Interfaces going into "suspend mode" when adding vlans allowed

[iamtonythompson]

I couple of times I neglect to see that a physical interface is part of a port channel while adding a "vlan allowed" to a trunk interface. This causes the interface to go down into suspend mode after a few seconds, as the "vlan allowed" command needs to be added to the port-channel, not a physical interface member of that port channel. Question: How difficult would it be for the IOS to inform the administrator to add the command to the port channel, not the physical member as a fail safe, or just not allow the command in the interface stanza if it is a port channel member?

[Kasun Bandara · Accepted solution]

@iamtonythompson hi, its really good to discuss this. this is very common thing i saw for between many engineers.

you can suggest as a feature enhancement to the cisco team for this. 

[iamtonythompson]

How would I go about making that suggestion to the Cisco Team as a feature enhancement? As I also would suggest having more than a 10 command "history" in IOS as well.