8480ch04.fm Draft Document for Review January 6, 2020 11:23 pm Figure 4-24 Initiating the merge operation We select CTLSOMRS and click NEXT. Note that the Current CTN ID is  CTN_Join . On the  next window we verify the result. If they meet expectations, we click on APPLY. The join  process is started and a progress pop-up is displayed (see Figure 4-24 on page 111). When the join process is finished another pop-up window appears which confirms the  successful execution (see Figure 4-25). CTLSOMRS is now the current CTN ID and  CTN_Join  does no longer exist. Figure 4-25 Successful join message Chapter 4. Managing STP configurations  111