Migrating from Nexus 7000 to 9000
Migrating from Nexus 7000 to 9000 28
May

Migrating from Nexus 7000 to 9000

Introduction

In the world of computer networks, upgrading from old to new technology is like getting a shiny new tool to make things better. Imagine you have an old, reliable car, but it's starting to show it's age. You hear about a newer model that's faster, safer, and more efficient. Cisco is a well-known company that offers efficient networking devices. That's what it's like when considering moving from Cisco Nexus 7000 to Nexus 9000 switches. This article is all about helping you understand why this upgrade might be a good idea. We'll explore what makes these newer switches different, why they're better, and how you can smoothly make the switch without causing chaos in your network. So, buckle up as we embark on this journey from the old to the new in the world of networking!

Differences between Cisco Catalyst and Cisco Nexus

Cisco Catalyst and Cisco Nexus are two prominent product lines within Cisco's networking portfolio, each catering to distinct use cases and requirements.

Cisco Catalyst

Primarily designed for campus and branch networks, Cisco Catalyst switches offer high performance, reliability, and scalability for traditional Ethernet-based deployments. They are well-suited for environments where simplicity, ease of management, and cost efficiency are paramount.

Cisco Nexus

On the other hand, Cisco Nexus switches are tailored for data center and cloud environments, delivering advanced features such as high-density 10/25/40/100 Gigabit Ethernet connectivity, low-latency switching, and support for virtualization and software-defined networking (SDN) technologies. They are optimized for demanding workloads and critical applications that require exceptional performance, flexibility, and scalability.

Overview of Nexus 7000 and Nexus 9000

Nexus 7000

The Cisco Nexus 7000 series switches represent a robust and scalable solution for data center networking. Known for their reliability and performance, Nexus 7000 switches offer high-density 10 Gigabit Ethernet and 40 Gigabit Ethernet ports, along with features such as Virtual Device Context (VDC) support and FabricPath technology for improved scalability and flexibility.

Nexus 9000

Building upon the success of its predecessor, the Cisco Nexus 9000 series switches introduce innovations in networking technology, including support for Cisco's Application Centric Infrastructure (ACI) and programmable ASICs for enhanced automation and agility. With features such as VXLAN encapsulation, network virtualization, and seamless integration with cloud platforms, Nexus 9000 switches empower organizations to build scalable and resilient data center networks that adapt to evolving business needs.

Understanding the Need for Migration

Advancements in Networking Technology

With the rapid evolution of networking technology, newer hardware often offers improved performance, enhanced features, and better support for modern applications and workloads.

End-of-Life and End-of-Support

As hardware reaches its end-of-life (EOL) and end-of-support (EOS) stages, enterprises face risks associated with security vulnerabilities, a lack of updates, and diminishing compatibility with newer software.

Key features of Nexus 7000 switches

Table 1 lists some key features of the Nexus 7000 switches below:

Feature

Description

High-Density Ports

Nexus 7000 switches offer high-density 10 Gigabit Ethernet and 40 Gigabit Ethernet ports, providing ample connectivity for data center environments.

Virtual Device Context (VDC)

VDC allows the segmentation of a single physical Nexus 7000 switch into multiple logical devices, enabling isolation and resource allocation for different applications or tenants.

FabricPath Technology

FabricPath is a scalable and resilient Layer 2 multipath Ethernet technology, designed to provide increased scalability, flexibility, and operational simplicity in data center networks.

Data Center Interconnect (DCI)

Nexus 7000 switches support DCI solutions, enabling seamless connectivity and workload mobility between data centers for disaster recovery, load balancing, and business continuity.

High Availability

Nexus 7000 switches feature redundant components, including power supplies, fans, and supervisor modules, to ensure high availability and minimize downtime in mission-critical environments.

Advanced Security Features

With features such as access control lists (ACLs), Virtual Routing and Forwarding (VRF), and port security, Nexus 7000 switches provide robust security capabilities to protect sensitive data and applications.

Scalability

Nexus 7000 switches are designed to scale seamlessly to meet the growing demands of modern data center environments, supporting thousands of ports and millions of forwarding entries.

Virtual Port Channel (vPC)

vPC technology allows the aggregation of multiple physical links between Nexus 7000 switches and downstream devices, providing increased bandwidth, redundancy, and load balancing.

Unified Fabric

Nexus 7000 switches support a unified fabric architecture, enabling convergence of storage, data, and management traffic over a single Ethernet-based infrastructure, simplifying network design and operations.


Key Features of Nexus 9000 Switch

Table 2 summarizes the key features that make Nexus 9000 switches a preferred choice for modern data center networking environments.

Feature

Description

High Port Density

Offers high-density 10/25/40/100 Gigabit Ethernet ports for increased scalability and bandwidth.

Advanced ASIC Technology

Utilizes programmable ASICs (Application-Specific Integrated Circuits) for enhanced performance, flexibility, and programmability.

Application Centric Infrastructure (ACI) Support

Provides seamless integration with Cisco's ACI architecture for policy-driven automation, management, and orchestration of network resources.

VXLAN Support

Supports Virtual Extensible LAN (VXLAN) encapsulation for network virtualization and overlay deployment, enabling efficient workload mobility and scalability.

Cloud Integration

Facilitates integration with leading cloud platforms such as AWS, Azure, and Google Cloud for seamless hybrid cloud deployments and workload mobility.

Enhanced Security

Offers advanced security features, including TrustSec, MACsec, and role-based access control (RBAC), to safeguard network assets and data.

Automation and Orchestration

Enables automation of provisioning, configuration, and management tasks through APIs (Application Programming Interfaces) and integration with orchestration platforms such as Ansible and Puppet.

Modular Architecture

Adopts a modular architecture with options for fixed and modular chassis designs, allowing flexibility in deployment and scalability.

Scalability

Provides scalable solutions for small to large-scale data center deployments, accommodating evolving business needs and growth.

Telemetry and Analytics

Offers built-in telemetry and analytics capabilities for real-time monitoring, troubleshooting, and optimization of network performance and resource utilization.


Key Differences Between Nexus 7000 and 9000

To facilitate an informed migration decision, let's delve into the primary variances between the Nexus 7000 and Nexus 9000 series switches:

Architecture

Feature

Nexus 7000

Nexus 9000

Switch Fabric

Fabric-1 and Fabric-2 Modules

Unified Fabric Module (NFM-P or NFM-T)

ASIC

M-series and F-series ASICs

Broadcom Trident and Tomahawk ASICs

Operating System

Cisco NX-OS

Cisco NX-OS or Cisco ACI (Application Centric

Specifications Comparison

Table 3 provides a quick overview of the key specifications of two models of Nexus 9000 switches: N9K-C93180YC-EX and N9K-C9372PX.

Specification

Nexus 9000 (N9K-C93180YC-EX)

Nexus 9000 (N9K-C9372PX)

Ports

48 x 10/25-Gbps SFP+

48 x 1/10-Gbps SFP+

 

6 x 40/100-Gbps QSFP28

6 x 40/100-Gbps QSFP+

Switching Capacity

3.6 Tbps

1.44 Tbps

Forwarding Rate

2.68 Bpps

1.44 Bpps

Packet Buffer

16 MB

9 MB

Latency

450 ns (10 Gbps)

500 ns (10 Gbps)

 

950 ns (40 Gbps)

1.5 µs (40 Gbps)

 

1.5 µs (100 Gbps)

2.3 µs (100 Gbps)

Form Factor

1 RU

1 RU

Power Supply

Dual redundant, hot-swappable

Dual redundant, hot-swappable

Maximum Power

500W

720W

Operating System

Cisco NX-OS or Cisco ACI

Cisco NX-OS or Cisco ACI

Software Features

VXLAN, EVPN, MPLS

VXLAN, EVPN, MPLS

 

BGP, OSPF, ISIS

BGP, OSPF, ISIS

 

ACL, QoS

ACL, QoS


Software Capabilities

Table 4 outlines the software capabilities of the Nexus 7000 and Nexus 9000 switches:

Software Capability

Nexus 7000

Nexus 9000

Operating System

Cisco NX-OS

Cisco NX-OS or Cisco ACI (Application Centric Infrastructure)

Virtualization Support

Virtual Device Context (VDC) support

VXLAN encapsulation

Automation

Limited automation features

Enhanced automation capabilities

Programmability

Limited programmability

Support for programmable ASICs

SDN Support

Limited support for software-defined networking (SDN)

Extensive support for SDN and Cisco ACI

Management

Cisco Prime Data Center Network Manager

Cisco Data Center Network Manager (DCNM)

Security Features

TrustSec, MACsec

Enhanced security features such as TrustSec and MACsec

Scalability

Scalable architecture with FabricPath technology

Improved scalability with support for ACI and VXLAN

Cloud Integration

Limited integration with cloud platforms

Seamless integration with cloud platforms


Performance

Table 5 provides a brief summary of the performance characteristics of the Nexus 7000 and Nexus 9000 switches, including switching capacity, port density, latency, packet buffer memory, VLAN and VXLAN support, fabric modules, and ASIC options.

Performance Feature

Nexus 7000

Nexus 9000

Switching Capacity

Up to 15 Tbps

Up to 50 Tbps

Maximum Ports

Up to 768 10 Gigabit Ethernet (GE) ports

Up to 2304 10 GE or 576 40 GE ports

Latency

Sub-microsecond

Sub-microsecond

Packet Buffer Memory

Up to 144 GB

Up to 144 GB

Maximum VLANs

Up to 4096

Up to 4096

Support for VXLAN

Limited support

Full support

Fabric Modules

Fabric-1, Fabric-2

NFM-P, NFM-T, NFM-O, NFM-E

ASIC

M-series, F-series

Trident, Tomahawk, Cloudscale, Innovium, and Jericho


Port Density

Table 6 outlines the highest port density between Nexus 700 and Nexus 9000:

Switch Model

Maximum Port Density

Nexus 7000

Up to 768 10 Gigabit Ethernet ports or 192 40 Gigabit Ethernet ports

Nexus 9000

Up to 2304 10/25 Gigabit Ethernet ports or 576 40/100 Gigabit Ethernet ports


Explanation of Higher Port Density

The Nexus 9000 series switches offer significantly higher port density compared to their predecessor, the Nexus 7000 series. This increase in port density is primarily attributed to advancements in networking technology and hardware architecture.

One key factor contributing to the higher port density in Nexus 9000 switches is the utilization of more compact and power-efficient ASICs (Application-Specific Integrated Circuits). These specialized chips are designed to handle the processing and forwarding of network traffic more efficiently, allowing for a greater number of ports to be accommodated within the switch chassis.

Furthermore, innovations in switch design and component integration have enabled Cisco to optimize the physical layout of Nexus 9000 switches, maximizing the available space for port interfaces while minimizing the overall footprint of the device. This streamlined design approach enhances scalability and flexibility, making Nexus 9000 switches ideal for high-density deployments in modern data center environments.

Bandwidth Specifications

Table 7 lists the bandwidth specifications of the Nexus 7000 and Nexus 9000 series switches:

Switch Model

Maximum Bandwidth per Slot (Gbps)

Maximum System Bandwidth (Tbps)

Fabric Module

Nexus 7000

Up to 550

Up to 17.6

Fabric-1, Fabric-2

Nexus 9000

Up to 3,840

Up to 60 (Nexus 9500)

NFM-P, NFM-T


Protocols

Table 8 provides a comparison of the common protocols supported by both Nexus 7k and Nexus 9k series switches. It's important to note that specific protocol support may vary depending on the software version and configuration of the switches.

Protocol

Nexus 7000

Nexus 9000

BGP (Border Gateway Protocol)

Supported

Supported

OSPF (Open Shortest Path First)

Supported

Supported

EIGRP (Enhanced Interior Gateway Routing Protocol)

Supported

Supported

ISIS (Intermediate System to Intermediate System)

Supported

Supported

RIP (Routing Information Protocol)

Supported

Supported

MPLS (Multiprotocol Label Switching)

Supported

Supported

VXLAN (Virtual Extensible LAN)

Supported

Supported

FabricPath

Supported

Not Supported

FCoE (Fibre Channel over Ethernet)

Supported

Supported

VRRP (Virtual Router Redundancy Protocol)

Supported

Supported

HSRP (Hot Standby Router Protocol)

Supported

Supported

GLBP (Gateway Load Balancing Protocol)

Supported

Supported

PIM (Protocol Independent Multicast)

Supported

Supported

LLDP (Link Layer Discovery Protocol)

Supported

Supported

SNMP (Simple Network Management Protocol)

Supported

Supported


Benefits of Upgrading to Nexus 9000

Upgrading from Nexus 7000 to Nexus 9000 switches offers a plethora of benefits that can significantly enhance the efficiency, security, and scalability of an organization's network infrastructure. Let's delve into these benefits in detail:

Improved Performance

Nexus 9000 switches typically offer higher throughput, lower latency, and enhanced processing capabilities compared to Nexus 7000 switches. This translates to faster data transmission, reduced response times, and improved overall network performance, especially in high-demand environments

Enhanced Security Features

Nexus 9000 switches come equipped with advanced security features such as TrustSec, MACsec, and integrated threat defense mechanisms. These features provide robust protection against unauthorized access, data breaches, and cyber threats, ensuring the integrity and confidentiality of sensitive information.

Scalability and Flexibility

With support for higher port densities and increased bandwidth options, Nexus 9000 switches offer greater scalability and flexibility to accommodate the evolving needs of modern data centers. Organizations can seamlessly expand their network infrastructure to support growing workloads, applications, and user demands without compromising performance or reliability.

Simplified Management and Automation

Nexus 9000 switches use automation and programmability capabilities to simplify network management tasks, streamline configuration workflows, and automate routine operations. This reduces the burden on IT teams, improves operational efficiency, and enables faster deployment of new services and applications.

Integration with Software-Defined Networking (SDN)

Organizations can deploy policy-driven network automation, centralized management, and dynamic resource allocation by utilizing Nexus 9000 switches that support software-defined networking (SDN) technologies like Cisco's Application Centric Infrastructure (ACI). This facilitates greater agility in responding to changing business requirements.

Cost Savings and Investment Protection

While upgrading to Nexus 9000 switches may entail initial investment costs, the long-term benefits, including improved performance, scalability, and security, often outweigh the upfront expenses. Additionally, Nexus 9000 switches offer a future-proof platform with support for emerging technologies and standards, ensuring continued relevance and value for years to come.

Ecosystem Integration and Compatibility

Nexus 9000 switches seamlessly integrate with existing Cisco ecosystem components, including routers, firewalls, and management tools, ensuring interoperability and compatibility across the network infrastructure. This simplifies integration efforts and facilitates cohesive end-to-end solutions for diverse business requirements.

Migration Process

Assessment and Planning

Before embarking on the migration journey, it's essential to conduct a thorough assessment of the existing network infrastructure, including:

  • Inventory of current hardware and software.
  • Analysis of traffic patterns and bandwidth requirements.
  • Identification of critical applications and services.

Preparation and Testing

  • Back up configuration settings and ensure compatibility with Nexus 9000 switches.
  • Conduct pilot tests in a controlled environment to validate functionality and performance.
  • Develop a rollback plan to mitigate potential risks during the migration process.

Execution and Validation

  • Implement the migration plan in phases to minimize disruptions to network operations.
  • Monitor performance metrics and conduct post-migration testing to ensure seamless functionality.
  • Collaborate with stakeholders and IT teams to address any issues or concerns promptly.

Which Nexus Switch is Better to Migrate?

When considering a migration from older Nexus switches to newer models, such as the Nexus 7000 vs Nexus 9000, the choice depends on various factors specific to the organization's requirements and objectives. While Nexus 7000 switches have served as reliable workhorses in data center environments for years, the Nexus 9000 series offers advancements in technology and features that may better align with modern networking demands.

For organizations seeking enhanced performance, scalability, and support for emerging technologies like software-defined networking (SDN) and automation, migrating to Nexus 9000 switches could be the preferred choice. With features such as programmable ASICs, support for Cisco's Application Centric Infrastructure (ACI), and seamless integration with cloud environments, Nexus 9000 switches enable organizations to build agile, resilient, and future-proof data center networks.

However, the decision to migrate ultimately depends on factors such as budget, existing infrastructure, application requirements, and long-term strategic goals.

Where to Buy Nexus Switches?

When considering the purchase of Nexus switches, it's crucial to choose a reputable vendor that offers quality products and reliable support. One recommended option is ORM Systems, a trusted provider of refurbished Cisco hardware. With a focus on quality assurance and customer satisfaction, ORM Systems ensures that customers receive cost-effective solutions without compromising on performance or reliability.

Contact us now and get a discounted price.

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Conclusion

Migrating from Nexus 7000 to 9000 switches is a strategic decision that can significantly enhance the efficiency, security, and scalability of an enterprise network. By understanding the key differences, following a structured migration process, and leveraging the benefits of Nexus 9000 series switches, organizations can future-proof their infrastructure and adapt to the evolving demands of the digital landscape.

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Frequently Asked Questions

Q. Is it necessary to migrate from Nexus 7000 to 9000 switches?
A. While it's not mandatory, migrating to Nexus 9000 switches offers numerous benefits in terms of performance, security, and scalability, making it a worthwhile investment for many organizations.

Q. What are some common challenges associated with the migration process?
A. Common challenges include compatibility issues, data migration complexities, and potential disruptions to network operations. However, thorough planning and testing can help mitigate these challenges effectively.

Q. Can Nexus 9000 switches integrate with existing network infrastructure?
A. Yes, Nexus 9000 switches are designed to seamlessly integrate with existing Cisco infrastructure, ensuring compatibility and interoperability across the network environment.

Q. How long does the migration process typically take?
A. The duration of the migration process varies depending on factors such as the size of the network, the complexity of configurations, and the extent of testing required. It's advisable to allocate sufficient time for planning and execution to ensure a smooth transition.

Q. What support options are available for Nexus 9000 switches?
A. Cisco offers comprehensive support services for Nexus 9000 switches, including software updates, technical assistance, and warranty coverage. Additionally, partnering with reputable vendors like ORM Systems can provide additional support and expertise.


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