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Cisco UCS™ Manager, Release 4.0 provides unified, embedded management of all software and hardware components of the CiscoUnified Computing System™ (Cisco UCS) across multiple chassis, Cisco UCS servers, and thousands of virtual machines. Cisco UCS Manager manages Cisco UCS as a single entity through an intuitive GUI, a command-line interface (CLI), or an XML API for comprehensiveaccess to all Cisco UCS Manager functions. For more information on Cisco UCS Manager, see.This document contains information on new features, resolved caveats, open caveats, and workarounds for Cisco UCS Manager,Release 4.0. This document also includes the following:.Current information that became available after the technical documentation was published.Related firmware and BIOSes on blade and rack servers and other Cisco Unified Computing System (UCS) components associatedwith the releaseUpgrading directly to Cisco UCS Manager 4.0(x) is supported from Release 2.2(8), and 3.1(3) and later releases. For UCS Mini, upgrading directly to Cisco UCS Manager Release 4.0(x) is supported from Release 3.1(3) and later releases. See Cisco UCS Manager Firmware Management Guide, Release 4.0 for details.Revision History. Here are the top reasons to move to Cisco UCS Manager Release 4.0:.Support for UCS 6454 Fabric Interconnects.Support for C4200 chassis and Cisco UCS C125 M5 Servers.Support for VIC 1400 series adapter cards on UCS M5 servers.Support for Cisco UCS C480 M5 ML Servers.Support for the Second Generation Intel ® Xeon ® Scalable processor refresh and Intel ® Optane ™ Data Center persistent memory modules on UCS Intel-based M5 servers.Support for a new SIOC with S3260 storage servers.Support for Hyperflex 3.5 and later releases.Support for new peripheralsNew Features in Release 4.0.

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Jan 17, 2017 Download Intel Chipset Software Installation Utility 10.1.1.42. OS support: Windows (all). Do not download this utility if your device manufacturer is recommending it.

Download Intel Driver/Support Assistant 3.0.0.9 (Motherboard) The Intel Driver & Support Assistant enables you to scan computing devices for the latest drivers available from Intel.

Cisco UCS C480 M5 ML ServerThe Cisco UCS C480 M5 ML Rack Server is a purpose-built server for Deep Learning. It is storage- and I/O-optimized for training models. The Cisco UCS C480 M5 ML Server delivers outstanding levels of storage expandability and performance options for standalone or Cisco UCS-managed environmentsin a 4RU form factor. You cannot install VIC adapters from different series on the same server. For example, you cannot install UCS VIC 1300 Seriesadapters and UCS VIC 1400 Series adapters on the same server.The following tables illustrate the supported VIC 1400 Series adapter/server combinations for Cisco UCS Manager Release 4.0(2): Table 1. VIC 1400 Series Adapter Support for M5 B-Series ServersFIIOM1400 Series VIC AdaptersVIC 1440VIC 1440 + Port ExpanderVIC 1480VIC 1440 + VIC 1480UCSB-MLOM-40G-04UCSB-MLOM-40G-04 + UCSB-MLOM-PT-01UCSB-VIC-M84-4PUCSB-MLOM-40G-04 + UCSB-VIC-M84-4P6200 Series2204/2208B480 M5, B200 M5NAB480 M5B480 M5, B200 M56300 Series2304B480 M5, B200 M5B480 M5, B200 M5B480 M5B480 M5, B200 MB480 M5, B200 M5NAB480 M5B480 M5, B200 M5645B480 M5, B200 M5NAB480 M5B480 M5, B200 M56324 (UCS MiniNAB480 M5, B200 M5NAB480 M5B480 M5, B200 MNANANANATable 2. Fourth Generation Fabric InterconnectThe Cisco UCS 6454 Fabric Interconnect is a core part of the Cisco Unified Computing System, providing both network connectivity and management capabilities forthe system.

The Cisco UCS 6454 offers line-rate, low-latency, lossless 10/25/40/100 Gigabit Ethernet, Fibre Channel over Ethernet(FCoE), and Fibre Channel functions.The Cisco UCS 6454 54-Port Fabric Interconnect is a one-rack-unit (1RU) 10/25/40/100 Gigabit Ethernet, FCoE and Fibre Channelswitch offering up to 3.82 Tbps throughput and up to 54 ports. The switch has 40 10/25-Gbps fixed Ethernet, 8 10/25-Gbps Ethernetor 8/16/32G Fibre Channel ports and 6 40/100-Gbps Ethernet uplink ports. All Ethernet ports are capable of supporting FCoE.Cisco UCS C125 M5 ServerCisco UCS Manager 4.0(1) supports Cisco UCS C125 M5 Servers on UCS 6300 Series and UCS 6454 Fabric Interconnects. The C125 M5 server is Cisco’s first server based on AMD EPYC™ processors. Cisco UCS C125 M5 Servers are housed in the Cisco UCS C4200 Series rack server chassis.

Each Cisco UCS C4200 Series rack server chassis supports twoto four Cisco UCS C125 M5 Server nodes. The Cisco UCS C125 M5 Server supports the following peripherals:.Dual Port 10Gbase-T and 10G/25G SFP28 OCP cards.Cisco 12G 9460-8i PCIe 12G SAS RAID controller.32 GB, 64 GB, and 128 GB SD cards.32GB Micro-SD cardNote.

This is not managed through Cisco UCS Manager.Mini Storage Carriers for SD and M.2 SATA.On-board AHCI controllersNew Generation SIOC for Cisco UCS S3260 Storage ServersCisco UCS S3260 Storage Server system supports a new server SIOC UCS-S3260-PCISIOC with S3260 M5 servers. This SIOC has PCIe slots to replace the networkadapters. These slots support both Cisco VIC and third-party adapters. Additionally, the new SIOC has two NVME slots.

You cannot install VIC adapters from different series on the same server. For example, you cannot install UCS VIC 1300 Seriesadapters and UCS VIC 1400 Series adapters on the same server.The following tables illustrate the supported VIC 1400 Series adapter/server combinations for Cisco UCS Manager Release 4.0(1): Table 3. VIC 1400 Series Adapter Support for M5 B-Series ServersFIIOM1400 Series VIC AdaptersVIC 1440VIC 1440 + Port ExpanderVIC 1480VIC 1440 + VIC 1480UCSB-MLOM-40G-04UCSB-MLOM-40G-04 + UCSB-MLOM-PT-01UCSB-VIC-M84-4PUCSB-MLOM-40G-04 + UCSB-VIC-M84-4P6200 Series2204/2208B480 M5, B200 M5NAB480 M5B480 M5, B200 M56300 Series2304B480 M5, B200 M5B480 M5, B200 M5B480 M5B480 M5, B200 MB480 M5, B200 M5NAB480 M5B480 M5, B200 M5645B480 M5, B200 M5NAB480 M5B480 M5, B200 M5Table 4. For more details regarding server and adapter combinations, refer the Server Spec Sheets:.Peripherals.Support for the HX-PCIE-OFFLOAD-1 co-processor card with C240Hx M5 servers.Support for the High Voltage DC 1200 Watt Power Supply N9K-PUV-1200W on UCS 6332-16UP fabric interconnects.Intel Optane NVMe Med.

Performance Drives for M5 servers including C220, C240, C480, B200, B480, and S3260 and Hyperflex equivalents.Support for the LSI 9400-8e external SAS HBA on UCS C220, C240, C480 M5 servers.New Software Features in Release 4.0(4a). Software Enablement for New Hardware (Listed in the New Hardware section) Intel ® Optane ™ Data Center Persistent Memory ModulesCisco UCS Manager Release 4.0(4) introduces support for the Intel ® Optane ™ Data Center persistent memory modules on the UCS M5 servers that are based on the Second Generation Intel ® Xeon ® Scalable processors. Intel ® Optane ™ DC persistent memory modules can be used only with the Second Generation Intel ® Xeon ® Scalable processors.This release provides the ability to configure and manage Intel ® Optane ™ DC persistent memory modules through Cisco UCS Manager.

Persistent memory modules are non-volatile memory modules that bring together the low latency of memory and the persistenceof storage. Data stored in persistent memory modules can be accessed quickly compared to other storage devices, and is retainedacross power cycles.Cisco UCS 6454 Fabric Interconnect Enhancements.Multicast MAC-Filtering—This enhancement allows hosts to register for the type of traffic to be received, and facilitatestraffic forwarding to vNICs based on this criteria.The number of unified ports have been increased from 8 to 16.

Beginning with Cisco UCS Manager Release 4.0(4), the port numbering for Cisco UCS 6454 Fabric Interconnects is:Table 5. Port Numbering for UCS 6454 Fabric InterconnectsPortsDescriptionPortsDescription1-16Unified Ports can operate as 10/25 Gbps Ethernet or 8/16/32 Gbps Fibre Channel. FC ports are converted in groups of 4 portsby the first 4 ports (port 1 to 4) or the first 8 ports (port 1 to 8).17-44Each port can operate as either a 10 Gbps or 25 Gbps SFP28 port.45-48Each port can operate as a 1 Gbps, 10 Gbps, or 25 Gbps Ethernet or FCoE port.49-54Each uplink port can operate as either a 40 Gbps or 100 Gbps Ethernet or FCoE port. When using a breakout cable, each of theseports can operate as 4 x 10 Gbps or 4 x 25 Gbps Ethernet or FCoE ports.Ports 49-54 can be used only to connect to Ethernet or FCoE uplink ports, and not to UCS server ports.Support for FCoE uplink ports in Fibre Channel switch mode on the Cisco UCS 6454 Fabric Interconnect.Maximum of 8 FCoE SAN uplink port channels are supported per Cisco UCS 6454 Fabric Interconnect, in both FC switch mode and FC end-host mode. Software Enablement for New Hardware (Listed in the New Hardware section) Cisco UCS 6454 Fabric Interconnect EnhancementsThis release introduces support for the following features on the Cisco UCS 6454 Fabric Interconnect:.Support for Ethernet and Fibre Channel switching modes.In the Ethernet switching mode:.VLAN Port Count Optimization Enabled is not supported. Without VLAN Port Count Optimization Enabled, the Cisco UCS 6454 Fabric Interconnect supports 16000 PV count.In the Fibre Channel switching mode:.FCoE uplink is not supported.Support for splitting a single 40/100G QSFP port into four 10/25G ports using a supported breakout cable. These ports canbe used only as Ethernet uplink or FCoE uplink ports connecting to a 10/25G switch.

Software Enablement for New Hardware (Listed in the New hardware section) Cisco UCS 6454 Fabric InterconnectThis release introduces Cisco UCS 6454 Fabric Interconnects that support 10/25 Gigabit ports in the fabric with 40/100 Gigabit uplink ports. The Cisco UCS Manager Getting Started Guide, Release 4.0 provides details about the specific ports.

Cisco UCS Manager Release 4.0(1) supports only single link port channel for FC/FCoE between VIC 1455 or 1457 adapters thatare on direct-connect rack-servers, and UCS 6300 Series Fabric Interconnects.The following features are not supported on UCS VIC 1400 Series adapters:.VM-FEX for Hyper-V.VM-FEX for VMware.Dynamic vNICs.A port channel with four member ports on UCS VIC 1455 and 1457 adapters.usNIC on Cisco UCS C125 M5 ServersNew Generation SIOC for Cisco UCS S3260 Storage ServersSupport for S3260 M5 servers with a new server SIOC UCS-S3260-PCISIOC and the VIC 1400 Series adapter cards. Feature Enhancements.Pre-enablement support for Hyperflex 3.5 release features.Support for KMIP client on C480 M5 to support integration with key management servers.Support for the IPv6 option on PXE boot devices on Cisco UCS Manager managed C-Series and S-Series M4 servers.Support for the Login Profile feature, which provides the ability to block login requests to Cisco UCS Manager for a specific period after failed loginattempts. This feature is currently supported only on UCS 6454 Fabric Interconnects and on Cisco UCS Manager Release 4.0(1)and later releases.Deprecated Hardware and Software in Cisco UCS Manager Release 4.0.

Cisco UCS C-Series Rack-Mount Servers are managed by built-in standalone software— Cisco Integrated Management Controller(CiscoIMC). However, when a C-Series Rack-Mount Server is integrated with Cisco UCS Manager, the Cisco IMC does not manage the server anymore.Each Cisco UCS Manager release incorporates its corresponding C-Series Standalone release and some previous C-Series standalone releases. For example,Cisco UCS Manager Release 4.0(1) is integrated with C-Series Standalone Release 4.0(1) for the M5 servers and Release 3.0(4) for all M3 andM4 servers. Hence, it supports all the M5, M4 and M3 servers supported by C-Series Standalone releases.The following table lists the Cisco UCS Manager and C-Series software standalone releases for C-Series Rack-Mount Servers:Table 6. Cisco UCS Central IntegrationCisco UCS Manager Release 4.0 can only be registered with Cisco UCS Central, Release 2.0(1f) or higher.Supported Operating SystemsFor detailed information about supported operating system, see the interactive matrix.Supported Web BrowsersCisco UCS Manager GUIWeb BrowsersHTML5Microsoft Internet Explorer 11 or higherMozilla Firefox 45 or higherGoogle Chrome 45 or higherApple Safari version 9 or higherOpera version 35 or higherNetwork RequirementsFor using the device connector feature, you must configure HTTPS proxy settings.

The Cisco UCS Manager Administration Management Guide, Release 4.0 provides detailed information about configuring the device connector.Cross-Version Firmware Support. The Cisco UCS Manager A bundle software (Cisco UCS Manager, Cisco NX-OS, IOM and FEX firmware) can be mixed with previousB or C bundle releases on the servers (host firmware FW, BIOS, Cisco IMC, adapter FW and drivers).The following table lists the mixed A, B, and C bundle versions that are supported on Cisco UCS 6200, 6300, and 6454 fabricinterconnects:Table 7. In a mixed firmware configuration, we recommend that the minimum server bundle corresponds to the Minimum Software Version.The infrastructure must be at or above the Minimum Software Version.Table 12. The 40G backplane setting is not applicable for 22xx IOMs.Table 17.Transceiver modules and cables that are supported on a specific Fabric Interconnect are not always supported on all VIC adapters,IOMs, or FEXes that are compatible with that Fabric Interconnect. Detailed compatibility matrices for the transceiver modulesare available here:.S-Class transceivers, for example, QSFP-40G-SR4-S, do not support FCoE.Table 18. UCS Mini Supported Chassis Table 19. Minimum Software Versions for UCS Mini ChassisChassisMinimum Software VersionRecommended Software VersionUCSB-5108-AC23.0(1e)4.0(4b)UCSB-5108-DC23.0(2c)4.0(4b)UCS Mini Supported Blade and Rack Servers Table 20.

Transceiver modules and cables that are supported on a specific Fabric Interconnect are not always supported on all VIC adapters,IOMs, or FEXes that are compatible with that Fabric Interconnect.In a system with Cisco UCS 6454 Fabric Interconnects, you cannot downgrade from Cisco UCS Manager Release 4.0.See the Cisco UCS Manager Firmware Management Guide, Release 4.0 section for detailed upgrade paths.Do not downgrade systems equipped with LITE-ON 1050W PSUs to a Cisco UCS Manager release earlier than Release 4.0(2). The Cisco UCS Manager Capability Catalog is a set of tunable parameters, strings, and rules. Cisco UCS uses the catalog toupdate the display and configurability of components such as newly qualified DIMMs and disk drives for servers.The Capability Catalog is embedded in Cisco UCS Manager, but at times it is also released as a single image file to make updateseasier.The following table lists the PIDs added in this release and maps UCS software releases to the corresponding Capability Catalogfile.Table 21. Cisco usNIC support in the Libfabric and Open MPI open source packages is readily available from their community web sites( and, respectively).Cisco UCS Manager Release 3.1(3) and later releases no longer include Open MPI binary packages. Future UCS software driverbundles distributed through the usual Cisco software channels may not include binaries for the libfabric packages.

Cisco engineerscontinue to be active, core contributors in both the Libfabric and Open MPI communities, and will actively develop and supportusers through the usual community or commercial ISV support mechanisms (e.g., IBM Spectrum MPI).ResolvedCaveats. The following caveats are resolved in Release 4.0(4b):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvp40415After upgrading to Cisco UCS Manager 4.0(4a), a 'Persistent Memory configuration not matching' warning is seen on C-Series and B-Series M5 servers during service profileassociation.There was no functional impact from this issue. Association would still complete without any issues, and the server wouldsuccessfully boot to the host OS, if installed.This issue has been resolved. The following caveats are resolved in Release 4.0(4a):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvm66006After reconfiguring and reassociating service profiles, traffic hashed to one of the hif-pc members gets dropped.

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This happenedwhen DCBX did not converge properly on the impacted interface of the blade server.This issue has been resolved. The following caveats are resolved in Release 4.0(2e):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvn82697Despite the locale being defined on a sub-organization, remotely authenticated users could see all the organizations. Thisissue is now resolved.3.2(3g)A4.0(2e)A4.0(4a)ACSCvo19661Instead of broadcasting Fabric Interconnect Management IP addresses, UCS 6454 Fabric Interconnects were broadcasting KVM out-of-bandIP addresses through LLDP upstream ACI leafs and downstream to ESXi hosts through CDP.

This issue is fixed, and the FabricInterconnect now broadcasts the correct IP address.4.0(1c)A4.0(2e)ACSCvo64592When attempting to integrate a UCS C-Series server with Cisco UCS Manager Release 4.0 on UCS 6454 Fabric Interconnects, serverdiscovery failed. This issue is now resolved, and the rack server discovery succeeds.4.0(1a)A4.0(2e)A4.0(4a)ACSCvn77413Ethernet ports on a 6332 or 6332-16 UP Fabric Interconnect showed high input discard counts, but with no appreciable performanceimpact.This issue is now resolved.3.2(3h)A4.0(2e)AResolved Caveats in Release 4.0(2d). The following caveats are resolved in Release 4.0(2b):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvk63036Unable to form a SAN port-channel between a Cisco UCS Fabric Interconnect pair and a Cisco Fibre Channel switch, where theOrganizationally Unique ID (OUI) of the switch is one of the following:.003a9c.000831.d0a5a6This issue has been resolved.4.0(2a)A4.0(2b)ACSCvn91826In a setup with Cisco VIC 14xx adapters, server discovery no longer fails due to server ID range limitation. The server IDrange is now 1 to 254.4.0(2a)A4.0(2b)ACSCvk26441When running Cisco UCS Manager Release 4.0(2a) on UCS 6454 Fabric Interconnects, LDAP user login no longer fails if the group map rule has a role other than aaa and read-only.4.0(2a)A4.0(2b)ACSCvk53356When running Cisco UCS Manager Release 4.0(2a) on UCS 6454 Fabric Interconnects, an admin password could not be recovered using the password recovery procedure.This issue has been resolved.4.0(2a)A4.0(2b)AResolved Caveats in Release 4.0(2a). The following caveats are resolved in Release 4.0(2a):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvk62258CSCvm04161Making LLDP configuration changes on one node of a UCS S3260 server was causing the second server node to crash. The following caveats are resolved in Release 4.0(1c):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvh04307On Cisco HyperFlex nodes with SED drives, installing software packages on the storage controller VM failed with the followingerror:There are locked drives on the system, unlock them and retry deployment.The drives could become locked on hosts that were rebooted. The fix for this issue was integrated in Release 4.0(1a).Additionally, there was a scenario in which the drives could become locked on hosts that were cold powered down for a prolongedperiod and then rebooted.

The fix for this scenario was integrated in Release 4.0(1c).3.1(3c)C4.0(1c)CCSCvm14726Cisco UCS-FI-M6324 with the new SPI Flash device cannot boot with previous software releases. This is because the originalSPI Flash device used on UCS-FI-M6324 is no longer being produced; hence a pin-compatible replacement part is being used goingforward. However, due to the vendor and part ID changing, UCS-FI-M6324 equipped with the new part can only operate with OSversions that have support for the new part built in.This issue is now resolved.4.0(1a)A4.0(1c)ACSCvk30528In UEFI boot mode, Cisco UCS Managed C-Series servers failed to boot to the RHEL or ESXi OS installed on an iSCSI LUN configuredon an EMC storage device.

Instead, the server entered into the UEFI shell prompt after every reboot.This issue has been resolved. The server now boots to the OS correctly.4.0(1a)C4.0(1c)CResolved Caveats in Release 4.0(1b). The following caveats are resolved in Release 4.0(1b):Defect IDSymptomFirst Bundle AffectedResolved in ReleaseCSCvm17259In a system with a Cisco UCS Manager-managed C-Series rack server, the firmware for the UCSC-GPU-V100-32G GPU was not seenin the Host Firmware Pack (HFP) of the Firmware Policy after configuring the service profile for the server. This issue isnow resolved, and the firmware is visible in the HFP.4.0(1a)A4.0(1b)ACSCvm10391The Cisco UCS 6454 Fabric Interconnect was not sending any Call Home messages to the configured SMTP server.This issue has now been resolved.

Call Home messages are now being sent by the Cisco UCS 6454 Fabric Interconnect and receivedas emails at the configured SMTP server.4.0(1a)A4.0(1b)AResolved Caveats in Release 4.0(1a). The following caveats are open in Release 4.0(4a):Table 22. Intel ® Optane ™ Data Center Persistent Memory Modules - Intel Open CaveatsDefect IDSymptomWorkaroundFirst Bundle AffectedCSCvn77341Namespaces created under Red Hat Enterprise Linux 7.6 by using the in-box ndctl tool, may be seen in 'Critical' health statewhen examined in the BIOS Setup or the UEFI IPMCTL tool. However, the namespaces are healthy, and their functionality is notaffected.This is an issue with the Intel ® Optane ™ Data Center persistent memory module HII and UEFI IPMCTL tool.Intel IPS case filed.No known workaround. The following caveats are open in Release 4.0(2a):Defect IDSymptomWorkaroundFirst Bundle AffectedCSCvo13678UCS M5 rack servers with GPUs fail discovery during Cisco UCS Manager Release 4.0(2) rack server firmware install. The following caveats are open in Release 4.0(1c):Defect IDSymptomWorkaroundFirst Bundle AffectedCSCvo19661Instead of broadcasting Fabric Interconnect Management IP addresses, UCS 6454 Fabric Interconnects are broadcasting KVM out-of-bandIP addresses through LLDP upstream ACI leafs and downstream to ESXi hosts through CDP.This issue can impact ACI VMM provisioning of EPGs, which rely on correct CDP or LLDP information being sent.When using ACI VMM, changing the policy to pre-provision can avoid unexpected issues.4.0(1c)AResolved in 4.0(2e)AOpen Caveats for Release 4.0(1a).

The following caveats are open in Release 4.0(1a):Defect IDSymptomWorkaroundFirst Bundle AffectedCSCvm66006After reconfiguring and reassociating service profiles, traffic hashed to one of the hif-pc members gets dropped. Allowed WWPN and WWNN Ranges for a WWN PoolBeginning with Cisco UCS Manager Release 4.0(1a), the allowed WWPN and WWNN ranges for a WWN pool in Cisco UCS 6454 FIs are changed from:20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or 50:00:00:00:00:00:00:00to 5F:FF:FF:FF:FF:FF:FF:FFto20:00:00:00:00:00:00:00 to 20:FF: 00:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF: 00:FF:FF:FF:FF:FFThe third octet of the WWPN must remain 00.When Fibre Channel traffic is sent through the Cisco UCS infrastructure, the source WWPN is converted to a MAC address. Do not add a second port channel link between VIC 1455 or 1457 adapters that are on direct-connect rack-servers, and UCS 6300Series Fabric Interconnects.Exceeding Maximum CQ Value Results in Configuration FailureModifying the VMMQ adapter policy through the VMQ connection policy results in exceeding the maximum Completion Queue (CQ)value. Each VIC 1400 Series adapter supports a maximum of 1984 user-configurable hardware CQ resources. If this number isexceeded, the Out of CQ Resources error appears in the Cisco UCS Manager GUI, and vNIC creation fails with a configuration failure at service profile association.FC Uplink Port at 8 Gbps Must Use IDLE as Fill PatternCSCvj31676—For Cisco UCS 6454 fabric interconnect, if the FC uplink speed is 8 Gbps, set the fill pattern as IDLE on the uplinkswitch. If the fill pattern is not set as IDLE, FC uplinks operating at 8 Gbps might go to an errDisabled state, lose SYNCintermittently, or notice errors or bad packets.FI Port Does Not Auto-Detect Change in Port SpeedCSCvi45111—On a UCS rack-mount server with a UCS 14xx VIC ASIC, when you replace a 25G cable with a 10G cable, the correspondingFI port goes down and stays in a suspended state. Ports do not auto-detect the change in port speed from 25G to 10G.

To recoverfrom this state, decommission and then recommission the rack-mount server.C125 M5 Server Boot ModeCSCvj41626— C125 M5 Server supports only UEFI boot mode.Cisco VIC 1455 and 1457 ConnectivityThe FEX to FI uplink should be configured in port channel. VNIC MTU configurationFor VIC 14xx adapters:.The vNIC's MTU size can be changed from the host interface settings. The value must be equal to or less than the MTU specifiedin the associated QoS system class. If this MTU value exceeds the MTU value in the QoS system class, packets may be droppedduring data transmission.When the Overlay network is configured, the overall MTU size must not exceed the MTU value in the QoS system class.Microsoft Standalone NIC Teaming and Virtual Machine Queue Support for VIC14xx AdaptersMicrosoft standalone NIC teaming works only with Virtual Machine Queue (VMQ). For VIC 14xx adapters, VMQ is VMMQ with singlequeue. In order to support this, you must create a new VMMQ adapter policy with 1 TQ, 1 RQ and 2 CQ combination and assignit to the VMQ Connection Policy.Chassis Discovery Policy and Chassis Connection PolicyChassis Discovery Policy and Chassis Connection Policy are not supported for new generation SIOC for M5 servers.