Listen to this Post
Cisco NX-OS is a network operating system designed for Nexus switches, offering advanced features for data centers and enterprise networks. Below is a comprehensive cheat sheet covering essential commands for versions 6.x, 7.x, and 9.x.
Basic System Commands
– `show version` – Displays NX-OS version, hardware, and uptime.
– `show running-config` – Shows the current running configuration.
– `show startup-config` – Displays the saved startup configuration.
– `copy running-config startup-config` – Saves the running config to startup.
– `reload` – Reboots the switch.
Interface Configuration
– `configure terminal` – Enters global configuration mode.
– `interface ethernet 1/1` – Enters interface configuration mode.
– `switchport mode access` – Sets the interface as an access port.
– `switchport mode trunk` – Configures the interface as a trunk port.
– `no shutdown` – Enables the interface.
VLAN Commands
– `vlan 10` – Creates VLAN 10.
– `name SALES` – Assigns a name to VLAN 10.
– `show vlan brief` – Lists all VLANs.
– `switchport access vlan 10` – Assigns an access port to VLAN 10.
Routing Commands
– `ip route 192.168.1.0 255.255.255.0 10.0.0.1` – Adds a static route.
– `show ip route` – Displays the routing table.
– `router ospf 1` – Enables OSPF process 1.
– `network 10.0.0.0 0.0.0.255 area 0` – Advertises a network in OSPF.
Security & Troubleshooting
– `show access-lists` – Lists configured ACLs.
– `show interface counters` – Displays interface statistics.
– `ping 8.8.8.8` – Tests connectivity to Google DNS.
– `traceroute 8.8.8.8` – Traces the path to a destination.
You Should Know:
Essential NX-OS Debugging & Verification
- Verify Port Security:
show port-security interface ethernet 1/1
- Check MAC Address Table:
show mac address-table
- Test SSH Connectivity:
ssh [email protected]
- Capture Packets (SPAN):
monitor session 1 destination interface ethernet 1/10
- Check CPU & Memory Usage:
show processes cpu sorted show system resources
What Undercode Say
Cisco NX-OS remains a powerful platform for network administrators, especially in data center environments. Mastering these commands ensures efficient network management, troubleshooting, and security enforcement. For deeper automation, consider integrating Python scripts with NX-API for scalable operations.
Expected Output:
Switch show version Cisco Nexus Operating System (NX-OS) Software Version: 9.3(5) ... Switch show interface ethernet 1/1 Ethernet1/1 is up Hardware: 1000/10000 Ethernet, address: 0000.1111.2222 MTU 1500 bytes, BW 10000000 Kbit ...
For more details, refer to Cisco’s official documentation:
References:
Reported By: Https: – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
