Hunt Groups - Lucent Technologies Cajun P220 Operation Manual

Cajun P550 Switch Overview

Hunt Groups

Hunt groups (also known as link aggregation) aggregate bandwidth from multiple ports
so they act as one high-bandwidth switch port. The concept used is borrowed from the
world of telephony, where incoming calls to a single phone number are routed to the
first available line. Hunt groups allow you to create multi-gigabit pipes to transport traffic
through the highest traffic areas of your network.
A hunt group provides:
Inter-operation with other vendor's equipment (for example, Cisco's Etherchannel
and Sun's Quad Adapter).
Shared traffic load.
Destination address-based traffic sorting, which keeps packets in the right order.
Fault tolerance. If a port in a group fails, the remaining ports in the group pick up
the traffic load.
Support for any number of same-speed connections in a group.
Faster recovery from link failure: If a port in the group fails, the remaining ports
can carry the load. Recovery not limited by spanning tree convergence time
(convergence time is the time the network takes to resume steady-state forwarding
after spanning tree reconfiguration).
Up to ten groups per switch.
1-10
Figure 1-5. flooding Domain
Virtual Bridging
Virtual Bridging
Function
Virtual Bridging
Function
Virtual Bridging
Function
Function
Frame Classification
Function
Port
Cajun P550/P220 Switch Operation Guide