Chapter 33. Basic Redundancy; Trunking For Link Redundancy - Lenovo Flex System Fabric CN4093 Application Manual

Chapter 33. Basic Redundancy

Trunking for Link Redundancy

© Copyright Lenovo 2015
Lenovo N/OS 8.2 includes various features for providing basic link or device
redundancy:
 "Trunking for Link Redundancy" on page 461
 "Hot Links" on page 462
Multiple switch ports can be combined together to form robust, high‐bandwidth
trunks to other devices. Since trunks are comprised of multiple physical links, the
trunk group is inherently fault tolerant. As long as one connection between the
switches is available, the trunk remains active.
In Figure 55, four ports are trunked together between the switch and the enterprise
routing device. Connectivity is maintained as long as one of the links remain
active. The links to the server are also trunked, allowing the secondary NIC to take
over in the event that the primary NIC link fails.
Figure 55. Trunking Ports for Link Redundancy
Enterprise
Routing Switch
Internet
For more information on trunking, see "Ports and Trunking" on page
Trunk Trunk
Server
NIC 1
NIC 2
131.
461