switchport commands question

[walthall2]

Hi, I've been asked to configure a switchport to match the one next to it.  easy enough right, except there seem to be some commands required that are not in the config.   Can you help?   Here are the 2 ports:

SWITCHA#sh run int fa5/10
Building configuration...

Current configuration : 290 bytes
!
interface FastEthernet5/10
 description Port 106
 switchport access vlan 111
 switchport voice vlan 107
 service-policy output autoqos-voip-policy
 qos trust cos
 no snmp trap link-status
 auto qos voip trust
 tx-queue 3
   bandwidth percent 33
   priority high
   shape percent 33
end

SWITCHA#sh run int fa5/11
Building configuration...

Current configuration : 290 bytes
!
interface FastEthernet5/11
 description Port 107
 switchport access vlan 111
 switchport voice vlan 107
 service-policy output autoqos-voip-policy
 qos trust cos
 no snmp trap link-status
 auto qos voip trust
 tx-queue 3
   bandwidth percent 33
   priority high
   shape percent 33
end

SWITCHA#sh int fa5/10 trunk

Port        Mode         Encapsulation  Status        Native vlan
Fa5/10      auto         negotiate      other         1

Port        Vlans allowed on trunk
Fa5/10      none

Port        Vlans allowed and active in management domain
Fa5/10      none

Port        Vlans in spanning tree forwarding state and not pruned
Fa5/10      none
SWITCHA#sh int fa5/11 trunk

Port        Mode         Encapsulation  Status        Native vlan
Fa5/11      auto         negotiate      not-trunking  1

Port        Vlans allowed on trunk
Fa5/11      107,111

Port        Vlans allowed and active in management domain
Fa5/11      107,111

Port        Vlans in spanning tree forwarding state and not pruned
Fa5/11      107,111

DON'T KNOW IF IT MAKES A DIFFERENCE, BUT ONE PORT IS UP AND THE OTHER IS NOT PLUGGED IN YET:

Fa5/10                         down           down     Port 106
Fa5/11                         up             up       Port 107
 

[Richard Burts]

I am puzzled about this question. In the beginning you say that you need to configure a port like another port on the switch but that some commands appear to be missing. But as I look at the two ports that you show they seem to be quite the same. What did I miss? What is not the same? What do you think is missing?

HTH

Rick

[walthall2]

Hi, Thanks for taking a look.  I guess my concern is that when I run this command:

SWITCHA#sh int fa5/10 trunk

on each interface, I get different results.  One says 2 VLANs are allowed. the other says none. So I would say they do not match in terms of functionality. The question is: what else do I need to do to get the ports to match?

[Richard Burts]

This does shed a different light on the question. In the original post and in my original response I focused on the configuration that was shown. And that shows interfaces  that appear to be configured as access ports - and the configuration is quite the same. Your follow up post focuses on the fact that negotiation for trunking is enabled on the switch and your question is really about the trunking aspect, which is not explicitly configured.

My guess at the explanation of the difference is that FA5/11 is up and has negotiated and has learned that two vlans are allowed while FA5/10 is not up, and so has not negotiated and has not yet learned what vlans are permitted on the trunk.

So my guess at what you need to do to get the ports to match would be that you need to connect FA5/10 similar to the connection of FA5/11.

HTH

Rick

[InayathUlla Sharieff]

Agree with Rick.

Kindly check what is connected to that port.

Do show int f5/10 >> does this shows as down down or up/up

And as Rick said remove the connected to port F5/11 and connect the same to F5/10 and see if the link comes up or not?

If link comes up then you dont have any issue with this box the other box which was connected to F5/10 is the culprit.

Regards

Inayath

[shawnhill]

I agree with Richard, other than the description they look pretty much the same.