.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes This capability adds support for responding to pings by the VRRP master, but does not allow the VRRP Master to accept other types of packets. A configuration option controls whether the router responds to Echo Requests sent to a VRRP IP address. When enabled, the VRRP master responds to both fragmented and un-fragmented ICMP Echo Request packets.
LLDP Enhancements Multiple Neighbor Support: Multiple neighbors are supported on a single LLDP interface. The number of recognized neighbors is limited to two per port or 834 LLDP neighbors on a fully stacked set of switches. There is no restriction on the number of neighbors connected to an LLDP port. If more LLDP neighbors are present than are supported, then only the last two neighbors that communicate with the local LLDP interface are recognized and any additional neighbors are ignored.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Dynamic VLAN Assignment Dynamic VLAN assignment is intended to support the connection of hosts to a router with enhanced levels of service, typically either security or QoS. This release supports dynamic VLAN assignment as assigned from the RADIUS server as part of port authentication.
Issues Resolved The following issues from previous releases have been corrected in this release. The issues listed here may have been discovered on any of the switches listed on the title page. Summary User Impact Workaround SSH crash - memPartAlloc: block too big Reduced switch functionality. Memory allocation issue is corrected and checked for memory leaks PC M8024 switch reset out-of-band address to none when switchports were changed Inability to access switch via OOB port.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Summary User Impact Workaround SysUpTime is not being shown correctly during an SNMP walk (Poll interval 1sec) Operator confusion regarding switch operation. The correct variable is used to write SysUpTime Log messages need to be corrected on ip dhcp snooping rate limit scenario. Operator confusion regarding switch configuration. Inability to diagnose network issues.
Summary User Impact Workaround Max number of OSPF neighbors not supported User confusion over switch operations. The maximum number of neighbors is supported. Cable fault distance not getting displayed in WEB in case of cable with one or more pairs cut or short. User confusion over switch operations. The fault distance is displayed in the web page. Ports representation need to be changed in debug messages User confusion over switch operations. Inability to diagnose network issues.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Summary User Impact Workaround CDP (ISDP) is active on port-channels instead of the member Ethernet interfaces. For dynamic LAGS, the ISDP information is not exchanged on the interface until the port-channel becomes active. User confusion over switch operations. Inability to interoperate with other switches. CDP is active on the member ports for dynamic LAGs when the LAG is active.
CLI Reference Guide Updates The Dell PowerConnect CLI Reference Guide is completely new. Users are referred to the Dell PowerConnect Configuration Migration White Paper for information on how to migrate configurations from previous releases of Dell PowerConnect firmware to the 4.0.0.6 Dell PowerConnect firmware.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Known Issues Summary DUT delivers more power than the PD requested via LLDP in high power mode. User Impact Workaround DUT may draw more power than negotiated at short cable lengths. PD may draw more power than negotiated, but power loss due to cable impedance is compensated for so that devices with average or longer cable length will receive adequate power. None – system assumes 5.
Summary User Impact Workaround Non-configuration file getting loaded to startup-config through HTTP. Switch does not utilize invalid configuration file information. Earlier versions of startup-config are not available for fallback when overwritten with an invalid startup-config. In this case, an invalid configuration file was downloaded (on purpose) via the web.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Known Restrictions and Limitations Layer 2 802.1x Authentication Description User Impact Windows Vista® Authentication The Windows Vista® client could fail to authenticate properly when the option to cache user credentials is selected. Workaround: 1. In Control Panel Network Connections, right-click on the desired Local Area Connection and select Properties. 2.
Layer 3 IPv6 MTU Description User Impact IPv6 Fragmentation Support The switch is not fragmenting the datagram and forwards even when the IP MTU of the forwarding interface is set to a lower value (than the datagram size). IPv6 frames are not allowed to be fragmented. IPv6 frames forwarded in silicon can be up to the lesser of 9216 octets or the link MTU. These frames are forwarded by the switching silicon with no effect. If a frame exceeds the link MTU for a port, it is discarded silently.
PowerConnect M6220/M6348/8024/8024F/M8024/M8024-k/ 7024/7048/7024P/7048P/7024F/7048R/7048R-RA Release Notes Management CLI Description User Impact radius-server mode commands do not have a "no" form. None of the commands in radius-server mode support a "no" form except for the msgauth command. To reset values to the default, delete the server entry and add it back.
