Advance network solutions

Chapter Objectives

  • 9.1 Implement high-performance network solutions
  • 9.2 Determine scenarios and requirements for implementing software-defined networking

Configuring NIC Teaming

  • NIC Teaming:

    • Combines multiple network interfaces to increase available bandwidth.
    • Load Balancing and Failover (LBFO):
    • Distributes traffic improving overall throughput.
    • Provides redundancy to recover from hardware failures.

  • Configuration:

    • Use Server Manager or PowerShell for setup.

  • PowerShell Cmdlets:

    • Get-NetLbfoTeam - List NIC teams.
    • New-NetLbfoTeam - Create and add adapters to a team.
    • Remove-NetLbfoTeam - Delete a team.
    • Rename-NetLbfoTeam - Rename a team.
    • Set-NetLbfoTeam - Modify team properties.
    • To get help, use get-help [cmdlet].

NIC Teaming Modes

  • Two Main Modes:

    • Teaming Modes:
    • Switch Independent: connects NICs to separate switches for fault tolerance.
    • Static Teaming: primarily for load balancing.
    • LACP: automatically identifies ports and creates teams dynamically.

  • Balancing Modes:

    • Address Hash: hash value based on packet properties.
    • Hyper-V Port: specifically for Hyper-V switches.
    • Dynamic: default, balances traffic evenly among adapters.

NIC Teaming on Virtual Machines (VMs)

  • Follows the same configuration process as physical machines.
  • Enable NIC teaming in the Network Adapter’s Advanced Features dialog.
  • Configure only on VMs connected to external switches; if configured on Hyper-V host, VMs don’t require separate configuration.

Implementing Switch Embedded Teaming (SET)

  • SET:
    • Allows up to 8 identical physical adapters as a team mapped to a virtual switch.
    • Configuration Example:
    • New-VMSwitch -Name SETSwitch1 -NetAdapter Ethernet1, Ethernet2 -EnableEmbeddedTeaming $true
    • Supports RDMA; RDMA can be enabled via Enable-NetAdapterRDMA.

Comparison: NIC Teaming vs. SET

  • SET is bound to Hyper-V virtual switches; NIC teaming supports mixed NICs.
  • SET requires identical NICs operating at the same speed; NIC teaming supports varied speeds.
  • SET provides all NICs active for load balancing; NIC teaming can offer active/standby.

Configuring Data Center Bridging (DCB)

  • DCB enhances correlations in enterprise data centers, improving iSCSI performance by managing network traffic efficiently.
  • Configuration:
    • Use Add Roles and Features Wizard or Install-WindowsFeature to set up.
    • Use commands like Set-NetQoSDcbxSetting and Enable-NetAdapterQoS to manage settings.

Quality of Service (QoS) with DCB

  • QoS: Prioritize different types of network traffic.
  • Configuration Steps:
    1. Install DCB and enable it on NICs.
    2. Create QoS policies and traffic classes to define priorities.

Virtual Machine Queue (VMQ)

  • Deliver packets directly to vNICs, reducing overhead and improving performance.
  • Managed by enabling/disabling VMQ on each vNIC and can be fine-tuned to utilize CPU cores.

Receive Side Scaling (RSS)

  • Distributes processing of incoming network traffic across CPU cores.
  • Enable using Enable-NetAdapterRSS; adjust settings with Set-NetAdapterRSS.

Software-Defined Networking (SDN)

  • SDN: Centralizes management of network infrastructure (routers, switches). Key components include Hyper-V virtual switches.
  • Advantages: centralized management and enhanced flexibility.
  • Deployment Requirements: Windows Server 2016 Datacenter, RDMA-compatible NICs, DCB-compatible switches.

Hyper-V Network Virtualization (HNV)

  • Decouples the virtual network from the physical, allowing live migration across subnets.
  • Benefits: network isolation, supports cross-subnet migration, maintains existing infrastructure during moves.

Distributed Firewall Policies

  • Manage firewall policies across virtual networks using Datacenter Firewall service.
  • Enable tenant-defined firewall rules for flexible configuration.

Summary of Key Concepts

  • NIC teaming increases bandwidth and provides failover.
  • Switch Embedded Teaming (SET) integrates NICs with virtual switches for efficiency.
  • Data Center Bridging (DCB) optimizes networking for enterprise scenarios.
  • Quality of Service ensures priority management of network traffic.
  • Software-Defined Networking enhances overall network management efficiency and security policies.