Routing

Answer

The following are the major QoS properties and their features:

Queuing at the VLAN level, per Packet Forwarding Engine using I-chip

• 4,000 schedulers with four queues
• 2,000 schedulers with eight queues

Hierarchical QoS

• Traffic shaping at the physical port and at the customer VLAN or set of VLANs with the same service VLAN.
• The traffic-control-profiles configuration statement is extended to support QoS at the interface-set level.
• Support for priority propagation.
• Shape traffic at the physical port and the customer VLAN and set of customer VLANs with the same service VLAN.
• More customer VLAN schedulers than previous solutions: 2,000 eight-queue schedulers or 4,000 four-queue schedulers per 10 Gigabit Ethernet, versus 1,000 any-queue schedulers per 10 Gigabit Ethernet for IQ2.
• Three levels of priority versus only two levels with IQ and IQ2.
• Priority propagation—Priority from the queue level is preserved/demoted when passing logical interface or interface set stages.
• Shaping and scheduling at inner/outer VLAN tag levels using a logical interface or interface set.

Queues and forwarding classes

• Eight queues per port
• 16 forwarding classes
• Four scheduling priorities per queue
• Four WRED profiles per queue with flexible RED profiles

For more information, see MX Series Interface Module Reference