In this scenario, which property is used for this purpose?

You manage an IP fabric with an EVPN-VXLAN overlay. You have multiple tenants separated using multiple unique VRF instances. You want to determine the routing information that belongs in each routing instance’s routing table.

In this scenario, which property is used for this purpose?
A . the VRF target community
B . the routing instance type
C . the VRF table label
D . the route distinguisher value

View Answer

Answer: D

Explanation:

Understanding VRF and Routing Instances:

In an EVPN-VXLAN overlay network, multiple tenants are separated using unique VRF (Virtual Routing and Forwarding) instances. Each VRF instance maintains its own routing table, allowing for isolated routing domains within the same network infrastructure. Role of Route Distinguisher:

Route Distinguisher (RD): The RD is a unique identifier used in MPLS and EVPN environments to distinguish routes belonging to different VRFs. The RD is prepended to the IP address in the route advertisement, ensuring that routes from different tenants remain unique even if they use the same IP address range.

Correct Property:

D. the route distinguisher value: This is the correct answer because the RD is crucial in determining which routing information belongs to which VRF instance. It ensures that each VRF’s routing table only contains relevant routes, maintaining isolation between tenants.

Data Center

Reference: The RD is a key element in MPLS and EVPN-based multi-tenant environments, ensuring proper routing segregation and isolation for different VRFs within the data center fabric.