I was asked to add a 3rd interface to that bundle, which will be Twe1/0/3. In terms of configuration, I will apply "stackwise-virtual link 1" under the Twe1/0/3 interface, just like i did in interfaces Twe1/0/1 and Twe1/0/2 in the past. My question is: Adding this 3rd interface to the bundle will require a reload in the switches ? Or will it flap the existing bundled interfaces (Twe1/0/1 and Twe1/0/2)? Just want to validate a possible impact for this activity. Thanks!