Intel 82599 10 GbE Controller Datasheet ®

Intel

®

82599 10 GbE Controller—Overview of New Capabilities Beyond the 82598

1.4.7.2 Packet Filtering and Replication

The 82599 adds extensive coverage for packet filtering for virtualization by supporting the following filtering modes:

• Filtering by unicast Ethernet MAC address

• Filtering by VLAN tag

• Filtering of multicast Ethernet MAC address

• Filtering of broadcast packets

For each of the above categories, the 82599 can replicate packets to multiple Virtual

Machines (VMs). Various mirroring modes are supported, including mirroring a VM, a

Virtual LAN (VLAN), or all traffic into a specific VM.

1.4.7.3 Packet Switching

The 82599 forwards transmit packets from a transmit queue to an Rx software queue to support VM-VM communication. Transmit packets are filtered to an Rx queue based on the same criteria as packets received from the wire.

1.4.7.4 Traffic Shaping

Transmit bandwidth is allocated among the virtual interfaces to avoid unfair use of bandwidth by a single VM. Allocation is done separately per DCB traffic class so that bandwidth assignment to each traffic class is partitioned among the different VMs.

1.4.8 VPD

The 82599 supports VPD capability defined in the PCI Specification, version 3.0. See

Section 3.4.9

for more details.

1.4.9 Double VLAN

The 82599 supports a mode where all received and sent packets have at least one VLAN tag in addition to the regular tagging that can optionally be added. This mode is used for systems where the switches add an additional tag containing switching information.

When a port is configured to double VLAN, the 82599 assumes that all packets received or sent to this port have at least one VLAN. The only exception to this rule is flow control

packets, which don't have a VLAN tag. See Section 7.4.5

for more details.

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