Extreme Networks 200 Series - Manual (Page 41)

Summary of Features
Summit 200 Series Switch Installation and User Guide 39
Quality of Service
ExtremeWare has Quality of Service (QoS) features that support IEEE 802.1p, MAC QoS, and four
queues. These features enable you to specify service levels for different traffic groups. By default, all
traffic is assigned the “normal” QoS policy profile. If needed, you can create other QoS policies and
rate-limiting access control lists and apply them to different traffic types so that they have different
maximum bandwidth, and priority.
NOTE
For more information on Quality of Service, see Chapter 12, “Quality of Service (QoS)”.
Unicast Routing
The Summit 200 series switch can route IP traffic between the VLANs that are configured as virtual
router interfaces. Static IP routes are maintained in the routing table. The following routing protocols
are supported:
• RIP version 1
• RIP version 2
• OSPF
NOTE
For more information on IP unicast routing, see Chapter 15, “IP Unicast Routing”.
Load Sharing
Load sharing allows you to increase bandwidth and resiliency by using a group of ports to carry traffic
in parallel between systems. The sharing algorithm allows the switch to use multiple ports as a single
logical port. For example, VLANs see the load-sharing group as a single virtual port. The algorithm also
guarantees packet sequencing between clients.
On stacked configurations, load sharing is not supported through the stacking port. Members of a load
sharing group must reside on the same slot.
NOTE
For information on load sharing, see Chapter 6, “Configuring Ports on a Switch”.
ESRP-Aware Switches
Extreme switches that are not running ESRP, but are connected on a network that has other Extreme
switches running ESRP are ESRP-aware. When ESRP-aware switches are attached to ESRP-enabled
switches, the ESRP-aware switches reliably perform fail-over and fail-back scenarios in the prescribed
recovery times. No configuration of this feature is necessary.