Packet Capture On Nexus 9k Updated Jun 2026

Troubleshooting protocols destined for the switch CPU (BGP, OSPF, ARP, CDP, LACP, SSH to the switch).

: Troubleshooting routing protocols (OSPF, BGP), management traffic (SSH, SNMP), and ARP. Basic Command : ethanalyzer local interface inband . packet capture on nexus 9k

When troubleshooting network issues on a Nexus 9000 switch, the go-to tool is . Unlike traditional IOS switches where you might rely on SPAN (Switched Port Analyzer) sessions to a sniffer, Nexus 9000 switches (running NX-OS) have a built-in Wireshark implementation that allows you to capture packets directly from the CPU or the data plane. Troubleshooting protocols destined for the switch CPU (BGP,

is a hardware feature of the ASIC. It allows you to capture a single packet (or a few packets) as they traverse the switch fabric. This is extremely low-level and powerful. When troubleshooting network issues on a Nexus 9000