cisco_sfp_and_port_commands
Table of Contents
Cisco SFP and Port Commands
Dec 2019
Updated Apr 2021
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.
sh int status Port Name Status Vlan Duplex Speed Type Gi1/0/1 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/2 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/3 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/4 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/5 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/6 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/7 connected 10 a-full a-1000 10/100/1000BaseTX Gi1/0/8 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/9 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/10 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/11 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/12 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/13 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/14 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/15 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/16 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/17 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/18 notconnect 10 auto auto 10/100/1000BaseTX Gi1/0/19 connected 20 a-full a-1000 10/100/1000BaseTX Gi1/0/20 connected 20 a-full a-1000 10/100/1000BaseTX Gi1/0/21 connected 20 a-full a-1000 10/100/1000BaseTX Gi1/0/22 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/23 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/24 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/25 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/26 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/27 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/28 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/29 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/30 notconnect 20 auto auto 10/100/1000BaseTX Gi1/0/31 notconnect 30 auto auto 10/100/1000BaseTX Gi1/0/32 connected 30 a-full a-1000 10/100/1000BaseTX Gi1/0/33 connected 30 a-full a-1000 10/100/1000BaseTX Gi1/0/34 connected 30 a-full a-1000 10/100/1000BaseTX Gi1/0/35 connected 30 a-full a-1000 10/100/1000BaseTX Gi1/0/36 connected 30 a-full a-1000 10/100/1000BaseTX Gi1/0/37 notconnect 30 auto auto 10/100/1000BaseTX Gi1/0/38 notconnect 30 auto auto 10/100/1000BaseTX Gi1/0/39 notconnect 30 auto auto 10/100/1000BaseTX Gi1/0/40 notconnect 30 auto auto 10/100/1000BaseTX Gi1/0/41 notconnect 40 auto auto 10/100/1000BaseTX Gi1/0/42 connected 40 a-full a-1000 10/100/1000BaseTX Gi1/0/43 connected 40 a-full a-1000 10/100/1000BaseTX Gi1/0/44 connected 40 a-full a-1000 10/100/1000BaseTX Gi1/0/45 notconnect 40 auto auto 10/100/1000BaseTX Gi1/0/46 notconnect 40 auto auto 10/100/1000BaseTX Gi1/0/47 notconnect 40 auto auto 10/100/1000BaseTX Gi1/0/48 notconnect 40 auto auto 10/100/1000BaseTX
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
sh mac address-table interface x
Shows the mac table for a particular interface.
sh mac address-table interface gigabitEthernet 1/0/1
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
10 001d.aa16.a730 DYNAMIC Gi1/0/1
10 001d.aa1c.7b7c DYNAMIC Gi1/0/1
10 00e0.f42c.0bce DYNAMIC Gi1/0/1
10 1059.3202.e4c5 DYNAMIC Gi1/0/1
10 1059.3202.e5ae DYNAMIC Gi1/0/1
10 30ab.6a3a.11b6 DYNAMIC Gi1/0/1
10 3822.e2b6.3385 DYNAMIC Gi1/0/1
10 3ca8.2a07.a6dc DYNAMIC Gi1/0/1
10 3cd9.2b54.cd94 DYNAMIC Gi1/0/1
10 4016.7ea4.6f21 DYNAMIC Gi1/0/1
10 408d.5c1e.76bb DYNAMIC Gi1/0/1
10 7054.d2c5.08a5 DYNAMIC Gi1/0/1
10 7085.c2b4.51ad DYNAMIC Gi1/0/1
10 7898.e8f9.7ed0 DYNAMIC Gi1/0/1
10 b8a3.866a.4ad0 DYNAMIC Gi1/0/1
10 b8ac.6f2c.cf44 DYNAMIC Gi1/0/1
10 dca6.32e0.7e97 DYNAMIC Gi1/0/1
10 e89d.8709.d630 DYNAMIC Gi1/0/1
10 ecb1.d74a.441d DYNAMIC Gi1/0/1
Total Mac Addresses for this criterion: 19
interface down/up
To set a Cisco interface down or up we use the 'shutdown' command. 'shutdown' takes down the interface, 'no shutdown' brings it back up.
To bring down or up and interface, you must first select the interface, then issue the shutdown command.
interface gigabitEthernet 1/0/48
shutdown
LINK-5-CHANGED: Interface GigabitEthernet1/0/48, changed state to administratively down
exit
Switch#show interfaces gigabitEthernet 1/0/48
GigabitEthernet1/0/48 is administratively down, line protocol is down (disabled)
Hardware is Gigabit Ethernet, address is d0ec.3549.1530 (bia d0ec.3549.1530)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
In the above example, we shutdown interface 48 on a Cisco, we then exit back up so we can run the 'show' command to check the status of the interface. Below we will bring the interface back up.
interface gigabitEthernet 1/0/48
no shutdown
exit
Interface GigabitEthernet1/0/48, changed state to down
exit
show interfaces gigabitEthernet 1/0/48
GigabitEthernet1/0/48 is down, line protocol is down (notconnect)
Hardware is Gigabit Ethernet, address is d0ec.3549.1530 (bia d0ec.3549.1530)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto-speed, media type is 10/100/1000BaseTX
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
Notice that the message says 'interface is down' this just means nothing is plugged in, in the first example where we actually shutdown the interface it states that the interface is 'administratively down'
Alan Walker 2019/12/02 11:30
cisco_sfp_and_port_commands.txt · Last modified: 2023/03/09 22:35 by 127.0.0.1