Cx4 Cable Length - Supermicro SSE-X3348T/R User Manual

1/10 and 10-Gigabit Layer 2/3 Ethernet Switches User's Manual
a. HC refers to the High Capacity of the counter used. The regular counter is 32-bit,
whereas the HC counter is 64-bit.

CX4 Cable Length

Stacking is supported with Supermicro CX-4 cables only. The CX-4 cable used for
stacking should be no more than 3-meters in length, because stacking internally runs at
12-Gbps and therefore requires a more robust signal than longer cable lengths might
provide reliably. The industry standard stacking cable length is 3-meters.
NOTE: For stacking ports, you do not need to configure CX4 cable length. It is
fixed as "short" for stacking ports.
NOTE: Using any CX4 cable other than one from Supermicro may give
unreliable performance and is not supported. Use CBL-0474L for 1-meter
connections or CBL-0389L-01 for 3-meter connections
When used for 10G Ethernet uplinks, the CX-4 ports can be from 1-meter to 12-meters
in length; the maximum CX-4 cable length supported on Supermicro switches is
12-meters.
It is acceptable to use a 1-meter stacking cable for port 1 and a 12-meter uplink cable for
port 2. You will only need to configure the long cable preference for port 2. Do this by
selecting the Port Number in the CX4 C
selecting the "long" option.
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5-62
(Figure 5-46) and then