====== 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' \\ ---- //[[al@nwalker.co.uk|Alan Walker]] 2019/12/02 11:30//