Cisco NX-OS Release 11.1(1j) Release Notes for Cisco Nexus 9000 Series ACI-Mode Switches
Available Languages
Cisco NX-OS Release 11.1(1j) Release Notes for Cisco Nexus 9000 Series ACI-Mode Switches
This document describes the features, caveats, and limitations for Cisco NX-OS software that runs on Cisco Nexus 9000 Series Application Centric Infrastructure (ACI) switches. Use this document in combination with the Cisco Application Policy Infrastructure Controller, Release 1.1(1j), Release Notes. Additional product documentation is listed in the “Related Documentation” section.
Release notes are sometimes updated with new information about restrictions and caveats. See the following website for the most recent version of the Cisco NX-OS Release 11.1(1j) Release Notes for Cisco Nexus 9000 Series ACI-Mode Switches:
Table 1 shows the online change history for this document.
Table 1. Online History Change
| Date | Description |
| June 14, 2015 | Created the release notes for Release 11.1(1j) |
| June 15, 2015 | ■ Added link to the APIC release notes in the New Software Features in Cisco NX-OS Release 11.1(1j) section ■ Added CSCuu66310 to Known Behaviors. |
| June 17, 2015 | Added the following to Supported FEX Models: ■ N2K-B22IBM-P ■ N2K-B22DELL-P |
| June 18, 2015 | Updated New Documentation section. |
| July 9, 2015 | Fixed descriptions of breakout support and the options for connecting the N2348UPQ to switches in the Compatibility Information section. |
| August 23, 2015 | In the Resolved Caveats section, added CSCur14844 and CSCur84296. |
| December 9, 2015 | Fixed incorrect URLs to the documentation on cisco.com. |
| March 1, 2016 | In the Compatibility Information, fixed an incorrect reference to a leaf switch. |
| April 7, 2016 | In the Caveats section, moved caveat CSCut91959 from the resolved s to the open table. |
Contents
This document includes the following sections:
■ Cisco Nexus 9000 Series ACI-Mode
■ Caveats
Cisco Nexus 9000 Series ACI-Mode
Cisco NX-OS Software for the Cisco Nexus 9000 Series is a data center, purpose-built, operating system designed with performance, resiliency, scalability, manageability, and programmability at its foundation. It provides a robust and comprehensive feature set that meets the requirements of virtualization and automation in data centers
Cisco NX-OS Release 11.1 works only on Cisco Nexus 9000 Series switches in ACI Mode.
See Table 2 for a list of modules that are supported on Cisco Nexus 9000 Series switches in ACI Mode.
Supported Hardware
Table 2 lists the hardware that the Cisco Nexus 9000 Series ACI Mode switches support.
Table 2. Cisco Nexus 9000 Series Hardware.
| Hardware Type | Product ID | Description |
| Chassis | N9K-C9504 | Cisco Nexus 9504 chassis with four slots |
| Chassis | N9K-C9508 | Cisco Nexus 9508 chassis with 8 slots |
| Chassis component | N9K-C9508-FAN | Fan tray |
| Chassis component | N9k-PAC-3000W-B | Cisco Nexus 9500 3000W AC power supply, port side intake |
| Pluggable module (GEM) | N9K-M6PQ | 6-port |
| Pluggable module (GEM) | N9K-M12PQ | 12-port or 8-port |
| Spine switch | N9K-C9336PQ | Cisco Nexus 9336PQ switch, 36-port 40 Gigabit Ethernet QSFP |
| Spine switch | N9K-C9508-B1 | Cisco Nexus 9508 chassis bundle with 1 supervisor module, 3 power supplies, 2 system controllers, 3 fan trays, and 3 fabric modules |
| Spine switch | N9K-C9508-B2 | Cisco Nexus 9508 chassis bundle with 1 supervisor module, 3 power supplies, 2 system controllers, 3 fan trays, and 6 fabric modules |
| Spine switch | N9K-C9516 | Cisco Nexus 9516 switch with 16 linecard slots (slots 1-8 only) |
| Spine switch fan | N9K-C9300-FAN3 | Port side intake fan |
| Spine switch fan | N9K-C9300-FAN3-B | Port side exhaust fan |
| Spine switch module | N9K-C9504-FM | Cisco Nexus 9504 fabric module |
| Spine switch module | N9K-C9508-FM | Fabric module |
| Spine switch module | N9K-X9736PQ | Cisco Nexus 9500 36-port, 40 Gigabit Ethernet QSFP aggregation module |
| Switch module | N9K-SC-A | Cisco Nexus 9500 Series system controller |
| Switch module | N9K-SUP-A | Cisco Nexus 9500 Series supervisor module |
| Switch module | N9K-SUP-B | Cisco Nexus 9500 Series supervisor module |
| Top-of-rack (ToR) leaf switch | N9K-C93128TX | Cisco Nexus 9300 96-port, 1-/10-Gbps BASE-T and 6-port or 8-port, 40 Gigabit Ethernet QSFP switch |
| Top-of-rack (ToR) leaf switch | N9K-C9332PQ | Cisco Nexus 9332PQ 32-port 40 Gigabit Ethernet QSFP+ Top-of-rack (ToR) Layer 3 switch |
| Top-of-rack (ToR) leaf switch | N9K-C9372PX | Cisco Nexus 9372PX 48-port, 10 Gigabit Ethernet SFP+ and 6-port 40 Gigabit Ethernet QSFP+ Top-of-rack (ToR) Layer 3 switch |
| Top-of-rack (ToR) leaf switch | N9K-C9372TX | Cisco Nexus 9372TX 48-port, 1/10 Gbps Base-T and 6-port, 40 Gigabit Ethernet QSFP Top-of-rack (ToR) Layer 3 switch |
| Top-of-rack (ToR) leaf switch | N9K-C9396PX | Cisco Nexus 9300 48-port, 1/10 Gigabit Ethernet SFP+ and 6-port or 12-port, 40 Gigabit Ethernet QSFP switch |
| Top-of-rack (ToR) leaf switch | N9K-C9396TX | Cisco Nexus 9300 48-port, 1/10 Gbps Base-T and 6-port or 12-port, 40 Gigabit Ethernet QSFP switch |
| Top-of-rack (ToR) leaf switch power supply unit | UCSC-PSU-930WDC V01 | Port side intake DC power supply compatible with all ToR leaf switches |
| Top-of-rack (ToR) leaf switch power supply unit | N9K-PAC-650W-B | 650W AC Power supply, port side exhaust pluggable |
| Top-of-rack (ToR) leaf switch power supply unit | N9K-PAC-650W | 650W AC Power supply, port side intake pluggable |
| Top-of-rack (ToR) leaf switch power supply unit | N9K-PAC-1200W-B | 1200W AC Power supply, port side exhaust pluggable |
| Top-of-rack (ToR) leaf switch power supply unit | N9K-PAC-1200W | 1200W AC Power supply, port side intake pluggable |
| Top-of-rack (ToR) leaf switch power supply unit | N9K-PUV-3000W-B | 3000W AC Power supply, port side exhaust pluggable |
| Top-of-rack (ToR) leaf switch fan | NXA-FAN-30CFM-F | Port side exhaust fan |
| Top-of-rack (ToR) leaf switch fan | NXA-FAN-30CFM-B | Port side intake fan |
Supported FEX Models
Table 3 lists the FEX models that the Cisco Nexus 9000 Series ACI Mode switches support. For more information on the FEX models, see Cisco Nexus 2000 Series Fabric Extenders Data Sheet.
Note: FEX requires software version 5.x or later to be brought up successfully.
Table 3. Supported FEX Models.
| Product ID | Description |
| N2K-B22DELL-P | B22 FEX for Dell |
| N2K-B22IBM-P | B22 FEX for IBM |
| N2K-C2248PQ-10GE | Cisco Nexus 2248PQ 10GE Fabric Extender, 2PS, 4 Fan Module, 48x1/10GE (req SFP/SFP+) + 4x40G QSFP+(req QSFP+), choice of airflow and power supply |
| N2K-C2248TP-1GE | Cisco Nexus 2248TP Series 1GE Fabric Extender, 2 AC PS, 1 Fan Module (Standard Airflow/port side exhaust), 48x100/1000Base-T + 4x10GE (req SFP+), same as N2K-C2248TP |
| N2K-C2248TP-E-1GE | Cisco Nexus 2248TP-E Series 1GE Fabric Extender, 2PS, 1 Fan Module, 48x100/1000Base-T + 4x10GE (req SFP+), 32MB buffer, choice of airflow and power supply |
| N2K-C2348UPQ | 48 100Mῖ/1/10 Gigabit Ethernet and Unified Port host interfaces (SFP+) and up to 6ῖ QSFP+ 10/40 Gigabit Ethernet fabric interfaces. |
| N2K-C2232PP-10GE | Cisco Nexus 2232PP Series 10GE Fabric Extender, 2 AC PS, 1 Fan Module (Standard Airflow/port side exhaust), 32x1/10GE (req SFP/SFP+) + 8x10GE (req SFP+), same as N2K-C2232PP |
| N2K-C2232TM-E-10GE | Cisco Nexus 2232TM-E Series 10GBASE-T Fabric Extender, 2PS, 1 Fan Module, 32x1/10GBase-T + 8x10GE Module (req SFP+), choice of airflow and power supply |
New and Changed Information
This section lists the new and changed features in Release 11.1(1j).
New Hardware Features
Cisco NX-OS Release 11.1(1j) supports the following new hardware features:
■ The Cisco Nexus 2348UPQ (N2K-C2348UPQ) FEX module
■ The Cisco Nexus 9516 spine switch (N9K-C9516) with 16 linecard slots (slots 1-8 only)
New Software Features
For new software features, see the Cisco APIC 1.1(1j) Release Notes.
Installation Notes
For installation instructions, see the Cisco ACI Fabric Hardware Installation Guide.
Compatibility Information
■ Cisco NX-OS Release 11.1(1j) supports the hardware and software listed on the ACI Ecosystem Compatibility List and the Cisco AVS, Release 4.2(1)SV2(2.3).
■ The breakout of 40G ports to 4x10G on the N9332PQ switch is not supported in ACI-Mode.
■ To connect the N2348UPQ to ACI leaf switches, the following options are available:
— Directly connect the 40G FEX ports on the N2348UPQ to the 40G switch ports on the N9332PQ switch
— Break out the 40G FEX ports on the N2348UPQ to 4x10G ports and connect to the N9396PX or N9372PX switches
■ To connect the APIC (the controller cluster) to the ACI fabric, it is required to have a 10G interface on the ACI leaf. You cannot connect the APIC directly to the N9332PQ ACI spine.
Usage Guidelines
■ The current list of protocols that are allowed (and cannot be blocked through contracts) include the following. Some of the protocols have SrcPort/DstPort distinction.
Note: Also see the APIC release notes for policy information: https://www.cisco.com/c/en/us/support/cloud-systems-management/application-policy-infrastructure-controller-apic/tsd-products-support-series-home.html
— UDP DestPort 161: SNMP. These cannot be blocked through contracts. Creating an SNMP ClientGroup with a list of Client-IP Addresses restricts SNMP access to only those configured Client-IP Addresses. If no Client-IP address is configured, SNMP packets are allowed from anywhere.
— TCP SrcPort 179: BGP
— TCP DstPort 179: BGP
— OSPF
— UDP DstPort 67: BOOTP/DHCP
— UDP DstPort 68: BOOTP/DHCP
— IGMP
— PIM
— UDP SrcPort 53: DNS replies
— TCP SrcPort 25: SMTP replies
— TCP DstPort 443: HTTPS
— UDP SrcPort 123: NTP
— UDP DstPort 123: NTP
■ Leafs and spines from two different fabrics cannot be connected regardless of whether the links are administratively kept down.
Caveats
This section contains lists of open and resolved caveats and known behaviors.
Open Caveats
Table 4 lists the open caveats in the Cisco NX-OS Release 11.1(1j). Click the bug ID to access the Bug Search tool and see additional information about the bug.
Table 4. Open Caveats in Cisco NX-OS Release 11.1(1j)
| Bug ID | Description |
| FEX logs are missing in the output of the show fex detail command. | |
| The SVI interface does not go down when all SVI ports are down. | |
| The events and faults for interfaces are not updated under Ports in the GUI. | |
| The output of some CLI commands display very slowly. | |
| Because ibash is implemented on top of bash, when using ibash for the CLI, the bash behavior is inherited. For example, the sh mod command works in traditional Cisco switches. But when executed on N9K switches in ibash, because bash interprets sh differently, sh mod will not work. Similarly, if there is a clash in the next available options, the TAB key must be pressed twice to get the options rather than once as in other Cisco switches. In short, the CLI infra for ibash is not exactly the same as the CLI infra for the traditional Cisco switches because N9K ibash is built on top of bash. | |
| FEX related diagnostic results are missing. | |
| The REST API on the CLI of the switch throws an error when trying to reload. | |
| When CDP and LLDP are enabled on an interface, learning of the CDP/LLDP neighbor link MACs is disabled in all VLANs. Because of this, data traffic cannot be forwarded to those link MACs of the neighbor. |
Resolved Caveats
Table 5 lists the resolved caveats in the Cisco NX-OS Release 11.1(1j). Click a Bug ID to access the Bug Search Tool and see additional information about the bug.
Table 5. Resolved Caveats in Cisco NX-OS Release 11.1(1j)
| Bug ID | Description |
| iping picks a source address from a different subnet for a directly connected destination. | |
| The Logical Interface Profile configuration for SVI does not require the user to enter a subnet mask. | |
| The command show endpoint vrf all does not provide a summary of all the VRFs. | |
| When removing the secondary IP on an external SVI interface, static routes defined in the VRF, or context of the SVI, are removed causing traffic to be looped in the fabric. | |
| FEX support is not available when connected behind a N9K-C9332PQ ToR. | |
| When a traceroute is performed from a VM attached to a regular bridge domain and to a VM behind a border leaf, and both of these VMs are behind two different ToRs, the traceroute does not show the ToR with the border leaf. | |
| In the N9K-9516 chassis, if multiple line cards and fabric cards are reloaded together, one or more cards might enter a failed state. Workaround: Recover the cards by reloading the spine or reloading each card. | |
| The installer can fail if one of the partitions on the switch is full. |
Known Behaviors
Table 6 lists caveats that describe known behaviors in the Cisco NX-OS Release 11.1(1j). Click the Bug ID to access the Bug Search Tool and see additional information about the bug.
Table 6. Known Behaviors in Cisco NX-OS Release 11.1(1j)
| Bug ID | Description |
| Configuring the BGP maximum prefix policy is not supported. | |
| When configuring the output span on a FEX Hif interface, all the layer 3 switched packets going out of that FEX Hif interface are not spanned. Only layer 2 switched packets going out of that FEX Hif are spanned. | |
| When output span is enabled on a port where the filter is VLAN, multicast traffic in the VLAN that goes out of that port is not spanned. | |
| The show interface command shows the tunnel's Rx/Tx counters as 0. | |
| The show vpc brief command displays the wire-encap VLAN Ids and the show interface .. trunk command displays the internal/hardware VLAN Ids. Both VLAN Ids are allocated and used differently, so there is no correlation between them. | |
| Continuous “threshold exceeded” messages are generated from the fabric. | |
| Switch rescue user ("admin") can log into fabric switches even when TACACS is selected as the default login realm. | |
| An extra 4 bytes is added to the untagged packet with Egress local and remote SPAN. | |
| When the command show ip ospf vrf <vrf_name> is run from bash on the border leaf, the checksum field in the output always shows a zero value. | |
| When an IP moves from one MAC behind one ToR to another MAC behind another ToR, even though the VM sends a GARP packet, in ARP unicast mode, this GARP packet is not flooded. As a result, any other host with the original MAC to IP binding sending an L2 packet will send to the original ToR where the IP was in the beginning (based on MAC lookup), and the packet will be sent out on the old port (location). Without flooding the GARP packet in the network, all hosts will not update the MAC-to-IP binding. | |
| When modifying the L2Unknown Unicast parameter on a Bridge Domain (BD), interfaces on externally connected devices may bounce. Additionally, the endpoint cache for the BD is flushed and all endpoints will have to be re-learned. | |
| If an endpoint has multiple IPs, the endpoint will not be aged until all IPs go silent. If one of the IPs is reassigned to another server/host, the fabric detects it as an IP move and forwarding will work as expected. | |
| The PSU is not getting detected after OIR with Power input connected. | |
| iping picks a source address from a different subnet for a directly connected destination. | |
| The port-channel remains in the admin-down state after being enabled. | |
| The access-port operational status is trunk. | |
| When removing the secondary IP on an external SVI interface, static routes defined in the VRF, or context of the SVI, are removed causing traffic to be looped in the fabric. | |
| An MSTP topology change notification (TCN) on a flood domain (FD) VLAN may not flush endpoints learned as remote where the FD is not deployed. | |
| The output incorrectly displays AOC cables as ACU cables. | |
| Any TCAM that is full, or nearly full, will raise the usage threshold fault. Because the faults for all TCAMs on leaf switches are grouped together, the fault will appear even on those with low usage. Workaround: Review the leaf switch scale and reduce the TCAM usage. Contact TAC to isolate further which TCAM is full. | |
| The default route is not leaked by BGP when the scope is set to context. The scope should be set to Outside for default route leaking. | |
| If the TOR 1RU system is configured with the RED fan (the reverse airflow), the air will flow from back to front. The temperature sensor in the back will be defined as an Inlet temperature sensor, and the temperature sensor in the front will be defined as an outlet temperature sensor. If the TOR 1RU system is configured with the BLUE fan (normal airflow), the air will flow from front to back. The temperature sensor in the front will be defined as an Inlet temperature sensor, and the temperature sensor in the back will be defined as outlet temperature sensor. From the airflow perspective, the Inlet sensor reading should always be less than the outlet sensor reading. However, in the TOR 1RU family, the front panel temperature sensor has some inaccurate readings due to the front panel utilization & configuration, which causes the Inlet temperature sensor reading to be very close, equal, or even greater than the outlet temperature reading. | |
| 10% to 11% traffic drops occur on Unicast Traffic Streams. | |
| Coop will not support IPv6 until all switches upgrade to 1.1(1j). | |
| If Backbone and NSSA areas are on the same leaf, and default route leak is enabled, Type-5 LSAs may not be redistributed to the Backbone area. | |
| Traffic from the orphan port to the vPC pair is not recorded against the tunnel stats. Traffic from the vPC pair to the orphan port is recorded against the tunnel stats. | |
| Traffic from the orphan port to the vPC pair is only updated on the destination node, so the traffic count shows as excess. | |
| If a BD "Multi Destination Flood" mode is configured as "Drop", the ISIS PDU from the tenant space will get dropped in the fabric. |
■ The following properties within a QoS class under “Global QoS Class policies,” should not be changed from its default value and is only used for debugging purposes:
— MTU (default – 9216 bytes)
— Queue Control Method (default – Dynamic)
— Queue Limit (default – 1522 bytes)
— Minimum Buffers (default – 0)
■ The Cisco Nexus 9508 ACI-mode switch supports warm (stateless) standby where the state is not synched between the active and the standby supervisor modules. For an online insertion and removal (OIR) or reload of the active supervisor module, the standby supervisor module becomes active, but all modules in the switch are reset because the switchover is stateless. In the output of the show system redundancy status command, warm standby indicates stateless mode.
■ When a recommissioned APIC controller rejoins the cluster, GUI and CLI commands can time out while the cluster expands to include the recommissioned APIC controller.
■ If connectivity to the APIC cluster is lost while a switch is being decommissioned, the decommissioned switch may not complete a clean reboot. In this case, the fabric administrator should manually complete a clean reboot of the decommissioned switch.
■ Before expanding the APIC cluster with a recommissioned controller, remove any decommissioned switches from the fabric by powering down and disconnecting them. Doing so will ensure that the recommissioned APIC controller will not attempt to discover and recommission the switch.
IGMP Snooping Known Behaviors:
■ Multicast router functionality is not supported when IGMP queries are received with VxLAN encapsulation.
■ IGMP Querier election across multiple Endpoint Groups (EPGs) or Layer 2 outsides (External Bridged Network) in a given Bridge Domain (BD) is not supported. Only one EPG or Layer 2 outside for a given BD should be extended to multiple multicast routers if any.
■ The rate of the number of IGMP reports sent to a leaf switch should be limited to 1000 reports per second.
■ Unknown IP multicast packets are flooded on ingress leaf switches and border leaf switches, unless “unknown multicast flooding” is set to “Optimized Flood” in a BD. This knob can be set to “Optimized Flood” only for a maximum of 50 BDs per leaf.
If “Optimized Flood” is enabled for more than the supported number of BDs on a leaf, follow these configuration steps to recover:
— Set “unknown multicast flooding” to “Flood” for all BDs mapped to a leaf.
— Set “unknown multicast flooding” to “Optimized Flood” on needed BDs.
Related Documentation
The Cisco Application Policy Infrastructure Controller (APIC) documentation can be accessed from this website:
New Documentation
This section lists the new Cisco APIC product documents for this release.
■ ACI Virtualization Guide
■ Developing L4-L7 Device Packages, Release 1.1(1j)
■ Deploying L4-L7 Services, Release 1.1(1j)
■ Nexus 9516 ACI-Mode Switch Hardware Installation Guide
■ Verified Scalability Guide for Cisco ACI, Release 1.1(1j) and Cisco Nexus 9000 Series ACI-Mode Switches, Release 11.1(1j)
■ KB: Configuring EIGRP
■ KB: Configuring IPv6 Neighbor Discovery
■ KB: Configuring BGP External Routed Network in APIC
■ KB: Configuring Layer 3 Outside for Tenant Network
■ KB: Configuring Route Control Protocol Using Import and Export Controls
■ KB: Creating Domains, Attach Entity Profiles, and VLANs to Deploy an EPG on a Specific Port
■ KB: Transit Routing
■ Video: Configuring EIGRP Using the GUI
■ Video: Configuring Microsegmentation with Cisco AVS Using VM-Based Attributes
■ Video: Creating the Tenant, Private Network, and Bridge Domain with IPv6 Neighbor Discovery Using the GUI
■ Video: Installing Cisco AVS with Cisco VSUM (Part 1: Configuring APIC Settings Before the Installation)
■ Video: Installing Cisco AVS with Cisco VSUM (Part 2: Installing Cisco AVS and Verifying the Installation)
■ Video: SCVMM Creating a Tenant
■ Video: SCVMM Creating an EPG
■ Video: SCVMM Associating the EPGs with Microsoft VMM Domain
■ Video: SCVMM Creating SCVMM Domain Profile
■ Video: SCVMM Creating SCVMM Domain Profile
■ Workflow: Cisco ACI with Microsoft SCVMM
■ Workflow: Cisco ACI with Microsoft Windows Azure Pack
■ Open Source Used In APIC 1.1(1)
This document is to be used in conjunction with the documents listed in the “Related Documentation” section.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.
© 2015-2016 Cisco Systems, Inc. All rights reserved.
FeedbackContact Cisco
- Open a Support Case
- (Requires a Cisco Service Contract)