Troubleshooting Ports; About Troubleshooting Ports; Guidelines And Limitations For Troubleshooting Ports - Cisco Nexus 9000 Series Troubleshooting Manual

Troubleshooting Ports

This chapter contains the following sections:
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About Troubleshooting Ports

Before a device can relay frames from one data link to another, the characteristics of the interfaces through
which the frames are received and sent must be defined. The configured interfaces can be Ethernet interfaces,
VLAN interfaces (SVIs), or the management interface (mgmt0).
Each interface has an associated administrative configuration and operational status as follows:
• The administrative configuration does not change unless you modify it. This configuration has various
• The operational status represents the current status of a specified attribute such as the interface speed.
For a complete description of port modes, administrative states, and operational states, see the Cisco Nexus
9000 Series NX-OS Interfaces Configuration Guide.

Guidelines and Limitations for Troubleshooting Ports

Follow these guidelines when you configure a port interface:
About Troubleshooting Ports, page 37
Guidelines and Limitations for Troubleshooting Ports, page 37
Initial Port Troubleshooting Checklist, page 38
Viewing Port Information, page 38
Troubleshooting Port Statistics from the CLI, page 39
Troubleshooting Port-Interface Issues, page 39
attributes that you can configure in administrative mode.
This status cannot be changed and is read-only. Some values may not be valid when the interface is
down (such as the operation speed).
C H A P T E R
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
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