Cisco Nexus 9000 Series NX-OS Release Notes, Release 7.0(3)I4(8z)

Cisco Nexus 9000 Series NX-OS Release Notes, Release 7.0(3)I4(8z)

 

This document describes the features, caveats, and limitations for Cisco NX-OS Release 7.0(3)I4(8z) software for use on the following switches:

■      Cisco Nexus 9000 Series

■      Cisco Nexus 31128PQ

■      Cisco Nexus 3164Q

■      Cisco Nexus 3232C

■      Cisco Nexus 3264Q

Use this document in combination with documents listed in Related Documentation.

NOTE: Cisco NX-OS Release 7.0(3)I4(8z) is a patch software release with a fix for specific issues as identified in the Resolved Caveats table. You should refer to the NX-OS System Software Release directory for general deployment software.

Table 1 shows the online change history for this document.

Table 1 Online History Change

 

Contents

Introduction. 3

System Requirements. 3

New and Changed Information. 12

Caveats. 12

Upgrade and Downgrade. 13

Limitations. 14

Unsupported Features. 17

Related Documentation. 22

Obtaining Documentation and Submitting a Service Request. 22

 

Introduction

Cisco NX-OS software is a data center-class operating system designed for performance, resiliency, scalability, manageability, and programmability at its foundation. The Cisco NX-OS software provides a robust and comprehensive feature set that meets the requirements of virtualization and automation in mission-critical data center environments. The modular design of the Cisco NX-OS operating system makes zero-impact operations a reality and enables exceptional operational flexibility.

The Cisco Nexus 9000 Series uses an enhanced version of Cisco NX-OS software with a single binary image that supports every switch in the series, which simplifies image management.

System Requirements

This section includes the following sections:

■      Supported Cisco Software Releases

■      Supported Device Hardware

■      Supported Optics

■      Supported FEX Modules

Supported Cisco Software Releases

Table 2 summarizes information about the Cisco Nexus platforms and software release versions that Cisco OpenFlow Plug-in supports.

Table 2 Cisco Plug-in for OpenFlow Compatibility Matrix

 

Supported Device Hardware

The tables below list the Cisco Nexus 9000 Series hardware that Cisco NX-OS Release 7.0(3)I4(8z) supports. For additional information about the supported hardware, see the Hardware Installation Guide for your Cisco Nexus 9000 Series device.

■      Table 3 lists the Cisco Nexus 9000 Series fabric modules

■      Table 4 lists the Cisco Nexus 9000 Series fans and fan trays

■      Table 5 lists the Cisco Nexus 9000 Series line cards

■      Table 6 lists the Cisco Nexus 9000 Series power supplies

■      Table 7 lists the Cisco Nexus 9000 Series supervisor modules

■      Table 8 lists the Cisco Nexus 9000 Series system controllers

■      Table 9 lists the Cisco Nexus 9000 Series uplink modules

■      Table 11 lists the 3232C and 3264Q switch hardware

■      Table 12 lists the Cisco Nexus 3164Q switch hardware

■      Table 13 lists the Cisco Nexus 31128PQ switch hardware

Table 3 Cisco Nexus 9000 Series Fabric Modules

 

Table 4 Cisco Nexus 9000 Series Fans and Fan Trays

Table 5 Cisco Nexus 9500 Platform Line Cards

Table 6 Cisco Nexus 9000 Series Power Supplies

Table 7 Cisco Nexus 9500 Platform Supervisor Modules

Table 8 Cisco Nexus 9000 Series Switches

Table 9 Cisco Nexus 9000 Series Uplink Modules

Table 10 Cisco Nexus 9500 Platform System Controller

Table 11 Cisco Nexus 3232C and 3264Q Switch Hardware

NOTE: Beginning with Cisco NX-OS Release 7.0(3)I4(3), 25G CVR-2QSFP28-8SFP is supported on the Cisco Nexus 3232C switches.

Table 12 Cisco Nexus 3164Q Switch Hardware

Table 13 Cisco Nexus 3164Q Switch Hardware

NOTE: The Cisco Nexus M6PQ-E uplink module and the Cisco Nexus 9372PX-E and 9372TX-E switches need to run the following minimum Cisco NX-OS releases:

 

o    7.0(3)I2(2d)

o    7.0(3)I2(2e)

o    7.0(3)I3(2)

o    7.0(3)I4(1)

Supported Optics

See the Cisco 10-Gigabit Ethernet Transceiver Modules Compatibility Matrix for a list of supported optical components.

Supported FEX Modules

Cisco NX-OS Release 7.0(3)I4(8z) supports the following FEXes (Fabric extenders) on Cisco Nexus 9332PQ, 9372PX, 9372PX-E, 9396PX and 9500 Platform Switches:

■      Cisco Nexus 2224TP

■      Cisco Nexus 2232PP

■      Cisco Nexus 2232TM and 2232TM-E

■      Cisco Nexus 2248PQ

■      Cisco Nexus 2248TP and 2248TP-E

■      Cisco Nexus 2348TQ

■      Cisco Nexus 2348UPQ

■      Cisco Nexus B22Dell

■      Cisco Nexus B22HP

■      Cisco Nexus NB22FTS

■      Cisco Nexus NB22IBM

Note: Please note the following:

■      The 9408 and line card is not supported with the 2300 FEX.

■      Cisco Nexus 9300 platform switches do not support FEX on uplink modules (ALE).

■      For FEX HIF port channels, we recommend that you enable STP port type edge using the spanning tree port type edge [trunk] command.

■      The Cisco 2248PQ, 2348TQ, and 2348UPQ FEXes support connections to the Nexus 9300 or 9500 platform switches by using supported breakout cables to connect a QSFP+ uplink on the FEX and an SFP+ link on the parent switch (4x10G links).

Note: For Cisco Nexus 9500 switches, 4x10G breakout for FEX connectivity is not supported.

New and Changed Information

This section lists the following topics:

■      New Hardware Features in Cisco NX-OS Release 7.0(3)I4(8z)

■      New Software Features in Cisco NX-OS Release 7.0(3)I4(8z)

New Hardware Features in Cisco NX-OS Release 7.0(3)I4(8z)

Cisco NX-OS Release 7.0(3)I4(8z) does not include new hardware features.

New Software Features in Cisco NX-OS Release 7.0(3)I4(8z)

Cisco NX-OS Release 7.0(3)I4(8z) does not include new software features.

Caveats

This section includes the following topics:

■      Resolved Caveats—Cisco NX-OS Release 7.0(3)I4(8z)

■      Open Caveats—Cisco NX-OS Release 7.0(3)I4(8z)

■      Known Behaviors—Cisco NX-OS Release 7.0(3)I4(8z)

Resolved Caveats—Cisco NX-OS Release 7.0(3)I4(8z)

Table 14 lists the Resolved Caveats in Cisco NX-OS Release 7.0(3)I4(8z). Click the bug ID to access the Bug Search tool and see additional information about the bug.

Table 14 Resolved Caveats in Cisco NX-OS Release 7.0(3)I4(8z)

Open Caveats—Cisco NX-OS Release 7.0(3)I4(8z)

Table 5 Open Caveats in Cisco NX-OS Release 7.0(3)I4(8z)

 

 NOTE: Although this is a generally available patch release with the fixes listed in the Resolved Caveats, it is targeted for a specific customer’s deployment requirements.

Known Behaviors—Cisco NX-OS Release 7.0(3)I4(8z)

Table 6 Known Behaviors in Cisco NX-OS Release 7.0(3)I4(8z)

Upgrade and Downgrade

To perform a software upgrade or downgrade, follow the instructions in the Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide, Release 7.x.

For information about an In Service Software Upgrade (ISSU), see the Cisco NX-OS ISSU Support application.

Note: Upgrading from Cisco NX-OS 7.0(3)I1(2), 7.0(3)I1(3), or 7.0(3)I1(3a) requires installing a patch for Cisco Nexus 9500 platform switches only. For more information on the upgrade patch, see Upgrade Patch Instructions.

Limitations

This section lists limitations related to Cisco NX-OS Release 7.0(3)I4(8z).

■      PTP supports hardware and software corrections. By default, PTP does hardware corrections. This is supported only on the Cisco Nexus 9396PX switch. The show running-config all | grep correction command displays if PTP correction is in effect.

To disable hardware corrections, enter the no ptp correction hardware command. For the configuration to take effect, save the configuration and reload the switch. Enter the show running-config all | grep correction command to confirm.

If you are running PTP on the Cisco Nexus 9396PX, enter the no ptp hardware correction command.

■      Ingress queuing policy is supported only at the system level (and not at the interface level) for Cisco Nexus 9508 switches with the X9732C-EX line card and Cisco Nexus 93108TC-EX and 93180YC-EX switches.

■      QinVNI  has the following limitations:

¯    Single tag is supported on Cisco Nexus 9300 platform switches. It can be enabled by unconfiguring the overlay-encapsulation vxlan-with-tag command from interface nve:

N9564PX-2(config)# int nve 1

N9564PX-2(config-if-nve)# no overlay-encapsulation vxlan-with-tag

N9564PX-2# sh run int nve 1

                            

!Command: show running-config interface nve1

!Time: Wed Jul 20 23:26:25 2016

 

version 7.0(3u)I4(2u)

 

interface nve1

  no shutdown

  source-interface loopback0

  host-reachability protocol bgp

  member vni 900001 associate-vrf

  member vni 2000980

    suppress-arp

    mcast-group 225.4.0.1

 

¯    Single tag is not supported on Cisco Nexus 9500 platform switches; only double tag is supported.

¯    When upgrading from Cisco NX-OS Release 7.0(3)I3(1) or 7.0(3)I4(1) to Cisco NX-OS Release 7.0(3)I4(8z) with Cisco Nexus 9300 platform switches without the overlay-encapsulation vxlan-with-tag command under interface nve, you should add overlay-encapsulation vxlan-with-tag under the nve interface in the older release before starting the ISSU upgrade. Cisco NX-OS Releases 7.0(3)I3(1) and 7.0(3)I4(1) support double tag. Cisco NX-OS Release 7.0(3)I4(8z) also supports single tag.

■      Resilient hashing (port-channel load-balancing resiliency) and VXLAN configurations are not compatible with VTEPs using ALE uplink ports. Please note that resilient hashing is disabled by default.

■      Fast reload support is available for N9K-C9232C and N9K-C92304QC.

■      CoPP (Control Plane Policing) cannot be disabled. If you attempt to disable it in Cisco NX-OS Release 7.0(3)I4(8z), an error message appears. In previous releases, attempting to disable CoPP causes packets to be rate limited at 50 packets per seconds.

■      Skip CoPP policy option has been removed from the Cisco NX-OS initial setup utility because using it can impact the control plane of the network.

■      When a switch comes up with Cisco NX-OS Release 7.0(3)I4(8z) and a custom CoPP policy, a syslog warning is logged. This warning is for informational purposes only.

2017 Mar 10 05:06:11 tim %ACLQOS-SLOT1-4-ACLQOS_WARNING: ACLQOS Warning: COPP static acl:acl-mac-l2pt is missing, check 'show system internal access-list copp static-acls' for required static acls

A similar warning is logged when a custom CoPP policy is changed. This limitation applies to Cisco Nexus 9300 and 921xx platform switches and to N9K-X9732C-EX line cards.

■      hardware profile front portmode command is not supported on the Cisco Nexus 9000 Series switches.

■      PV (Port VLAN) configuration through an interface range is not supported.

■      Layer 3 routed traffic for missing Layer 2 adjacency information is not flooded back onto VLAN members of ingress units when the source MAC address of routed traffic is a non-VDC (Virtual Device Context) MAC address. This limitation is for hardware flood traffic and can occur when the SVI (Switched Virtual Interface) has a user-configured MAC address.

■      neighbor-down fib-accelerate command is supported in a BGP-only environment.

■      Uplink modules should not be removed from a Cisco Nexus 9300 platform switch that is running Cisco NX-OS Release 7.0(3)I4(8z). The ports on uplink modules should be used only for uplinks.

■      PortLoopback and BootupPortLoopback tests are not supported.

■      PFC (Priority Flow Control) and LLFC (Link-Level Flow Control) are supported for all Cisco Nexus 9300 and 9500 platform switches except for the 100G 9408PC line card and the 100G M4PC generic expansion module (GEM).

■      FEXes configured with 100/full-duplex speed, without explicitly configuring the neighboring device with 100/full-duplex speed, will not pass data packet traffic properly. This occurs with or without the link appearing to be “up.”

¯    no speed–Auto negotiates and advertises all speeds (only full duplex).

¯    speed 100–Does not auto negotiate; pause cannot be advertised. The peer must be set to not auto negotiate (only 100 Mbps full duplex is supported).

¯    speed 1000–Auto negotiates and advertises pause (advertises only for 1000 Mbps full duplex).

■      Eight QoS groups are supported only on modular platforms with the Cisco Nexus 9300 N9K-M4PC-CFP2  uplink module, and the following Cisco Nexus 9500 platform line cards:

¯    N9K-X9432PQ

¯    N9K-X9464PX

¯    N9K-X9464TX

¯    N9K-X9636PQ

■      Cisco NX-OS Release 7.0(3)|4(2) supports flooding for Microsoft Network Load Balancing (NLB) unicast mode on Cisco Nexus 9500 platform switches but not on Cisco Nexus 9300 platform switches. NLB is not supported in max-host system routing mode. NLB multicast mode is not supported on Cisco Nexus 9500 or 9300 platform switches.

Note: To work around the situation of Unicast NLB limitation, Cisco can statically hard code the address resolution protocol (ARP) and MAC address pointing to the correct interface. Please refer to bug ID CSCuq03168 in detail in the Open Caveats section.

■      TCAM resources are not shared when:

¯    Applying VACL (VLAN ACL) to multiple VLANs

¯    Routed ACL (Access Control List) is applied to multiple SVIs in the egress direction

■      Cisco Nexus 9000 Series switch hardware does not support range checks (layer 4 operators) in egress TCAM. Because of this, ACL/QoS policies with layer 4 operations-based classification need to be expanded to multiple entries in the egress TCAM. Egress TCAM space planning should take this limitation into account.

■      Applying the same QoS policy and ACL on multiple interfaces requires applying the qos-policy with the no-stats option to share the label.

■      Multiple port VLAN mappings configured on an interface during a rollback operation causes the rollback feature to fail.

■      The following switches support QSFP+ with the QSA (QSFP to SFP/SFP+ Adapter) (40G to 10G QSA):

¯    N9K-C93120TX

¯    N9K-C93128TX

¯    N9K-C9332PQ

¯    N9K-C9372PX

¯    N9K-C9372PX-E

¯    N9K-C9372TX

¯    N9K-C9396PX

       Note: The Cisco Nexus 9300 support for the QSFP+ breakout has the following limitations:

■      Only 10G can be supported using QSA on 40G uplink ports on Cisco Nexus 9300 platform switches in NX-OS. 

■      1G with QSA is not supported.

■      For the Cisco Nexus 9332PQ switch, all ports except 13-14 and 27-32 can support breakout

■      All ports in the QSA speed group must operate at the same speed (see the configuration guide)

■      The following switches support the breakout cable (40G ports to 4x10G ports):

¯    N9K-C9332PQ

¯    N9K-X9436PQ

¯    N9K-X9536PQ

¯    N9K-C93180YC-EX

¯    N9K-C93108TC-EX

¯    N9K-X9732C-EX line card

■      Weighted ECMP (Equal-Cost Multi-Path) is not supported on Cisco Nexus 9000 Series switches.

■      Limitations for ALE (Application Link Engine) uplink ports are listed at the following URL:

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/ale_ports/b_Limitations_for_ALE_Uplink_Ports_on_Cisco_Nexus_9000_Series_Switches.html

Unsupported Features

This section lists features that are not supported for private VLANs in the current release.

■      VXLAN

■      DHCP

■      FEX

■      Cisco Nexus 3232C and 3264Q Switches

■      Cisco 9200 Nexus Series, 93108TC-EX, and 93180YC-EX Switches

■      Cisco Nexus 9408 Line Card and 9300 Platform Switches

■      Cisco Nexus 9732C-EX Line Card

■      Other Unsupported Features

VXLAN

This section lists VXLAN features that are not supported.

■      ACL and QoS for VXLAN traffic in the network-to-access direction are not supported.

■      Consistency checkers are not supported for VXLAN tables.

■      DHCP snooping and DAI features are not supported on VXLAN VLANs.

■      IGMP snooping is not supported on VXLAN VLANs.

■      Native VLANs for VXLAN are not supported. All traffic on VXLAN Layer 2 trunks needs to be tagged.

■      QoS buffer-boost is not applicable for VXLAN traffic.

■      QoS classification is not supported for VXLAN traffic in the network-to-access direction.

■      Static MAC pointing to remote VTEP (VXLAN Tunnel End Point) is not supported with BGP EVPN (Ethernet VPN).

■      TX SPAN (Switched Port Analyzer)  for VXLAN traffic is not supported for the access-to-network direction.

■      VXLAN routing and VXLAN Bud Nodes features on the 3164Q platform are not supported.

VXLAN ACL Limitations

The following ACL related features are not supported:

■      Ingress RACL that is applied on an uplink Layer 3 interface that matches on the inner or outer payload in the network-to-access direction (decapsulated path).

■      Egress RACL that is applied on an uplink Layer 3 interface that matches on the inner or outer payload in the access-to-network direction (encapsulated path).

■      Egress VACL for decapsulated VXLAN traffic.

Note: We recommend that you use a PACL or VACL on the access side to filter out traffic entering the overlay network.

DHCP

DHCP subnet broadcast is not supported.

FEX

■      VTEP connected to FEX host interface ports is not supported.

■      ASCII replay with FEX needs be done twice for HIF configurations to be applied. The second time should be done after the FEXs have come up.

■      Cisco Nexus 9300 platform switches do not support FEX on uplink modules (ALE).

■      FEX is supported only on the Cisco Nexus 9332PQ, 9372PX, 9372PX-E, 9396PX, and 9500 platform switches (FEX is not supported on the N9K-X9732C-EX line card, 93180YC-EX and 93108TC-EX switches, and Cisco Nexus 9200 platform switches).

■      FEX vPC is not supported between any model of FEX and the Nexus 9300 (TOR) and 9500 platform switches (EOR) as the parent switches.

■      IPSG (IP Source Guard) is not supported on FEX ports.

Cisco Nexus 3232C and 3264Q Switches

The following features are not supported for the Cisco Nexus 3232C and 3264Q switches:

■      3264Q and 3232C platforms do not support the PXE boot of the NXOS image from the loader.

■      Automatic negotiation support for 25G and 50G ports on the Cisco Nexus 3232C switch

■      Cisco Nexus 2000 Series Fabric Extenders (FEX)

■      Cisco NX-OS to ACI conversion (The Cisco Nexus 3232C and 3264Q switches operate only in Cisco NX-OS mode.)

■      DCBXP

■      Designated router delay

■      DHCP subnet broadcast is not supported

■      Due to a Poodle vulnerability, SSLv3 is no longer supported

■      FCoE NPV

■      Intelligent Traffic Director (ITD)

■      ISSU

■      Policy-based routing (PBR)

■      Port loopback tests

■      Resilient hashing

■      SPAN on CPU as destination

■      Virtual port channel (vPC) peering between Cisco Nexus 3232C or 3264Q switches and Cisco Nexus 9300 platform switches or between Cisco Nexus 3232C or 3264Q switches and Cisco Nexus 3100 Series switches

■      VXLAN

 

Cisco Nexus 9200 and 9300-EX Series Switches

The following features are not supported for the Cisco Nexus 9200 and 9300-EX Series switches:

■      Segment routing, static MPLS, and MPLS stripping (supported for Cisco Nexus 9200 platform switches but not for Cisco Nexus 93108TC-EX and 93180YC-EX switches)

■      64-bit ALPM routing mode

■      9272PQ and 92160YC platforms do not support the PXE boot of the NXOS image from the loader.

■      ACL filters to span subinterface traffic on the parent interface

■      Cisco Nexus 2000 Series Fabric Extenders

■      DCBXP for LLDP

■      Egress port ACLs

■      Egress QoS policer or marking

■      FCoE NPV

■      FEX

■      GRE v4 payload over v6 tunnels

■      Intelligent Traffic Director

■      IP length-based matches

■      IPinIP on 92160

■      ISSU

■      Layer 2 Q-in-Q (supported for Cisco Nexus 9300-EX Series switches but not for Cisco Nexus 9200 Series switches)

■      Micro-burst detection

■      MTU (Multi Transmission Unit) checks for packets received with an MPLS header

■      OpenFlow, due to a hardware limitation

■      Packet-based statistics for traffic storm control (only byte-based statistics are supported)

■      Policy-based routing

■      PV routing for VXLAN

■      PVLANs

■      Q-in-VNI and Q-in-Q for VXLAN  

■      Resilient hashing for ECMP

■      Resilient hashing for port-channel

■      Rx SPAN for multicast if the SPAN source and destination are on the same slice and no forwarding interface is on the slice

■      sFlow

■      Traffic storm control for copy-to-CPU packets

■      Traffic storm control with unknown multicast traffic

■      Tx SPAN for multicast, unknown multicast, and broadcast traffic

■      VACL redirects for TAP aggregation

Cisco Nexus 9408 Line Card and 9300 Platform Switches

The following features are not supported for the Cisco Nexus N9K-X9408PC-CFP2 line card and Cisco Nexus 9300 platform switches with generic expansion modules (N9K-M4PC-CFP2):

■      Breakout ports

■      Port-channel (No LACP)

■      vPC

■      MCT (Multichassis EtherChannel Trunk)

■      FEX (this applies to the 9408 and –EX switches, not all 9300 platform switches)

■      PTP (Precision Time Protocol)

■      PFC/LLFC

■      802.3x

■      PVLAN

■      Storm Control

■      VXLAN access port

■      SPAN destination/ERSPAN destination IP

■      Shaping support on 100g port is limited

■      Only support 40G flows

Cisco Nexus 9732C-EX Line Card

The following features are not supported for Cisco Nexus 9508 switches with an N9K-X9732C-EX line card:

■      FEX

■      TAP aggregation

■      SPAN port-channel destinations

■      Marker packet support for ERSPAN Type 3

 Other Unsupported Features

The following lists other features not supported in the current release:

■      Cisco Nexus 9300 platform switches do not support the 64-bit ALPM routing mode.

■      Due to a Poodle vulnerability, SSLv3 is no longer supported.

■      IPSG is not supported on the following:

¯    The last six 40G physical ports on the 9372PX, 9372TX, and 9332PQ switches

¯    All 40G physical ports on the 9396PX, 9396TX, and 93128TX switches

Related Documentation

The entire Cisco Nexus 9000 Series NX-OS documentation set is available at the following URL:

http://www.cisco.com/c/en/us/support/switches/nexus-9000-series-switches/tsd-products-support-series-home.html

The Cisco Nexus 3164Q Switch - Read Me First is available at the following URL:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3164/sw/6x/readme/b_Cisco_Nexus_3164Q_Switch_Read_Me_First.html

The Cisco Nexus 31128PQ Switch - Read Me First is available at the following URL:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus31128/sw/readme/b_Cisco_Nexus_31128PQ_Switch_Read_Me_First.html

The Cisco Nexus 3232C/3264Q Switch - Read Me First is available at the following URL:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3232and3264/sw/7x/readme/b_Cisco_Nexus_3232C_and_3264Q_Switch_Read_Me_First.html

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Cisco Nexus 9000 Series NX-OS Release Notes, Release 7.0(3)I4(8z)

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