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SmartConnect User’s Guide
BMD00082, February 2009 Chapter 3: Switch Virtualization
35
Internal Trunks
Internal trunks allow for more granular high-availability options for the links between the serv-
ers and switches within a blade server chassis. Internal trunks have the following requirements:
One or more blade servers in the blade chassis must be installed with multiple NICs and
be configured for NIC Teaming. The actual number of supported NICs depends on the
specific server and chassis model, and the capabilities of the NIC Teaming software.
Multiple SmartConnect switches in the same blade chassis as the servers must be linked
together as part of a stacked configuration (see “Stacking” on page 43). The number of
SmartConnect switches installed in the chassis (and their slot locations) must coincide
with the slots targeted by the blade servers’ NICs.
For additional restrictions, see “Trunking Rules” on page 32.
Figure 3-C shows a high-availability network combining external and internal trunks in a
stacked switch configuration.
Figure 3-C Trunking Internal Ports
Member
Switch
Server
Server
Server
Server
Member
Switch
Blade Server Chassis 2
Server
Server
Server
Server
Member
Switch
Master
Switch
Blade Server Chassis 1
Servers with
Teamed NICs
Internal
Trunks
Stacked Switches
& Support Links
External
Uplink Trunks
Trunk
Trunk
Internet
Enterprise
Routing Switches