Through the VMware NSX Manager user interface, the administrator has identified an issue with BGP peering. Which command on the NSX Edge Transport…

The get log-file routing follow command provides a real-time stream of logs from the routing daemons running on the NSX Edge Transport Node. This log file contains detailed information about routing protocol events, including BGP neighbor state transitions (e.g., Idle, Connect, Established), keepalive messages, and specific error notifications. When troubleshooting a BGP peering issue identified in the UI, this command offers the granular, real-time data necessary to diagnose the root cause, such as misconfigured AS numbers, authentication failures, or network connectivity problems.

A. get edge-cluster status: This command provides a high-level summary of the Edge cluster's health and configuration, not detailed BGP protocol logs.

B. get logical-routers: This command lists the logical router instances (Tier-0/Tier-1) on the Edge node, which is useful for context but does not provide troubleshooting logs.

C. get edge-cluster history state: This is not a standard command for diagnosing real-time BGP peering failures; it is not designed to provide protocol-level diagnostic information.

1. VMware NSX-T Data Center Command-Line Interface Reference, NSX-T 3.0, Page 101: The get log-file command is documented for displaying various system log files. The routing.log file is specified for routing component logs. The follow option is described as displaying new log messages as they are added, which is critical for live troubleshooting.

2. VMware NSX Data Center Troubleshooting Guide, NSX 4.1, "BGP Neighbor State is Not Established," Page 121: This section guides administrators on troubleshooting BGP issues. It explicitly recommends checking logs for detailed messages when BGP is not established, stating, "Check the BGP neighbor status and logs for detailed messages." The get log-file routing command is the primary method to access these logs on an Edge node.

3. VMware NSX-T Data Center Administration Guide, NSX-T 3.2, "NSX Edge CLI," Page 235: This guide details the use of the NSX Edge CLI for monitoring and troubleshooting. It lists get log-file as a key command for viewing logs related to specific services, including routing.