Specifications

18 ExtremeWare XOS 10.1 Concepts Guide
ExtremeWare XOS Overview
NOTE
For more information on STP, see Chapter 10.
Quality of Service
ExtremeWare XOS has Policy-Based Quality of Service (QoS) features that 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 customize other QoS policies and apply them to different traffic types so that they have
different guaranteed minimum bandwidth, maximum bandwidth, and priority.
NOTE
For more information on Quality of Service, see Chapter 7.
Unicast Routing
The switch can route IP or IPX traffic between the VLANs that are configured as virtual router
interfaces. Both dynamic and static IP routes are maintained in the routing table. The following routing
protocols are supported:
• RIP version 1
• RIP version 2
• OSPF version 2
• BGP version 4
NOTE
For more information on IP unicast routing, see Chapter 12. For more information on RIP, see
Chapter 20.
IP Multicast Routing
The switch can use IP multicasting to allow a single IP host to transmit a packet to a group of IP hosts.
ExtremeWare XOS supports multicast routes that are learned by the Protocol Independent Multicast
(dense mode or sparse mode).
NOTE
For more information on IP multicast routing, see Chapter 15.
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 load 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.