Cisco Nexus 6000 Series - Configuring the Uplink Distance

Performing these commands might result in traffic disruption on all ports.Note
Procedure
PurposeCommand or Action
Enters global configuration mode.configure terminal
Example:
switch# configure terminal
switch(config)#
Step 1
Enters configuration mode for the specified FEX.
fex chassis_id
Step 2
Example:
switch(config)# fex 100
switch(config-fex)#
The range of the chassis_id value is 100 to 199.
Specifies the shared buffer size (KB).hardware N2248PQ shared-buffer-size
buffer-size
Step 3
The range of the buffer-size value is 3072 KB to
10240 KB.
Example:
switch(config-fex)# hardware N2248PQ
shared-buffer-size 8096
The hardware N2248PQ
shared-buffer-size command specifies the
default shared buffer size of 10240 KB.
Note
This example shows how to configure the shared buffer.
switch# configure terminal
switch(config)# fex 100
switch(config-fex)# hardware N2248PQ shared-buffer-size 8096
switch(config-fex)#
Configuring the Uplink Distance
The Cisco Nexus N2248PQ FEX supports a pause no-drop class up to a distance of 3000 meters between the
FEX and the switch.
The default cable length between the FEX and the switch is 300 meters.
When the pause no-drop class is not configured, the uplink distance configuration has no effect.Note
Cisco Nexus 6000 Series NX-OS Layer 2 Switching Configuration Guide, Release 7.x
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Configuring the Fabric Extender
Configuring the Uplink Distance