Qlogic FastLinQ 3400 Series, User Manual

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15–QLogic Teaming Services
Executive Summary
176 83840-546-00 E
Teaming Concepts

Network Addressing

Teaming and Network Addresses

Description of Teaming Types
The concept of grouping multiple physical devices to provide fault tolerance and
load balancing is not new. It has been around for years. Storage devices use
RAID technology to group individual hard drives. Switch ports can be grouped
together using technologies such as Cisco Gigabit EtherChannel, IEEE 802.3ad
Link Aggregation, Bay Network Multilink Trunking, and Extreme Network Load
Sharing. Network interfaces on servers can be grouped together into a team of
physical ports called a virtual adapter.
PXE Preboot Execution Environment
RAID redundant array of inexpensive disks
Smart Load Balanc-
ing™ and Failover Switch-independent failover type of team in which the primary
team members handle all incoming and outgoing traffic while
the standby team member (if present) is idle until a failover
event (for example, loss of link occurs). The intermediate NIC
teaming driver (QLASP) manages incoming/outgoing traffic.
Smart Load Balanc-
ing (SLB) Switch-independent load balancing and failover type of team, in
which the intermediate driver manages outgoing/incoming traf-
fic.
TCP Transmission Control Protocol
UDP User Datagram Protocol
WINS Windows name service
WLBS Windows Load Balancing Service
Table 15-1. Glossary (Continued)
Item Definition