This document describes the features, caveats, and limitations for Cisco NX-OS Release 7.0(3)F3(3) software for use on the Cisco Nexus 9508 switch with N9K-X9636C-R, N9K-X9636C-RX, and N9K-X9636Q-R line cards, and N9K-C9508-FM-R fabric modules. Use this document in combination with documents listed in Related Documentation.
NOTE: Cisco NX-OS Release 7.0(3)F3(3) cannot be used with other Cisco Nexus 9000 Series switches or with a Cisco Nexus 9508 switch that does not contain N9K-X9636C-R or N9K-X9636Q-R line cards or N9K-C9508-FM-R fabric modules.
Table 1 shows the online change history for this document.
Table 1. Online History Change
Date |
Description |
April 23, 2019 |
Updated Supported Optics links. |
April 20, 2018 |
Modified Open Caveats and Limitations. |
November 16, 2017 |
Created the release notes for Release 7.0(3)F3(3). |
Table of Contents
New Hardware Features in Cisco NX-OS Release 7.0(3)F3(3)
New Software Features in Cisco NX-OS Release 7.0(3)F3(3)
Resolved Caveats—Cisco NX-OS Release 7.0(3)F3(3)
Open Caveats—Cisco NX-OS Release 7.0(3)F3(3)
Obtaining Documentation and Submitting a Service Request
■
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.
This section includes the following sections:
Table 2 lists the Cisco Nexus 9508 switch hardware that Cisco NX-OS Release 7.0(3)F3(3) supports. For additional information about the supported hardware, see the Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide.
Table 2. Cisco Nexus 9508 Switch Hardware
Product ID |
Hardware |
Quantity |
N9K-C9508 |
Cisco Nexus 9508 8-slot chassis The N95-LAN-XL1K9 licensing agreement is required. |
1 |
N9K-X9636C-R |
36-port 100-Gigabit Ethernet QSFP28 line card supporting 1 x 100 and 1 x 40 Gigabit Ethernet |
Up to 8 (can mix with N9K-X9636Q-R & N9K-X9636C-RX) |
N9K-X9636C-RX |
36-port 100-Gigabit line card. QSFP28 line card supporting 36 x 100 and 36 x 40 Gigabit Ethernet with External TCAM |
Up to 8 (can mix with N9K-X9636Q-R/ N9K-X9636Q-R) |
N9K-X9636Q-R |
36-port 40-Gigabit Ethernet QSFP+ line card supporting 1 x 40 Gigabit Ethernet |
Up to 8 (can mix with N9K-X9636C-R/N9K-X9636C-RX) |
N9K-C9508-FM-R |
Cisco Nexus 9508 Series fabric module |
6 (5 plus 1 for redundancy) |
N9K-C9508-FAN |
Cisco Nexus 9508 fan trays |
3 |
N9K-SC-A |
Cisco Nexus 9500 Series System Controller Module |
2 |
N9K-SUP-B |
Cisco Nexus 9500 Series supervisor B module |
2 |
N9K-PAC-3000W-B |
Cisco Nexus 9500 Series 3000 W AC power supply |
Up to 8 |
To determine which transceivers and cables are supported by this switch, see the Transceiver Module (TMG) Compatibility Matrix.
To see the transceiver specifications and installation information, see https://www.cisco.com/c/en/us/support/interfaces-modules/transceiver-modules/products-installation-guides-list.html.
This section lists the following topics:
■ New Hardware Features in Cisco NX-OS Release 7.0(3)F3(3)
■ New Software Features in Cisco NX-OS Release 7.0(3)F3(3)
Cisco NX-OS Release 7.0(3)F3(3) does not include new hardware features.
Cisco NX-OS Release 7.0(3)F3(3) supports the following software features for Cisco Nexus 9000 Series switches.
Label Switching Features
■ BGP VPNv4 Multipath—BGP VPNv4 Multipath feature to achieve Equal Cost Multi-Path (ECMP) for traffic flowing from an Autonomous System Border Router (ASBR) towards the Provider Edge (PE) device in a Multi-Protocol Label Switching (MPLS) cloud network by using a lower number of prefixes and MPLS labels. This feature configures the maximum number of multipaths for both eBGP and iBGP paths. This feature can be configured on PE devices and Route Reflectors in an MPLS topology.
■ MPLS L3 VPN— MPLS-based Layer 3 VPNs are based on a peer model that enables the provider and the customer to exchange Layer 3 routing information. MPLS Layer 3 VPN consists of a set of sites that are interconnected by an MPLS provider core network. At each customer site, one or more customer edge (CE) routers or Layer 2 switches attach to one or more provider edge (PE) routers. § RFC 3107 Inter AS
■ Option-B— The InterAS option B (with RFC 3107) implementation ensures complete IGP isolation between the data centers and WAN. When BGP advertises a particular route to ASBR, it also distributes the label which is mapped to that route.
For more information, see the Cisco Nexus 9000 Series NX-OS Label Switching Configuration Guide, Release 7.x.
Quality of Service Features
■ Shared Policer—Allows you to apply the same QoS policing parameters to several interfaces simultaneously.
■ Updated commands—show icam resource and show icam prediction resource command with fib_tcam and l2_table parameters.
■ VLAN QoS—Enables Layer 2 bridged database lookup for QoS with VLAN as the key instead of the port.
For more information, see the Cisco Nexus 9000 Series Quality of Service Configuration Guide, Release 7.x.
System Management Feature
■ PTP – Added support for AES67 and SMPTE 2059-2 PTP profiles
For more information, see the Cisco Nexus 9000 Series NX-OS System Management Configuration Guide, Release 7.x
Unicast Routing Features
■ Added the ability to configure an HSRP subnet virtual IP address (VIP) and a different subnet than that of the SVI SVI IP address. This feature enables you to conserve public IPv4 addresses by using a VIP as a public IP address and an interface IP as a private IP address.
■ Policy-based routing (PBR) – Configures a defined policy for IPv4 and IPv6 traffic flows that lessens the reliance on routes derived from routing protocols. All packets received on an interface with PBR enabled are passed through enhanced packet filters or route maps. The route maps dictate the policy that determines where to forward packets.
■ vPC uRPF—Updated Guidelines and Limitations.
For more information, see the Cisco Nexus 9000 Series NX-OS Unicast Routing Configuration Guide, Release 7.x.
VXLAN Features
■ VXLAN Layer 2 Gateway
o ARP Suppression—Added support for ARP suppression.
o IPv6—Added support for IPv6 in the overlay.
o PIM-ASM—Added support for Protocol Independent Multicast (PIM) and Any Source Multicast (ASM).
o VXLAN and MPLS—Added CLI commands to configure all or individual line cards.
For more information, see the Cisco Nexus 9000 Series NX-OS VXLAN Configuration Guide, Release 7.x.
This section includes the following topics:
■ Resolved Caveats—Cisco NX-OS Release 7.0(3)F3(3)
■ Open Caveats—Cisco NX-OS Release 7.0(3)F3(3)
Bug ID |
Description |
N36180YC-R QSFP-4X10G-LR4-S link may show as not connected after OIR |
|
Broken VRF Due to RD Change in BG |
The following table lists the open caveats in Cisco NX-OS Release 7.0(3)F3(3). Click the bug ID to access the Bug Search tool and see additional information about the bug.
Bug ID |
Description |
Queue-limit Sum more than 100% |
|
breakout priority drops when 3 streams comes from same soc under oversubscription |
|
N9K-X9636C-RX:: L2 SSM look up failure affecting IGMPv3 functionality |
|
port range not working properly |
|
L2GW : Outer IP TOS value to set as 0x00 |
|
"OutBcastPkts" counter not working |
|
MPLS IAS LDP control packets need to be prioritized using COPP policy |
|
packet is flooded to the port which has no receiver |
|
N36180YC-R QSFP-4X10G-LR4-S link may show as not connected after OIR
|
|
Unshut of One of the ECMP links causes 1 minute + traffic drop due to high CPU for u6rib |
|
Sflow doubles the packet count when egress sampling is done |
|
vpc secondary comes back up as oper primary after reload |
|
QoS with "match protocol apr" on L3/SVI returning 'Failed to add acl in hardware' |
|
PTP process restart and system switchover accumulates high corrections for few seconds. |
|
NVE shut/no shut takes long time for traffic to converge around 5-6 mins |
|
All interfaces are missing from running-config after LC reload |
|
ERSPAN packet drops on L3 link due to incorrect header format |
|
LDP neighborship goes down after switchover |
|
Terminal unresponsive for approx 5 mins if vpc PL is shut on vpc secondary |
|
Need to detect if ILKN links for TCAM are up after boot and prevent LC online if links not up |
This section lists limitations related to Cisco NX-OS Release 7.0(3)F3(3).
■ A QoS policy having a MAC-based access list as a match in the class map does not work for IPv6 traffic. IPv6 traffic needs to be matched based on the IPv6 addresses and not the MAC address for QoS. For more information, see CSCvg21532.
■ CoPP (Control Plane Policing) cannot be disabled. If you attempt to disable it, an error message appears. For more information, see CSCvi09329.
■ The 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. For more information, see CSCvc44819.
■ IPv4 traffic might drop when only IPv6 uRPF is enabled on the interface. For more information, see CSCvh99632.
The entire Cisco Nexus 9000 Series NX-OS documentation set is available at the following URL:
The Cisco Nexus 9508 NX-OS Mode Switch Hardware Installation Guide is available at the following URL:
The NX-API DME Model Documentation is available at the following URL:
https://developer.cisco.com/media/dme/index.html
The Cisco Nexus 9000 Series NX-OS Programmability Guide, Release 7.x is available at the following URL:
The Cisco Nexus 9000 Series NX-OS IP Fabric for Media Release Notes, Release 7.0(3)F3(3) is available at the following URL:
The Cisco Nexus 9000 Series NX-OS IP Fabric for Media Solution Guide is available at the following URL:
The Cisco Nexus 3000 and 9000 Series NX-API REST SDK User Guide and API Reference is available at the following URL:
https://developer.cisco.com/site/nx-os/docs/n3k-n9k-api-ref/
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/epld_rn/guide/nxos_epldRN_703F33.html
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Cisco Nexus 9000 Series NX-OS Release Notes, Release 7.0(3)F3(3)
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