Adapter teaming with Intel® Advanced Network Services (Intel® ANS) uses an intermediate driver to group multiple physical ports. You can use teaming to add fault tolerance, load balancing, and link aggregation features to a group of ports.
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Download Intel® ANS teaming software
Drivers and software for Intel® Ethernet Adapters lists driver downloads for Intel® Ethernet Adapters that include Intel® ANS teaming software. A separate download for teaming software isn't required or available.
The drivers and software for Intel® Ethernet Adapters includes drivers for the following operating systems:
- Windows® 10
- Windows 8.1* and Server 2012* drivers
- Windows 8* and Server 2012 drivers
- Windows 7* and Server 2008* R2 drivers
- Windows Vista* and Server 2008 drivers
- Windows XP* and Server 2003* drivers
Older Windows and Linux* drivers, utilities, and other downloads
Install Intel ANS teaming software
Intel ANS is installed by default along with Intel® PROSet for Windows Device Manager. See the image below.
When you run the installation from the CD included with your software or from downloaded software, the Setup Option gives you the choice to install Intel ANS. The default selection is Intel ANS, so no special action is required during installation.
If you uncheck Intel ANS during installation, you need to modify the installation and select Intel ANS as an installation option.
If your adapter supports teaming, then a Teaming tab displays in Windows Device Manager after installing the software. Use the New Team option and follow the wizard to create a team.
Teaming options are supported for Windows versions where the following Intel adapters receive full software support:
- Intel® Server Adapters
- Converged network adapters
- Intel® Gigabit CT Desktop Adapters
Support for Intel® PROSet and Intel® Advanced Network Services (Intel® ANS) provides information on adapters with full support for Windows 7 and later.
When creating a team on a supported adapter, ports on non-supported adapters can display in the Intel® PROSet teaming wizard. Any port that displays in the Intel PROset teaming wizard can be included in a team including older Intel adapters and non-Intel adapters.
Intel® PRO/100 Adapters and PRO/1000 adapters that plug into PCI or PCI-X* slots don't support Intel® ANS teaming in any Windows versions later than Windows Vista and Windows Server 2008.
Some advanced features, including hardware offloading, are automatically disabled when non-Intel adapters are team members to assure a common feature set.
TCP Offload Engine (TOE) enabled devices can't be added to a team and don't display in the list of available adapters.
Microsoft Windows Server 2012* NIC teaming
Windows Server 2012 adds support for NIC teaming, also known as Load Balancing and Failover (LBFO). Intel ANS teaming and VLANs aren't compatible with Microsoft LBFO teams. Intel® PROSet blocks a member of an LBFO team from being added to an Intel ANS team or VLAN. Don't add a port that is part of an Intel ANS team or VLAN to an LBFO team. Adding a port can cause system instability.
If you use an Intel ANS team member or VLAN in an LBFO team, use the following procedure to restore your configuration:
- Reboot the server.
- Remove LBFO team. Even though LBFO team creation failed, after a reboot the Server Manager reports that LBFO is enabled. The LBFO interface is present in the NIC Teaming GUI.
- Remove the Intel ANS teams and VLANS involved in the LBFO team and recreate them. This step is optional but strongly recommended. All bindings are restored when the LBFO team is removed.
|Note||If you add an Intel® Active Management Technology (Intel® AMT) enabled port to an LBFO team, don't set the port to Standby in the LBFO team. If you set the port to standby, you can lose Intel AMT functionality.|
Teaming features include failover protection, increased bandwidth throughput aggregation, and balancing of traffic among team members. Teaming Modes are AFT, SFT, ALB, Receive Load Balancing (RLB), SLA, and IEEE 802.3ad Dynamic Link Aggregation.
Features available using Intel ANS include:
- Fault Tolerance
If the primary adapter, its cabling, or the link partner fails, Intel ANS uses one or more secondary adapters to take over. Designed to guarantee server availability to the network.
- Link Aggregation
Combines multiple adapters into a single channel to provide greater bandwidth. Bandwidth increase is only available when connecting to multiple destination addresses. ALB mode provides aggregation for transmission only while RLB, SLA, and IEEE 802.3ad dynamic link aggregation modes provide aggregation in both directions. Link aggregation modes require switch support, while ALB and RLB modes can be used with any switch.
- Load Balancing
The distribution of the transmission and reception load among aggregated network adapters. An intelligent adaptive agent in the Intel ANS driver repeatedly analyzes the traffic flow from the server and distributes the packets based on destination addresses. In IEEE 802.3ad modes, the switch provides load balancing on incoming packets.
Note Load Balancing in ALB mode can only occur on Layer 3 routed protocols (IP and NCP IPX). Load Balancing in RLB mode can only occur for TCP/IP. Non-routed protocols are transmitted only over the primary adapter.
- Adapter Fault Tolerance (AFT)
Allows mixed models and mixed connection speeds as long as there is at least one Intel® PRO server adapter in the team. A 'failed' primary adapter passes its MAC and Layer 3 address to the failover (secondary) adapter. All adapters in the team should be connected to the same hub or switch with Spanning Tree (STP) set to Off.
- Switch Fault Tolerance (SFT)
Uses two adapters connected to two switches. It provides a fault tolerant network connection if the first adapter, its cabling, or the switch fails. Only two adapters can be assigned to an SFT team.
- Don't put clients on the SFT team link partner switches. They don't pass traffic to the partner switch at fail.
- Spanning Tree (STP) must be running on the network to make sure that loops are eliminated.
- Turn off STP on the incoming ports of the switches directly connected to the adapters in the team, or configure ports for PortFast.
- Only 802.3ad DYNAMIC mode allows failover between teams.
Diagram of Switch Fault Tolerance (SFT) Team with Spanning Tree Protocol
Adaptive Load Balancing (ALB)
Offers increased network bandwidth by allowing transmission over two to eight ports to multiple destination addresses. It incorporates AFT. Only the primary adapter receives incoming traffic. Broadcasts/multicasts and non-routed protocols are only transmitted via the primary adapter in the team. The Intel® ANS software load balances transmissions, based on Destination Address, and can be used with any switch. Simultaneous transmission only occurs at multiple addresses. This mode can be connected to any switch.
- Receive Load Balancing (RLB)
- Offers increased network bandwidth by allowing reception over two to eight ports from multiple addresses.
- Can only be used in conjunction with ALB.
- RLB is enabled by default when an ALB team is configured unless you're using Microsoft Hyper-V*.
- RLB mode isn't compatible with Microsoft Hyper-V*. Use Virtual Machine Load Balancing mode if you want to balance both transmit and receive traffic.
- Only the adapters connected at the fastest speed are used to load balance incoming TCP/IP traffic. Regardless of speed, the primary adapter receives all other RX traffic.
- Can be used with any switch. Any failover increases network latency until ARPs are resent. Simultaneous reception only occurs from multiple clients.
- Virtual Machine Load Balancing (VMLB)
VMLB teaming mode was created specifically for use with Microsoft Hyper-V*. VMLB provides transmit and receive traffic load balancing across Virtual Machines bound to the team interface. The LMLB team also provides fault tolerance in the event of switch port, cable, or adapter failure. This teaming type works with any switch.
The driver analyzes the transmit and receive load on each member adapter and balances the traffic across member ports. In a VMLB team, each Virtual Machine is associated with one team member port for its TX and RX traffic.
For example: If you have three virtual machines and two member ports, and if VM1 has twice as much traffic as the combination of VM2 and VM3, then VM1 is assigned to team member port 1, and VM2 and VM3 share team member port 2.
If only one virtual NIC is bound to the team, or if Hyper-V is removed, then the VMLB team acts like an AFT team.
- VMLB doesn't load balance non-routed protocols such as NetBEUI and some IPX* traffic.
- VMLB supports from two to eight ports per team.
- You can create a VMLB team with mixed-speed adapters. The load is balanced according to the lowest common denominator of adapter capabilities, and the bandwidth of the channel.
Link Aggregation (LA), Cisco* Fast EtherChannel (FEC), and Gigabit EtherChannel (GEC)
- Modes replaced by Static Link Aggregation mode.
- See IEEE 802.3ad Static Link Aggregation mode below.
This standard has been implemented in two ways:
- Static Link Aggregation (SLA):
- Equivalent to EtherChannel or Link Aggregation.
- Must be used with an 802.3ad, FEC/GEC, or Link Aggregation capable switch.
- DYNAMIC mode
- Requires 802.3ad DYNAMIC capable switches.
- Active aggregators in software determine team membership between the switch and the ANS software (or between switches).
- There is a maximum of two aggregators per server and you must choose either maximum bandwidth or maximum adapters.
Both 802.3ad modes include adapter fault tolerance and load balancing capabilities. However in DYNAMIC mode load balancing is within only one team at a time.
IEEE 802.3ad Link Aggregation (LAG): what it is, and what it is not presents more information.
- Static Link Aggregation (SLA):
Available features and modes:
|Layer 3 Address Aggregation||X||IP only||X||X|
|Layer 2 Address Aggregation||X||X|
|Mixed Speed Adapters*||X||X||X||X|
- You can mix different adapter types for any mode. But you must run all the adapters in the team at the same speed when using Link Aggregation mode. Mixed Speed connections are possible in AFT, ALB, RLB, SFT, and 802.3ad modes.
- Multi-vendor teaming (MVT) is applicable to all modes in Microsoft Windows.
For AFT, SFT, ALB, and RLB modes you can choose a primary and secondary role for selected adapters.
- The primary adapter is the adapter that carries the most traffic.
- With AFT and SFT, it's the only adapter used until that link fails.
- With ALB and non-routable protocols (anything other than IP or Novell IPX), it's the only adapter used. It's also the only adapter used for broadcast and multicast traffic.
- With RLB, all traffic other than IP traffic, is passed on the primary adapter, regardless of its speed.
- If you set the primary adapter instead of the software, and it's active at fail time, it allows failback to the chosen primary adapter.
Note When a primary is removed from a team, its MAC address stays with the team until the server is rebooted. Don't add the primary back on that network until the server it was removed from is rebooted.
- The secondary adapter becomes the primary (if possible) at failure of the primary, or its cable or link partner.
Test switch configuration
A utility in Intel® PROset for Windows Device Manager* on the Advanced Settings Team page allows Intel® ANS software to query the switch partner for configuration settings. If the switch is configured differently than necessary for the team mode, a troubleshooting page lists possible corrective actions. When you run this test, the team temporarily loses network connectivity.
See Intel PROset for Windows Device Manager Help for limitations.
Implementation considerations, including throughput and resource issues
- You can use static IP addresses for most servers including a server with a team of NICs. You can also use DHCP for Server 2012 configuration. If you have no DHCP, you need to manually assign IP addresses to your teams when they're created.
- For all team types except SFT, disable spanning tree protocol (STP) on switch ports connected to teamed adapters. Disabling STP prevents data loss when the primary adapter is returned to service (failback). You can also configure an activation delay on the adapters to prevent data loss when STP is used. Set the activation delay on the advanced tab of team properties.
- Not all team types are available on all operating systems and all adapters.
- Hot Plug operations with non-Intel adapters that are part of a team cause system instability. Restart the system or reload the team after doing Hot Plug operations with a team that includes a non-Intel adapter.
- You can add Intel® Active Management Technology (Intel® AMT) enabled devices to Adapter Fault Tolerance (AFT), Switch Fault Tolerance (SFT), and Adaptive Load Balancing (ALB) teams. All other team types aren't supported. The Intel AMT enabled device must be designated as the primary adapter for the team.
- Teams display as Virtual Adapters in Windows. Use the remove team option in Intel PROset for Windows Device Manager to disable or remove virtual adapters. Deleting virtual teams directly in Windows Device Manager can cause severe consequences.
- To avoid repeated unnecessary failovers, disable Spanning Tree Protocol (STP) for all modes except SFT.
- Some OS require reboots with any system configuration change.
- Configure team member features similarly or failover and team functionality are affected with possible severe consequences.
- Virtual Adapters require memory resources beyond the physical adapters. The physical adapter buffers or descriptors might need to be increased when set into a team. If the system is used more heavily, consider tuning both the base adapter and the virtual adapter settings for either RX or TX traffic.
- You can have up to eight ports in a team. But environmental factors (OS, CPUs, RAM, bus, switch capabilities) can limit the benefits of more adapters and determine total throughput capability. SFT can only use two adapters.
- For Link Aggregation/FEC/GEC/802.3ad, you must match the switch capabilities for aggregation. Only use 802.3ad DYNAMIC mode with switches capable of DYNAMIC 3ad active aggregation.
- For AFT and SFT modes, only one adapter is active at a time. With ALB, only one adapter receives while all transmit IP or NetWare1 IPX packets, but never to the same destination address simultaneously.
- Throughput is always higher to multiple addresses than to a single address, regardless of the number of adapters.
- In Windows NT* 4.0, there's a timer for each adapter to prevent a non-working teamed adapter from holding up the boot to desktop. If you are using mixed speed adapters (Intel® PRO/100 with PRO/1000), and using teaming or a large number of VLANs, you can encounter a load time longer than the timer's limit. If this happens, disable the timer for each adapter in the team in the registry under the DWORD BindTimerTimeout:
set value to 0
where N = the card instance
You must repeat the steps whenever Intel PROset for Windows Device Manager changes.
Linux Ethernet Bonding (channel bonding or teaming) in Linux
Find channel bonding documentation can be found in the Linux kernel source, Linux Ethernet Bonding Driver HOWTO.
1Advanced Networking Support (ANS) features aren't available for Novell NetWare beginning with Intel network adapter software release 12.1 and later. Software version 12.0, ANSNWARE.EXE, is available for download and contains the last version of drivers that implement ANS in Novell NetWare.