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Updated:November 21, 2013
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Cisco Nexus 9000 Series NX-OS Release Notes, Release 6.1(2)I1(1)
Date: November 21, 2013 Part Number: OL-30668-01 Current Release: Release 6.1(2)I1(1)
This document describes the features, caveats, and limitations for Cisco NX-OS Release 6.1(2)I1(1) software for use on the Cisco Nexus 9000 Series switches. Use this document in combination with documents listed in the Related Documentation.
Table 1 shows the online change history for this document.
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.
– 802.3ad Link Aggregation Control Protocol (LACP)
Unidirectional Link Detection (UDLD)
Device Management Capabilities
PowerOn Auto Provisioning (PoAP)
Configuration session manager
Network Time Protocol (NTP)
– Client, peer, server, ACL, and authentication
Smart Call Home
SNMP v1, v2, v3
XML (Network Configuration Protocol [NETCONF])
SSHv2 (client, server)
Telnet (client, server)
100/1000 Management port
RS-232 Serial Console port
– Locator LED (Beacon) for line cards (chassis)
Extensibility and Programming Tools
– BASH Shell access
BCM Shell access
Ingress/egress ACLs using Layer 3, Layer 4 fields
Authentication, authorization, and accounting (AAA)
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.
Cisco NX-OS Release 6.1(2)I1(1) does not support the following features:
The Generic Online Diagnostics (GOLD) port loopback test
An ERSPAN type destination
An egress filter on an ACL-based SPAN
All VLAN features of SPAN/ERSPAN
Cisco NX-OS Release 6.1(2)I2(2b) supports flooding for Microsoft Network Load Balancing (NLB) unicast mode on Cisco Nexus 9500 Series switches but not on Cisco Nexus 9300 Series switches. NLB is not supported in max-host system routing mode. NLB multicast mode is not supported on Cisco Nexus 9500 or 9300 Series switches.
Note To workaround 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 6.1” section.
The following features are not enabled in this release:
– Layer 2 and vPC
– FabricPath and OTV
– Fiber Channel
– Fiber Channel over Ethernet (FCoE)
When routed ACL is applied to multiple SVIs (switched virtual interfaces) in the egress direction, TCAM resources are not shared.
When VACL (VLAN ACL) is applied to multiple VLANs, TCAM resources are not shared.
N9K 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.
If the same QOS policy and ACL is applied on multiple interfaces, the label will be shared only when the qos-policy is applied with the no-stats option.
Limitations for ALE uplink ports are listed at the following URL:
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 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
Other Software Documents
Cisco NX-OS Licensing 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 NX-OS System Messages Reference
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide
Cisco NX-OS XML Interface User Guide
Cisco Nexus 9508 Switch Site Preparation and Hardware Installation Guide
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Cisco Nexus 9000 Series NX-OS Release Notes, Release 6.1(2)I1(1)