nerdexam
Huawei

H12-891_V1.0 · Question #167

On VTEP1, the information shown in the figure is displayed through the command. Which of the following descriptions is correct?

The correct answer is D. The route carries both MAC information and host IP information. Option D is correct because the route shown is an EVPN Type 2 (MAC/IP Advertisement) route, which is specifically designed to carry both a MAC address and an associated host IP address together. This is the core function of Type 2 routes in EVPN - binding Layer 2 MAC…

Data Center Network Technologies

Question

On VTEP1, the information shown in the figure is displayed through the command. Which of the following descriptions is correct?

Exhibit

H12-891_V1.0 question #167 exhibit

Options

  • AThis route will definitely carry L3 VNI information when it is advertised to the outside world.
  • BThis is an EVPN Type 5 route
  • CThis is an EVPN Type3 route
  • DThe route carries both MAC information and host IP information.

How the community answered

(29 responses)
  • A
    3% (1)
  • B
    14% (4)
  • C
    7% (2)
  • D
    76% (22)

Explanation

Option D is correct because the route shown is an EVPN Type 2 (MAC/IP Advertisement) route, which is specifically designed to carry both a MAC address and an associated host IP address together. This is the core function of Type 2 routes in EVPN - binding Layer 2 MAC information to Layer 3 host IP information for distributed routing and bridging across VXLAN fabrics.

Why the distractors are wrong:

  • A is wrong because L3 VNI is only included in Type 2 advertisements when symmetric IRB is configured and a host IP is present - it is not guaranteed ("definitely") in all cases.
  • B is wrong because Type 5 is the IP Prefix Route, used to advertise IP prefixes (subnets) for inter-subnet routing - it carries no MAC information.
  • C is wrong because Type 3 is the Inclusive Multicast Ethernet Tag (IMET) Route, used to signal BUM (Broadcast, Unknown unicast, Multicast) tunnel membership - it carries neither MAC nor host IP.

Memory tip: Use the phrase "Type 2 = Two things = MAC + IP" to remember that Type 2 is the only EVPN route type that bundles both a MAC address and a host IP in a single advertisement. Types 3 and 5 are "one-dimensional" - multicast signaling and IP prefixes only, respectively.

Topics

#EVPN Route Types#VXLAN#MAC/IP Advertisement#VTEP

Community Discussion

No community discussion yet for this question.

Full H12-891_V1.0 Practice