Chapter 20. Switch Partition - Lenovo ThinkSystem NE2552E Application Manual

Chapter 20. Switch Partition

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Switch Partition (SPAR) enables consolidation of multiple network partitions
within an embedded switch. SPARs divide the data plane of a physical switch into
independent switching domains. Switch partitions are isolated from each other.
Traffic originating in one SPAR stays local to that SPAR. Within a partitioned
switch, traffic from one SPAR is never delivered to another SPAR. Traffic from one
SPAR can, however, be delivered to another SPAR by traversing an upstream link
and switch.
Each individual SPAR requires exactly one uplink, which can be a port, a port
channel, or an LACP group. Limiting SPAR connectivity to one external uplink
prevents the creation of loops.
SPAR operates as a Layer 2 broadcast network. Hosts on the same VLAN, attached
to a SPAR, can communicate with each other and with the upstream switch. Hosts
on the same VLAN, but attached to different SPARs, communicate via the
upstream switch.
Chapter 20: Switch Partition
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