Two companies, A and B, are connected as separate customers on an SRX5800 residing
on two virtual routers (VR-A and VR-B). These companies have recently been merged and
now operate under a common IT security policy. You have been asked to facilitate
communication between these VRs. Which two methods will accomplish this task? (Choose
two.)
A.
Use instance-import to share the routes between the two VRs.
B.
Create logical tunnel interfaces to interconnect the two VRs.
C.
Use a physical connection between VR-A and VR-B to interconnect them.
D.
Create a static route using the next-table action in both VRs.
instance-import and next-table deals only with sharing routes. this concept is unable to interconnect the routing instances. To achieve communication BETWEEN two VR, you need to use either logical tunnel or physical cable.
Correct answers are B and C
Hello Mike ,
You are partially correct , next-table with static-route can be used to route (provides communication) between two different VRs but it applies for only uni-directional applications , it can lead for looping so it is not preferred . B&C are correct.
Correct answers are A and D
Logical or physical connections between instances on the same Junos device and route between the connected
instances
Reference : http://kb.juniper.net/InfoCenter/index?page=content&id=KB21260
B and C is the right answer.
http://kb.juniper.net/InfoCenter/index?page=content&id=KB21260&actp=search
In addition to sharing routes between instances, you can also form logical or physical connections between instances on the same Junos device and route between the connected instances.
To connect two routing instances with a logical connection, configure a logical tunnel interface for each instance.
In addition to logical tunnel interfaces, you can also use physical interfaces to connect and route between routing instances. This implementation method typically requires two physical ports, one for each instance.
Other people are saying – A & D are ways used to shared routes between VR.
B,C if it was talking about Logical Systems (LSYS).