We are Unable to configure Vlan and Trunk allow vlan commands on Cisco SG - 300

[asif.mo01]

Hi All,

Please Help Us.

We are using   Cisco SG - 300 / 28 port switch

We are configure Vlan and Trunk allow Management vlan commands on switch , but not showing on running config ,and interface .

This are commands using :

EX : Int range gigabitethernet23- 24

switchport mode trunk

switchport trunk allowed vlan add all

no sh

and 

Management Vlan :

int vlan 22

name DATA

ip address  10.x.x.x 255.255.255.0 10.X.X.1 

Switch Version 

SW version 1.3.0.62 ( date 02-May-2013 time 14:55:01 )
Boot version 1.1.0.6 ( date 11-May-2011 time 18:31:00 )
HW version V03

[nagasheshu2010]

Hi Asif,

May be you need to define trunk encapsulation method.

Please check.

If possible, please paste output of show interface <interface name> switchport

Sheshu.

[nagasheshu2010]

Asif,

Looks like I misread your question - Can you tell me if you are not able to configure vlan and allow that vlan in trunk interface.

or you are able to configure all these and they are not showing up in running configuration?

Sheshu.

[asif.mo01]

Hi Nagasheshu,

We have configured  20 to 30 cisco sg-300 switch with the same configuration  commands ! 

it is working fine , but issue come with  2 switch only ,

configured on switch but not showing on interface and sh run configuration  !

EX : Int range gigabitethernet23- 24

switchport mode trunk

switchport trunk allowed vlan add all

no sh

and 

Management Vlan :

int vlan 22

name DATA

ip address  10.x.x.x 255.255.255.0 10.X.X.1 

[nagasheshu2010]

if possible, can you please paste the configuration from victim switch?

show interfaces configuration

show interfaces switchport <interface>

show interfaces status

show running-config.