On an MX Series device, you must enable routing between VLANs 100,200, and the Internet ge-5/1/0, and ge-5/1/2 are bundled into interface ae3. Ge-5/1/4, and ge-5/1/5 are bundles into interface ae2. Both AE bundles trunk VLANs 100 and 200.
In this scenario, what is the correct configuration snippet for VLAN 100?
A.
interfaces { 
xe-2/1/0 { 
unit 0{ 
family inter { 
address 10.0.10.2/24; 
}} 
} 
irb { 
unit 0{ 
family inet {address 10.0.1.2/24; 
}} 
unit 1 family inet { 
address 10.0.2.2/24; 
}}}} 
bridge-domains { 
vlan-100{ 
domain-type bridge; 
vlan-id 100; 
interface ge-2/2/2.100; 
interface ae1.100; 
interface ae3.100; 
routing-interface irb.0; 
}}
B.
interfaces { 
xe-2/1/0{ 
unit 0{ 
family inet { 
address 10.0.10.2/24; 
}}} 
ip-0/0/0{ 
unit 0{ 
family inet { 
address 10.0.1.2/24; 
}} 
unit 1{ 
family inet { 
address 10.0.2.2/24; 
}}}} 
bridge-domains { 
vlan-100{ 
domain-type bridge; 
vlan-id 100; 
interface ge-2/2/2.100; 
interface ae1.100; 
interface ae3.100; 
interface ip-0/0/0.0; 
}}
C.
interfaces { 
xe-2/1/0 { 
unit 0 { 
family inet { 
address 10.0.10.2/24; 
}}} 
irb { 
unit 0{family inet { 
address 10.0.1.2/24: 
}} 
unit 1 { 
family inet { 
address 10.0.2.2/24; 
}}}} 
bridge-domains { 
vlan-100{ 
domain-type bridge; 
vlan-id 100; 
interface ge-2/2/2.100; 
interface ae1.100; 
interface ae3.100; 
}}
D.
interfaces { 
xe-2/1/0 { 
unit 0{ 
family inet { 
address 10.0.10.2/24; 
}}} 
ip-0/0/0 { 
unit 0 { 
family inet { 
address 10.0.1.2/24; 
}} 
unit 1 { 
family inet { 
address 10.0.2.2/24; 
}}}} 
bridge-domains { 
vlan-100{ 
domain-type bridge; 
vlan-id 100; 
interface ge-2/2/2.100; 
interface xe-2/1/0.0; 
interface ae1.100; 
interface ae3.100 
interface ip-0/0/0.0; 
}}
 			
			
                

Answer should be A.
Irb.0 has to be added as a routing-interface for the bridge domain in order to enable routing.
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