Cisco Nexus 9000 Series NX-OS Release Notes, Release 7.0(3)I1(1)
New Hardware Features in Cisco NX-OS Release 7.0(3)I1(1)
New Software Features in Cisco NX-OS Release 7.0(3)I1(1)
Open Caveats—Cisco NX-OS Release 7.0(3)I1(1)
Resolved Caveats—Cisco NX-OS Release 7.0(3)I1(1)
Obtaining Documentation and Submitting a Service Request
Publication Date: January 31, 2015
Current Release: Release 7.0(3)I1(1)
This document describes the features, caveats, and limitations for Cisco NX-OS Release 7.0(3)I1(1) software for use on the Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch. Use this document in combination with documents listed in Related Documentation.
Table 1 shows the online change history for this document.
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Added a new line to explain a Cisco ALE port limitation in the “Limitations” section. |
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Updated “VXLAN” with information about the DHCP relay feature. |
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Added new limitations in “Limitations”. |
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Added link to ALE port limitations in “Limitations”. |
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.
This section includes the following topics:
Table 2 lists the Cisco Nexus 9000 Series hardware that Cisco NX-OS Release 7.0(3)I1(1) supports.
Cisco Nexus 9500 Series 48-port, 1-/10-Gbps SFP+ plus 4-port QSFP I/O module |
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Cisco Nexus 9500 Series 48-port, 1-/10-Gbps BASE-T plus 4-port QSFP I/O module |
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Cisco Nexus 9500 36-port, 40 Gigabit Ethernet QSFP aggregation module |
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N9K-X9636PQ1 |
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Cisco Nexus 9500 Series 48-port 10-Gigabit SFP+ plus 4-port QSFP I/O module |
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Cisco Nexus 9500 Series 48-port 10-GBASE-T plus 4-port QSFP I/O module |
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Cisco Nexus 9300 48-port, 1/10-Gigabit Ethernet SFP+ and 12-port, 40-Gigabit Ethernet QSPF switch |
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Cisco Nexus 9300 48-port, 1/10-Gigabit Ethernet BASE-T and 12-port, 40-Gigabit Ethernet QSFP switch |
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Cisco Nexus 9300 48-port, 1/10-Gigabit Ethernet SFP+ and 6-port, 40-Gigabit Ethernet QSFP switch |
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Cisco Nexus 9300 48-port, 1/10-Gigabit Ethernet BASE-T and 6-port, 40-Gigabit Ethernet QSFP switch |
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Cisco Nexus 9300 switch with 96 1-/10-Gigabit BASE-T ports and eight 40-Gigabit Ethernet QSPF ports (The 1-/10-Gigabit BASE-T ports also support a speed of 100 Megabits.) |
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N9K-PAC-650W2 |
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N9K-PAC-1200W3 |
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NXA-FAN-30CFM-F4 |
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N9K-M12PQ5 |
Cisco Nexus GEM 9300 uplink module, 12-port, 40-Gigabit Ethernet QSPF |
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Cisco Nexus GEM 6-port 40-Gigabit Ethernet uplink module for the Cisco Nexus 9396PX, 9396TX, and 93128TX switches |
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 3164Q switch hardware that Cisco NX-OS Release 7.0(3)I1(1) supports.
For additional information about the supported hardware, see the Cisco Nexus 3000 Series Hardware Installation Guide.
Table 4 lists the supported optical components. For updated support information, also see the Compatibility Matrix.
This section lists the new and changed features in Release 7.0(3)I1(1), and includes the following topics:
Cisco NX-OS Release 7.0(3)I1(1) supports the following new hardware features:
Cisco NX-OS Release 7.0(3)I1(1) includes the new software features described in these sections for the Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch:
– 10G dynamic breakout support - A port can have 10G or 40G bandwidth. Ports that have a 40G or higher bandwidth are considered high bandwidth ports (HBP). The dynamic breakout feature enables you to split any HBP into multiple 10G ports (breakout ports).
Dynamic breakout is supported only on the following:
- X9636PQ, X9432PQ, and X9536PQ line cards on a Cisco Nexus 9500 Series switch
- Cisco Nexus 9332PQ switch (all ports except 13-14 and 27-32 can support breakout) and the Cisco Nexus 3164Q switch
– Symmetric hashing - Symmetric hashing on a port channel ensures that bidirectional traffic uses the same physical interface to effectively monitor traffic on the port channel.
– Tunnel statistics - Provides statistics for an IP tunnel interface. Please note the following caveats for this feature:
- Only IPv4 Unicast forwarding is supported
- No additional features (ACL/QOS/PBR) are supported on tunnel interface
- Tunnel is only supported in Default routing mode
- No PMTU support on tunnel interface
– IPv6 for BFD - Provides IPv6 support for Bidirectional Forwarding Detection (BFD) to enable BGPv6, EIGRPv6, OSPFv3, and IS-ISv6 protocols for BFD.
– Multicast multipath enhancement – Added the ability to use the existing reverse path forwarding (RPF) information instead of performing a rehash if a change occurs in the equal-cost multi-path (ECMP) path list. For additional information, see the Cisco Nexus 9000 Series NX-OS Multicast Routing Configuration Guide.
– Egress QoS policy - Support for packet Marking and Policing in the egress direction. Interface policy-map statistics are enhanced to support output direction.
– DHCP snooping – Acts like a firewall between untrusted hosts and trusted DHCP servers. DHCP snooping can resolve some types of denial-of-service (DOS) attacks that can be engineered by DHCP messages.
– Dynamic ARP inspection (DAI) – Determines the validity of an ARP packet based on valid IP-to-MAC address bindings stored in a DHCP snooping binding database and ensures that only valid ARP requests and responses are relayed.
– IP source guard (IPSG) – A per-interface traffic filter that permits IP traffic only when the IP address and MAC address of each packet match one of two sources of IP and MAC address bindings: entries in the DHCP snooping binding table or static IP source entries that you configure.
For additional information, see the Cisco Nexus 9000 Series NX-OS Security Configuration Guide.
– 1588 timestamping in ERSPAN Type III packets – PTP’s timestamping feature provides timestamp information in the ERSPAN Type III header that can be used to calculate packet latency among edge, aggregate, and core switches.
– TAP aggregation – Allows the aggregation of multiple test access points (TAPs) to help with monitoring and troubleshooting tasks in the data center. Tap aggregation switches link all of the monitoring devices to specific points in the network fabric that handle the packets that need to be observed.
– Precision Time Protocol (PTP) – A time synchronization protocol defined in IEEE 1588 for nodes distributed across a network. It specifies how real-time clocks in the system synchronize with each other.
Note Only these devices support PTP: Cisco Nexus 9332PQ switch (the last 6 physical ports do not support PTP), Cisco Nexus 9396PX switch (all 40G physical ports do not support PTP), Cisco Nexus 9504 or 9508 switch with an X9636PQ line card, and Cisco Nexus 3164Q switch.
For additional information, see the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide.
– EIGRP NSF enhancement – Makes EIGRP wait for the convergence of redistributed protocols being tracked before installing its own routes in the Routing Information Base (RIB) during nonstop forwarding (NSF).
– IPv6 for BFD – Provides IPv6 support for Bidirectional Forwarding Detection (BFD) for the BGP, EIGRP, OSPFv3, and IS-IS Layer 3 routing protocols.
– Max L3 LPM routing mode – You can configure LPM mode 4 on Cisco Nexus 9300 Series switches in order to support significantly more LPM routes, specifically 128,000 IPv4 routes and 20,000 IPv6 routes.
– VRRPv3 – VRRP version 3 enables a group of switches to form a single virtual switch in order to provide redundancy and reduce the possibility of a single point of failure in a network.
For additional information, see the Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide.
– VXLAN MIB/counters - VXLAN MIB - CISCO-NETWORK-VIRTUALIZATION-OVERLAY-MIB provides SNMP access to manage the configuration, status, and statistics information of the virtual network overlay feature.
– VXLAN bud node - Support for bud-node topology on Cisco 9300 VTEP devices.
Note A bud node is a device that is a VXLAN VTEP device, and at the same time, an IP transit device for the same VXLAN VNIs.
– VXLAN ingress replication - Provides support to replicate multi-destination packets (broadcast, unknown unicast, or multicast packets) to statically defined peers, uses VxLAN unicast, and eliminates the need of a multicast core.
– VXLAN eVPN - Supports a BGP ethernet VPN (EVPN) control plane.
– VXLAN anycast gateway with eVPN - Provides anycast gateway addressing and an overlay network to enable a distributed control plane.
– ARP suppression - Provides suppression of ARP packets, which prevents flooding of ARPs in the core.
Only one software image (called nx-os) is required to load the Cisco NX-OS operating system. This image runs on all Cisco Nexus 9000 Series switches and the Cisco Nexus 3164Q switch. For installation instructions, see the Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide.
To perform a software upgrade, follow the installation instructions in the Cisco Nexus 9000 Series NX-OS Software Upgrade and Downgrade Guide.
Disable the Guest Shell if you need to downgrade from Cisco NX-OS Release 7.0(3)I1(1) to an earlier release.
For information about software maintenance upgrades, see the “Performing Software Maintenance Upgrades” section in the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide.
Note If you perform a software maintenance upgrade (SMU) and later upgrade your device to a new Cisco NX-OS software release, the new image will overwrite both the previous Cisco NX-OS release and the SMU package file.
This section lists limitations related to Cisco NX-OS Release 7.0(3)I1(1).
– 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).
– The source interface support for traceroute feature.
– The Cisco NX-OS to ACI conversion feature with the ability to boot the ACI image from Cisco NX-OS mode instead of from the loader> prompt.
– The port-channel subinterface feature is not supported.
Note To work around the situation of Unicast NLB limitation, we can statically hard code the ARP and MAC address pointing to the correct interface. Please refer to bug ID CSCuq03168 in detail in the “Open Caveats—Cisco NX-OS Release 7.0(3)I1(1)” section.
– Routed ACL is applied to multiple SVIs (switched virtual interfaces) in the egress direction.
– Applying VACL (VLAN ACL) to multiple VLANs.
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
This section lists features that are not supported in the current release.
This section lists VXLAN features that are not supported.
The following ACL related features are not supported:
We recommend that you use a PACL or VACL on the access side to filter out traffic entering the overlay network.
The following lists other features not supported in the current release:
– The last 6 40G physical ports on the 9372PX, 9372TX, and 9332PQ switches
– All 40G physical ports on the 9396PX, 9396TX, and 93128TX switches
This section includes the following topics:
Table 5 lists the open caveats in the Cisco NX-OS Release 7.0(3)I1(1) release. Click the bug ID to access the Bug Search tool and see additional information about the bug.
Table 6 lists the resolved caveats in the Cisco NX-OS Release 7.0(3)I1(1) release. Click the bug ID to access the Bug Search tool and see additional information about the bug.
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
Cisco Nexus 2000 Series NX-OS Fabric Extender Software Configuration Guide for Cisco Nexus 9000 Series Switches
Cisco Nexus 9000 Series NX-OS Fundamentals Configuration Guide
Cisco Nexus 9000 Series NX-OS High Availability and Redundancy Guide
Cisco Nexus 9000 Series NX-OS Interfaces Configuration Guide
Cisco Nexus 9000 Series NX-OS Layer 2 Switching Configuration Guide
Cisco Nexus 9000 Series NX-OS Multicast Routing Configuration Guide
Cisco Nexus 9000 Series NX-OS Quality of Service Configuration Guide
Cisco Nexus 9000 Series NX-OS Security Configuration Guide
Cisco Nexus 9000 Series NX-OS System Management Configuration Guide
Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide
Cisco Nexus 9000 Series NX-OS Verified Scalability Guide
Cisco Nexus 9000 Series NX-OS Virtual Machine Tracker Configuration Guide
Cisco Nexus 7000 Series and 9000 Series NX-OS MIB Quick Reference
Cisco Nexus 9000 Series NX-OS Programmability Guide
Cisco Nexus 9000 Series Software Upgrade and Downgrade Guide
Cisco Nexus 9000 Series NX-OS System Messages Reference
Cisco Nexus 9332PQ NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9372PX NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9372TX NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9396PX NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9396TX NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 93128TX NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9504 NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9508 NX-OS-Mode Switch Hardware Installation Guide
Cisco Nexus 9516 NX-OS-Mode Switch Hardware Installation Guide
For information on obtaining documentation and gathering additional information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
Open a service request online at:
https://tools.cisco.com/ServiceRequestTool/create/launch.do
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