[c-nsp] Switchport trunk allowed issues

[amir agha]

Hi
I am writing a EEM using Cisco ios cli, can anyone have valuable suggestion about how to materialize it. Following is the topic
Using following command on switch i.e
 
 switchport trunk allowed vlan <add/remove/all/except/none> <range>

However, if one forgets to include the <add/remove/all/except/none> keyword, the command defaults to replace:

switchport trunk allowed vlan <range>
 
the VLAN that has already been placed on vlan deleted and result in downtime

I would like to disable the use of: "switchport trunk allowed vlan <range>", 
 
and replace it with a custom EEM command like: 
 
	1. switchport trunk allowed vlan none.
	2. switchport trunk allowed vlan add <add> <range>
	3. switchport trunk allowed vlan add <remove> <range>
This would correct a dangerous IOS syntax.
 
Looking forward
Ami
Norway