Users Guide

254 Stacking
Dell EMC Networking N1500 Series switches stack with other N1500 Series
switches using the 10G SFP+ front-panel ports.
Dell EMC Networking N1124T-ON/N1148T-ON/N1124P-ON/N1148P-ON
switches and N1500 Series switches support high-performance stacking over
the 10G front-panel ports, allowing increased capacity to be added as needed,
without affecting network performance and providing a single point of
management. Up to four Dell EMC Networking N1124T-ON/N1148T-
ON/N1124P-ON/N1148P-ON switches and N1500 Series switches can be
stacked using any 10G port as long as the link bandwidth for parallel stacking
links is the same. Note that configuring a 10G port for stacking also
configures the adjacent partner 10G port for stacking.
A stack of four Dell EMC Networking N1124T-ON/N1148T-ON/N1124P-
ON/N1148P-ON switches and N1500 Series switches has an aggregate
throughput capacity of 192 Gbps. Dell EMC Networking N1124T-
ON/N1148T-ON/N1124P-ON/N1148P-ON and N1500 Series stacking links
operate at 10 Gbps or 5.2% of total aggregate throughput capacity of a full
stack; therefore, it is recommended that operators provision large stacking
topologies such that it is unlikely that a significant portion of the stack
capacity will transit stacking links. One technique for achieving this is to
distribute uplinks evenly across the stack vs. connecting all uplinks to a single
stack unit or to adjacent stacking units.
A stack of 12 48-port Dell EMC Networking N2000, N2100-ON, N3000E-
ON, or N3100-ON Series switches has an aggregate throughput capacity of
576 Gbps. Dell EMC Networking N2000/N2100-ON/N3000E-ON/N3100-ON
Series stacking links operate at 21 Gbps or 3.6% of total aggregate throughput
capacity of a 12 high stack; N2100-ON/N3100-ON stack links can operate at
21 Gbps/40 Gbps; therefore, it is recommended that operators provision large
stacking topologies such that it is unlikely that a significant portion of the
stack capacity will transit stacking links. One technique for achieving this is to
distribute uplinks evenly across the stack vs. connecting all uplinks to a single
stack unit or to adjacent stacking units.
Additional stacking connections can be made between adjacent switch units
to increase the stacking bandwidth provided that all redundant stacking links
have the same port speed. It is strongly recommended that the stacking
bandwidth be kept equal across all stacking connections; that is, avoid mixing
single and double stacking connections within a stack.