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How to see nexus ethernet speed?

SubnetWarrior
Level 1
Level 1

Hi experts!

I run sh int ethx/x command to see port speed whether it is 1 gig or 10 gig. But i confused because it said "Hardware: 1000/10000 Ethernet" but it also said "full-duplex, 1000 Mb/s, media type is 1G". So it is 1 gig or 10 gig? The interface is connected to a server. Here is the sh int command ( i edited the sensitive part).

Ethernetx/x is up
admin state is up, Dedicated Interface
  Hardware: 1000/10000 Ethernet, address: xxx
  Description: xxx
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, medium is broadcast
  Port mode is access
  full-duplex, 1000 Mb/s, media type is 1G
  Beacon is turned off
  Auto-Negotiation is turned on
  Input flow-control is off, output flow-control is off
  Auto-mdix is turned on
  Rate mode is dedicated
  Switchport monitor is off 
  EtherType is 0x8100 
  EEE (efficient-ethernet) : n/a
  Last link flapped 367week(s) 1day(s)
  Last clearing of "show interface" counters 27w1d
  0 interface resets
  30 seconds input rate 10288 bits/sec, 1 packets/sec
  30 seconds output rate 5992 bits/sec, 4 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
    input rate 9.62 Kbps, 5 pps; output rate 4.97 Kbps, 9 pps
  RX
    99753068 unicast packets  0 multicast packets  0 broadcast packets
    99698228 input packets  21702029623 bytes
    0 jumbo packets  0 storm suppression packets
    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
    147333897 unicast packets  19450412 multicast packets  548680 broadcast packets
    167278149 output packets  12967764953 bytes
    0 jumbo packets
    0 output error  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble  0 output discard
    0 Tx pause


I also want to ask how to see the media type whether the interface can be inserted directly by utp or the interface have to use sfp. 

Thank you

4 Replies 4

ilay
VIP
VIP

"Hardware" show the nexus LineCard or Nexus switch supported speed in hardware layer.

" full-duplex, 1000 Mb/s, media type is 1G" display the port real speed.

as you show above , your switch hardware support 1G/10G and this port insert a 1G SFP module

By "show interface status" you can also view the Port Speed and Media Type

N9K-1# sh int e2/14
Ethernet2/14 is up
admin state is up, Dedicated Interface
  Belongs to Po24
  Hardware: 1000/10000 Ethernet, address: cccc.cccc.2621 (bia cccc.cccc.2621)
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, medium is broadcast
  Port mode is trunk
  full-duplex, 1000 Mb/s, media type is 1G  <-------
  Beacon is turned off
  
----- Omit part of the output----

N9K-1# sh int e2/15
Ethernet2/15 is up
admin state is up, Dedicated Interface
  Belongs to Po25
  Hardware: 1000/10000 Ethernet, address: cccc.cccc.2622 (bia cccc.cccc.2622)
  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, medium is broadcast
  Port mode is trunk
  full-duplex, 10 Gb/s, media type is 10G  <-------
  Beacon is turned off
  
----- Omit part of the output----

N9K-1# sh int e2/14 transceiver 
Ethernet2/14
    transceiver is present
    type is 1000base-SX
    name is CISCO-AVAGO     
    part number is SFBR-5766PZ-CS2 
    revision is     
    serial number is xxxxxxx25M     
    nominal bitrate is 1300 MBit/sec
    cisco id is --
    cisco extended id number is 4

N9K-1# sh int e2/15 transceiver 
Ethernet2/15
    transceiver is present
    type is 10Gbase-SR
    name is CISCO-AVAGO     
    part number is SFBR-709SMZ-CS1 
    revision is G4.1
    serial number is xxxxxxLBU     
    nominal bitrate is 10300 MBit/sec
    Link length supported for 50/125um OM2 fiber is 82 m
    Link length supported for 62.5/125um fiber is 26 m
    Link length supported for 50/125um OM3 fiber is 300 m
    cisco id is --
    cisco extended id number is 4

N9K-1#sh int status

--------------------------------------------------------------------------------
Port          Name               Status    Vlan      Duplex  Speed   Type
--------------------------------------------------------------------------------
mgmt0         --                 connected routed    full    100     --         
Eth1/1        --                 connected trunk     full    10G     10Gbase-SR 
Eth1/2        --                 connected trunk     full    10G     10Gbase-SR 

Hello sir, 

Thank you for your enlighment, if i may add another question, so i just show module in my nexus and find out that my ehternet 3 is 1/10 Gbps Ethernet Module, with the module is https://www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series-switches/data_sheet_c78-685394.html

Does it mean that the speed is depending on the transceiver? For example if i want to use 10 gig speed i just buy 10 gig transceiver, if i want 1 gig speed i just use 1 gig transceiver, is that correct?

Yes,you are right. real speed depends on the transceiver you used

Hello

sh interface x/x capabilities
will show you what media type/speed etc the interface supports

 


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Kind Regards
Paul
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