If you need to change the virtual IST PeerIp or VlanId, use this procedure to delete the vIST
first.
        
Note   
            
                - 
                    You must disable IS-IS globally before deleting a vIST, and then re-enable it
                        after creating a new vIST. 
- 
                    You do not have to set the SMLT peer system ID or the virtual BMAC to 0
                        before you change the virtual IST peer IP address or VLAN ID number.  
 
Procedure
- Disable IS-IS globally. 
                    
- 
                        In the navigation pane,
                            expand .
                    
- 
                        Select the Globals
                            tab.
                    
- 
                        In the AdminState field, select off.
                    
- 
                        Select Apply.
                    
 
- Delete the
vIST.
- 
                        In the navigation pane,
                            expand .
                    
- 
                        Select the Virtual
                                IST tab.
                    
- 
                        Select Apply.
                    
 
- Create a
vIST:
                    - 
                        In the navigation pane,
                            expand .
                    
- 
                        Select the Virtual IST tab.
                    
- In the PeerIp field,
enter the peer IP address.
- In the VlanId field,
enter a VLAN ID.
- 
                        Select Apply.
                    
 
- Enable IS-IS globally.
                    
- 
                        In the navigation pane,
                            expand .
                    
- 
                        Select the Globals
                            tab.
                    
- 
                        In the AdminState field, select on.
                    
- 
                        Select Apply.