Cisco SFP and Port Commands

Dec 2019
I purchased some SFPs to go in to a Cisco 10GB switch, and found they did not work in my switch. While investigating the fault, I found some useful commands to help me.
These commands seem to work on both Cisco IOS and the Nexus switches, alebit with some slightly different syntax.

Show Inventory

Show Inventory - sh inventory displays information about the switch hardware options:

NAME: "Chassis", DESCR: "Nexus 3548 Chassis"
PID: N3K-C3548P-10G , VID: V02 , SN: FOC1822R0WS
NAME: "Module 1", DESCR: "48x10GE Supervisor"
PID: N3K-C3548P-10G , VID: V02 , SN: FOC18220S2A
NAME: "Fan 1", DESCR: "Chassis fan module"
PID: NXA-FAN-30CFM-F , VID: N/A , SN: N/A
NAME: "Fan 2", DESCR: "Chassis fan module"
PID: NXA-FAN-30CFM-F , VID: N/A , SN: N/A
NAME: "Fan 3", DESCR: "Chassis fan module"
PID: NXA-FAN-30CFM-F , VID: N/A , SN: N/A
NAME: "Fan 4", DESCR: "Chassis fan module"
PID: NXA-FAN-30CFM-F , VID: N/A , SN: N/A
NAME: "Power supply 1", DESCR: "AC power supply"
PID: N2200-PAC-400W , VID: V04 , SN: DTN1817P5GC
NAME: "Power supply 2", DESCR: "AC power supply"
PID: N2200-PAC-400W , VID: V04 , SN: DTN1817P5Q1

Show Interface

Show Interface displays detailed information about each interface. If you only issue the command sh interface (Nexus) (or sh interfaces for IOS) then you get information regarding all interfaces.
You can get information on a specific interface by using the Cisco syntax sh interface ethernet 1/1. In this example we get the information for port 1. Depending on your switch you might have to use ethernet or GigabitEthernet etc.

Ethernet1/1 is up
Dedicated Interface
Hardware: 100/1000/10000/40000 Ethernet, address: 88f0.31ca.b0c8 (bia 88f0.31c
a.b0c8)
MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA
Port mode is access
full-duplex, 10 Gb/s, media type is 10G
Beacon is turned off
Input flow-control is off, output flow-control is off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
Last link flapped 00:14:47
Last clearing of "show interface" counters never
5 interface resets
30 seconds input rate 24 bits/sec, 0 packets/sec
30 seconds output rate 296 bits/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 192 bps, 0 pps; output rate 360 bps, 0 pps
RX
0 unicast packets 115 multicast packets 34 broadcast packets
149 input packets 22045 bytes
0 jumbo packets 0 storm suppression bytes
0 runts 0 giants 0 CRC 0 no buffer
0 input error 0 short frame 0 overrun 0 underrun 0 ignored
0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop
0 input with dribble 0 input discard
0 Rx pause
TX
520 unicast packets 0 multicast packets 0 broadcast packets
520 output packets 49544 bytes
0 jumbo packets
0 output errors 0 collision 0 deferred 0 late collision
0 lost carrier 0 no carrier 0 babble 0 output discard
0 Tx pause

Show Interface Status

Show Interface Status will display a summary of interfaces and their status. Use either sh interface status to show all interfaces, or sh interface ehternet 1/1 status to show specific interface.

--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Eth1/1 -- connected 1 full 10G Unknown Typ
Eth1/2 -- sfpAbsent 1 full 10G --
Eth1/3 -- sfpAbsent 1 full 10G --
Eth1/4 -- sfpAbsent 1 full 10G --

Show Interface Transceiver Details

Show Interface Transceiver Details gives more specific information about the interface in a port. This is useful for SFPs, not so useful for fixed ethernet interfaces. Use: sh interface transceiver details .

Ethernet1/1
transceiver is present
type is Unknown Type-(unknown)
name is Amphenol
part number is 603830001
revision is N
serial number is APF13350017WFF
nominal bitrate is 10300 MBit/sec
Link length supported for copper is 1 m
cisco id is --
cisco extended id number is 4
DOM is not supported

Show Version

Show Version gives information regarding the hardware, software and BIOS version of the switch. Use: sh version

Cisco Nexus Operating System (NX-OS) Software
TAC support: http://www.cisco.com/tac
Documents: http://www.cisco.com/en/US/products/ps9372/tsd_products_support_serie
s_home.html
Copyright (c) 2002-2014, Cisco Systems, Inc. All rights reserved.
The copyrights to certain works contained herein are owned by
other third parties and are used and distributed under license.
Some parts of this software are covered under the GNU Public
License. A copy of the license is available at
http://www.gnu.org/licenses/gpl.html.
Software
BIOS: version 1.9.0
loader: version N/A
kickstart: version 6.0(2)A1(1d)
system: version 6.0(2)A1(1d)
Power Sequencer Firmware:
Module 1: version v3.1
BIOS compile time: 10/13/2012
kickstart image file is: bootflash:///n3500-uk9-kickstart.6.0.2.A1.1d.bin
kickstart compile time: 1/30/2014 9:00:00 [01/30/2014 18:31:05]
system image file is: bootflash:///n3500-uk9.6.0.2.A1.1d.bin
system compile time: 1/30/2014 9:00:00 [01/30/2014 19:39:25]
Hardware
cisco Nexus 3548 Chassis ("48x10GE Supervisor")
Intel(R) Pentium(R) CPU @ 1.50GHz
with 4117860 kB of memory.
Processor Board ID FOC18220S2A
Device name: switch
bootflash: 2007040 kB
Kernel uptime is 0 day(s), 4 hour(s), 23 minute(s), 57 second(s)
Last reset
Reason: Unknown
System version: 6.0(2)A1(1d)
Service:
plugin
Core Plugin, Ethernet Plugin

Alan Walker 2019/12/02 11:30