3Com 4007, Command Reference Manual

Page: 149 / 574

8
T
RUNKING
(L
INK
A
GGREGATION
)
You can configure a module to aggregate multiple network links into a
single
trunk . With trunking (also called link aggregation ) you can increase
the bandwidth of point-to-point connections without changing existing
cabling or switch equipment. In addition, trunking provides
point-to-point redundancy between two devices. Redundant physical
links normally have one link disabled either by Spanning Tree or by the
resilient links feature to prevent looping; but trunking uses both links.
This chapter provides key information about the commands for creating
and managing trunks from your Switch 4007 modules.
A module treats trunked bridge ports in the same way that it treats
normal individual bridge ports. Also, all higher-level network functions —
including Spanning Tree algorithms, virtual LANs (VLANs), and Simple
Network Management Protocol (SNMP) management — do not
distinguish a trunk from any other network port. If any of the trunk’s
ports go down or up, the module automatically redistributes traffic across
the new arrangement of operational ports.
For more information about using trunks in your network, see the
Switch 4007 Implementation Guide .
The Switch 4007 software and management interfaces are built from
CoreBuilder
®
9000 switch technology. In Switch 4007 software
releases 3.0.0 and 3.0.5, the prompts and displays in all interfaces may
indicate this heritage.