neighbor update-source 
	 
 
   
  Configures the BGP device to communicate with a neighbor through a specified interface. 
  
 Syntax
 
	  
		neighbor 
		 
		  { 
		  ip-address 
		  | 
		  ipv6-address 
		  | 
		  peer-group-name 
		  } 
		  update-source 
		  { 
		  ip-address 
		  | 
		  ethernet 
		  slot 
		  / 
		  port 
		  | 
		  loopback 
		   
		  num| 
		  ve-interface 
		   vlan_id 
		  } 
		 
	 
 
	  
		no neighbor 
		 
		  { 
		  ip-address 
		  | 
		  ipv6-address 
		  | 
		  peer-group-name 
		  } 
		  update-source 
		  { 
		  ip-address 
		  | 
		  ethernet 
		  slot 
		  / 
		  port 
		  | 
		  loopback 
		   
		  num| 
		  ve-interface 
		   vlan_id 
		  } 
		 
	 
  
	 Command Default
 
		Disabled. 
		
 
	 
	 Parameters
 
		 
		   
			 -  
				 
				  ip-address 
				 
			 
- IPv4 address of the neighbor 
			 
-  
				 
				  ipv6-address 
				 
			 
- IPv6 address of the neighbor 
			 
-  
				 
				  peer-group-name 
				 
			 
- Peer group name configured by the 
				neighbor peer-group-name command. 
			 
-  
				 
				  ip-address 
			 
-  IP address of the update source. 
			 
-  
				 
				  ethernet 
				 
			 
- Specifies an ethernet interface. 
				 
				   
					 - slot 
					 
- Specifies a valid
									slot number. For devices that do not support line cards, specify
										0.
- port 
					 
- Specifies a valid port number. 
					 
 
-  
				 
				  loopback 
				  num 
				 
			 
- Specifies a loopback interface. 
			 
-  
				 
				  ve-interface 
				  vlan_id 
				 
			 
- Specifies a virtual Ethernet VLAN interface. 
			 
Modes
 
		BGP configuration mode 
		
 
		 BGP address-family IPv4 unicast VRF configuration mode 
		
 
		 BGP address-family IPv6 unicast VRF configuration mode 
		
 
	 
 
	 Usage Guidelines
 
		 Use the 
		  no form of the command to restore the defaults. 
		
 
	 
 Examples
 
	  
		 The following example configures the device to communicate with a neighbor through the specified IPv4 address and Ethernet interface 3/2. 
		
 
		device#configure terminal
device#(config)# router bgp
device(config-bgp-router)# neighbor 10.11.12.13 update-source ethernet 3/2