Troubleshooting Port Statistics From The Cli; Troubleshooting Port-Interface Issues; The Interface Configuration Has Disappeared - Cisco Nexus 9000 Series Troubleshooting Manual

Troubleshooting Ports
• show interface status
• show interface capabilities
• show udld
• show tech-support udld

Troubleshooting Port Statistics from the CLI

To display complete information for an interface, use the show interface command. In addition to the state
of the port, this command displays the following:
• Speed
• Trunk VLAN status
• Number of frames sent and received
• Transmission errors, including discards, errors, and invalid frames
switch# show interface ethernet 2/45
Ethernet2/45 is down (Administratively down)
Hardware is 10/100/1000 Ethernet, address is 0019.076c.4dd8 (bia 0019.076c.4dd8)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
Encapsulation ARPA
auto-duplex, auto-speed
Beacon is turned off
Auto-Negotiation is turned on
Input flow-control is off, output flow-control is off
Auto-mdix is turned on
Last clearing of "show interface" counters never
1 minute input rate 0 bytes/sec, 0 packets/sec
1 minute output rate 0 bytes/sec, 0 packets/sec
L3 Switched:
Rx
Tx
Receive data field Size is 2112

Troubleshooting Port-Interface Issues

The Interface Configuration Has Disappeared

You may have a problem where your interface configuration disappears.
reliability 255/255, txload 1/255, rxload 1/255
input: 0 pkts, 0 bytes - output: 0 pkts, 0 bytes
0 input packets 0 unicast packets 0 multicast packets
0 broadcast packets 0 jumbo packets 0 storm suppression packets
0 bytes
0 output packets 0 multicast packets
0 broadcast packets 0 jumbo packets
0 bytes
0 input error 0 short frame 0 watchdog
0 no buffer 0 runt 0 CRC 0 ecc
0 overrun 0 underrun 0 ignored 0 bad etype drop
0 bad proto drop 0 if down drop 0 input with dribble
0 output error 0 collision 0 deferred
0 late collision 0 lost carrier 0 no carrier
0 babble
0 Rx pause 0 Tx pause 0 reset

Troubleshooting Port Statistics from the CLI

Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
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