How Do I Use Teaming with IntelŽ Advanced Network Services (IntelŽ ANS)?
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Adapter teaming with Intel® Advanced Network Services (Intel® ANS) uses an intermediate driver to group multiple physical ports. Teaming can be used to add fault tolerance, load balancing, and link aggregation features to a group of ports.
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Drivers and software for Intel Ethernet Adapters includes drivers for the following operating systems: 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
Intel ANS is installed by default along with Intel® PROSet for Windows Device Manager*. See the screenshot 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. Because Intel ANS is checked by default, no special action is required during installation.
If you uncheck Intel ANS during installation, then you need to modify the installation and select Intel ANS as an install 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.
When creating a team on a supported adapter, ports on nonsupported 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 and PRO/1000 adapters that plug into PCI or PCI-X* slots do not 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.
Devices with TCP Offload Engine (TOE) enabled cannot be added to a team and do not display in the list of available adapters.
Windows Server 2012 adds support for NIC teaming, also known as Load Balancing and Failover (LBFO). Intel ANS teaming and VLANs are not compatible with Microsoft LBFO teams. Intel® PROSet Software blocks a member of an LBFO team from being added to an Intel ANS team or VLAN. Do not 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, do 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 re-create them. This step is optional but strongly recommended. All bindings are restored when the LBFO team is removed.
If you add an Intel® AMT-enabled port to an LBFO team, do not set the port to Standby in the LBFO team. If you set the port to Standby, you can lose 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 Uses one or more secondary adapters to take over for the primary adapter should the first adapter, its cabling, or the link partner fail. 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 the 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.)
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® PROSet 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 to provide a fault-tolerant network connection in the event that the first adapter, its cabling, or the switch fails. Only two adapters can be assigned to an SFT team.
Do not put clients on the SFT team link partner switches, because they do not 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 28 ports to multiple destination addresses and incorporates Adapter Fault Tolerance. 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 28 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 are using Microsoft Hyper-V*.
RLB mode is not 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. The primary adapter, regardless of speed, 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 does not 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.
Intel 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.
IEEE 802.3ad This standard has been implemented in two ways:
Here is a chart of the features and modes available.
Layer 3 Address Aggregation
Layer 2 Address Aggregation
Mixed Speed Adapters
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.
Multivendor teaming (MVT) is applicable to all modes in Windows.
There is a utility in Intel PROSet for Windows Device Manager on the Advanced Settings Team page that allows the 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 displays listing possible corrective actions. When running this test, the team temporarily loses network connectivity. See Intel PROset for Windows Device Manager Help for limitations.
You can use static IP addresses for most servers, including a server with a team of NICs. DHCP can also be used for Server 2012 configuration. If you have no DHCP, then you will need to manually assign IP addresses to your teams when they are 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-enabled (Intel® AMT) devices to Adapter Fault Tolerance (AFT), Switch Fault Tolerance (SFT), and Adaptive Load Balancing (ALB) teams. All other team types are not 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 those of the actual physical adapters. Also, 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 all transmit IP or NetWare*1 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 is 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:
<e100XbN>\parameters\iansprotocol\BindTimerTimeout set value to 0 where N = the card instance
Steps must be repeated whenever Intel PROset for Windows Device Manager changes.
1Advanced Networking Support (ANS) features are not 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.