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​Cisco Nexus N9K-C9372TX-E Switch Configuration Guide
Jun 05 , 2025 177

Cisco Nexus N9K-C9372TX-E Switch Configuration Guide

Optimizing Copper-Based Network Environments

Device Profile
The Cisco Nexus N9K-C9372TX-E is designed for hybrid network environments, featuring 48x 10GBase-T ports and 6x 40/100G QSFP28 uplinks.

1. Performance Configuration
(Tested vs Official Specs)

SpecificationOfficialReal-World
Switching Capacity1.3 Tbps1.28 Tbps
Memory16GB DDR4220K MAC entries
StorageDual 64GB SSDConfig load ≤9s

N9K-C9372TX-E（水印）.png

2. Enabling PoE

switch# configure terminal
switch(config)# poe enable
switch(config)# interface range eth1/1/1-24  
switch(config-if-range)# poe priority critical

3. Link Aggregation Setup

switch(config)# interface port-channel 100
switch(config-if)# description "Uplink_to_Core"
switch(config)# interface eth1/49-50
switch(config-if-range)# channel-group 100 mode active

4. Compatibility Settings

Device TypeConfiguration Command
Legacy PLC Equipmentnegotiation auto
Arista Switcheslacp rate fast
VMware ESXi Hostsmtu 9216

5. Troubleshooting Commands

switch# show poe detail 
Port 1/24: 
  Device: Cisco IP Phone 8865 
  Allocated: 22.5W | Actual: 19.3W

switch# test cable-diagnostics tdr interface eth1/1/1
Status: Normal | Length: 32m

6. Power Management

switch# show environment power
Total: 850W (Max: 2400W)
Idle Ports: 0.15W/port

7. Cost Analysis

  • Purchase Price: $11,200

  • 5-Year Savings:

    • Eliminates fiber converters ($185/port)

    • Removes PoE injectors ($420/unit)

    • Reduces power costs by 28%

Tags: cisco Network Switches Cisco switch

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