HCSP-Presales-Campus Network Planning and Design V2.0 Questions and Answers
Question 17
On a campus fabric network, which of the following methods can be used if VNs need to communicate with each other?
Options:
A.
Interconnection through edge nodes
B.
Interconnection through transparent nodes
C.
Interconnection through the border node where two VPN instances (VRF) import routes from each other
D.
Interconnection through the external network (such as a firewall) of the border node
Answer:
C, D
Explanation:
By default, Virtual Networks (VNs) are isolated from one another as they exist in separate VRFs. To enable inter-VN communication:
Internal Route Leaking (C): Routes are imported/exported between VRFs on the Border Node .
External Traffic Steering (D): Traffic is sent out of the Fabric through the Border Node to an external Firewall or Gateway , which then routes the traffic back into the second VN. This is the preferred method when security inspection between VNs (e.g., Guest VN to Office VN) is required.
Question 18
Distributed VXLAN gateways are recommended if VXLAN networking is required.
Options:
A.
True
B.
False
Answer:
A
Explanation:
In a Virtualized Campus Network (Fabric) , Huawei recommends Distributed Gateway deployment. In this model, the Layer 3 gateway functionality for a tenant is moved down to the Edge nodes (Access or Aggregation switches). This ensures that "East-West" traffic (communication between devices in the same subnet but on different switches) is routed locally at the edge, preventing traffic from having to travel up to a centralized core and back down, thus reducing latency and avoiding bottlenecks.
