Changing Port config on Cisco C3650-24TS Layer 3 switch

[openfield2010]

Presume this is just a very quick question and very simple to do when you know how to do it.

Have a C3650 Layer 3 switch as the main core switch on our network.  Plugged into Port 20 on it is a very old POE access switch that is connected through a fibre converter and i'm looking at replacing that switch with a new one.  I've plugged the new switch into Port 1 on the Layer 3 but port 1 has an old config against it that needs changing to get it working.

Port 20 config

interface GigabitEthernet1/0/20
 description link-to-OP-ACCESS-SW-Weigh-BR
 switchport access vlan 14
 switchport mode trunk
 speed 100
 duplex full
 auto qos trust
 service-policy input AutoQos-4.0-Trust-Cos-Input-Policy
 service-policy output AutoQos-4.0-Output-Policy

Port 1 config currently

interface GigabitEthernet1/0/1
 description CUCM Publisher
 switchport access vlan 15
 switchport mode access
 auto qos trust
 service-policy input AutoQos-4.0-Trust-Cos-Input-Policy
 service-policy output AutoQos-4.0-Output-Policy

What's the simplest way of copying the config from Port 20 to Port 1? 

edit: Just an additional, the new switch is full 1GB so the speed 100 needs removing and it needs both VLAN13 and VLAN14 on it as the Access VLANs.

[willwetherman · Accepted solution]

The simplest way is to remove the config from port 1 using the 'default interface GigabitEthernet1/0/1' command and then enter the new port configuration. As there are variations to the configuration then there is no point copying the incorrect config from port 20 to port 1 Try the below

default interface GigabitEthernet1/0/1 

!

interface GigabitEthernet1/0/1

 description link-to-OP-ACCESS-SW-Weigh-BR

 switchport mode trunk

 switchport trunk allowed vlans 13,14

 auto qos trust

[openfield2010]

Thank you, not sure what i've done wrong but it said it defaulted the port and changed the settings but they're still not changed at all when doing a show config.  Am i missing something?

OP-CORE-SW-01-CO#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
OP-CORE-SW-01-CO(config)#default interface GigabitEthernet 1/0/1
Interface GigabitEthernet1/0/1 set to default configuration
OP-CORE-SW-01-CO(config)#end

OP-CORE-SW-01-CO#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
OP-CORE-SW-01-CO(config)#interface Gigb abu it                 interface GigabitEthernet1/0/1
OP-CORE-SW-01-CO(config-if)#description Link-To-WeighBridge
OP-CORE-SW-01-CO(config-if)#switchport mode trunk

OP-CORE-SW-01-CO(config-if)#switchport trunk allowed vlans 13,14
OP-CORE-SW-01-CO(config-if)#auto qos trust
OP-CORE-SW-01-CO(config-if)#end
OP-CORE-SW-01-CO#e end

[willwetherman]

Hi,

Can you post the output of the following:

OP-CORE-SW-01-CO# show run interface GigabitEthernet1/0/1

Thanks,

Will

[openfield2010]

Did it a second time and it now is working perfectly.  Thank you.

[Deepak Kumar · Accepted solution]

Please perform two task:

1. remove the config from port 1 using the 'default interface GigabitEthernet1/0/1' command and

2. Past the new port configuration as below

default interface GigabitEthernet1/0/1 

!

interface GigabitEthernet1/0/1

 description link-to-OP-ACCESS-SW-Weigh-BR

 switchport mode trunk

 auto qos trust

I am not giving command "Switchport trunk allowed VLAN X,X,X" because I am not aware of your network and VLAN configurations, which you required on the new switch. Lets allowed communication for all VLAN.

Regards,

Deepak Kumar