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New Member

how i can check port speed

I have 3750 switch and connected to my all edge switches through fibre cable.  I want to know that the link between 3750 and edge switch 2960 is gigabit link, how i can check that gigabit link is ok.

i was check some cisco command its shows speed=auto.

but when i connected 4 server directly to 3750, so i can't feel that link is gigabit link.  can you tell me how i can trace about this link is gigabit or 100MB.

about cisco command i was check

show interface <port no> status

show interface <port no> capabilities and other also.

Note:  i need to do forcely command on interface port for gigabit link like = speed 1000

rightnow is speed=auto.

6 REPLIES
New Member

Re: how i can check port speed

Dear mrsysengineer,

It depends on Server ethernet port. If you keep switch interface in auto speed mode and Server Eth is in 100 Mb mode than port will work with 100 Mb speed. If Server Eth port is 1000Mb than Switch port will work with speed 1000Mb.

You can check this using sh int   or sh int status.

So fisrst check you Server ethernet LAN setting.

Hope this will help you.

Rate the post if it will help you.

Regards,

Hall of Fame Super Gold

Re: how i can check port speed

how i can check that gigabit link is ok

Can you elaborate?  Do you want to see Layer 1/Layer 2 status?  Do you want to see if there are line errors?  Do you want to see if you've got Gig ports are correctly connected?

Cisco Employee

Re: how i can check port speed

Hello,

If you issue "show interface . This will also give you some ideas about any errors you might see on the interface.

Hope this helps.

Regards,

NT

Re: how i can check port speed

I have 3750 switch and connected to my all edge switches through fibre cable.  I want to know that the link between 3750 and edge switch 2960 is gigabit link, how i can check that gigabit link is ok.

i was check some cisco command its shows speed=auto.

but when i connected 4 server directly to 3750, so i can't feel that link is gigabit link.  can you tell me how i can trace about this link is gigabit or 100MB.

about cisco command i was check

show interface status

show interface capabilities and other also.

Note:  i need to do forcely command on interface port for gigabit link like = speed 1000

rightnow is speed=auto.

Hi,

In order to check the speed and duplex setting of an interface on switch is

show int gig 0/12 it will show the detail of the interface with duplex setting and spped negotitaed with the peer end device.

In order to configure speed and duplex setting in interface following is the procedure

conft>int gig 0/12

conf-if>speed 1000

conf-if>duplex full

Hope to Help !!

Ganesh.H

Remember to rate the helpful post

New Member

Re: how i can check port speed

Hi check with the

#show interfaces status

command.

Regards,
Thinakaraj.M

New Member

Re: how i can check port speed

Form the below command out put will give you the details about the link speed like Gi/1 & Fa5/1 and 
the status about the link connected err-disabled ….
And the duplex and speed will give you the current config details of the ports. 

full and auto means : 100Mbps or 1000Mbps in ethernet

The status : connected > the connection is ok.

and Type's media type's:


the media will give you the details about physical cable details.

BASE means it is baseband ethernet.

TX means twisted-pair cable, category 5 or above.

LX means fiber-opti cable.

SX means fiber-optic cable.

#show interfaces status

Port    Name               Status     Vlan       Duplex Speed Type

Gi1/1                      disabled   routed       full  1000 missing

Gi1/2                      notconnect 1            full  1000 unknown (4)

Fa5/1                      disabled   routed       auto  auto 10/100BaseTX

Fa5/2                      disabled   routed       auto  auto 10/100BaseTX

Fa5/3                      disabled   routed       auto  auto 10/100BaseTX

Fa5/4                      disabled   routed       auto  auto 10/100BaseTX

Fa5/5                      disabled   routed       auto  auto 10/100BaseTX

Fa5/6                      connected  10         a-full a-100 10/100BaseTX

Fa5/7                      connected  10         a-full a-100 10/100BaseTX

Fa5/8                      connected  200        a-half a-100 10/100BaseTX

Fa5/9                      connected  trunk      a-full a-100 10/100BaseTX

Fa5/10                     disabled   routed       auto  auto 10/100BaseTX

Fa5/11                     disabled   routed       auto  auto 10/100BaseTX

Fa5/12                     disabled   routed       auto  auto 10/100BaseTX

Fa5/13                     disabled   routed       auto  auto 10/100BaseTX

Fa5/14                     disabled   routed       auto  auto 10/100BaseTX

Fa5/15                     disabled   routed       auto  auto 10/100BaseTX

Fa5/16                     disabled   routed       auto  auto 10/100BaseTX

Fa5/17                     disabled   routed       auto  auto 10/100BaseTX


The below comand will give you the err-disabled interface only.

#show interfaces status err-disabled 

Port    Name               Status       Reason
Fa9/4                      notconnect   link-flap



if you need more info plz provide me #sh ver

out put.



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