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Exam 350-501 topic 1 question 374 discussion

Actual exam question from Cisco's 350-501
Question #: 374
Topic #: 1
[All 350-501 Questions]



Refer to the exhibit. A service provider engineer is configuring the connection between CE1 and CE2. AS 200 of the service provider and AS 100 of enterprise ABC should connect using BGP. The engineer already completed the configuration of VRF RT 100:10 of enterprise ABC. Which configuration must the engineer apply on PE1 to meet the requirement?

  • A.
  • B.
  • C.
  • D.
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Suggested Answer: B 🗳️
by karen1337 at Oct. 18, 2023, 10:16 p.m.

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sushil_bhattacharjee
1 year, 2 months ago
Selected Answer: B
In the exhibit, the bgp neighbor from PE1-CE1 is already configured. Hence, it doesn't require it again. However, there is no VRF configuration. Hence, it requires configuring the VRF. vrf has to be IPv4 address family, not the VPNv4
upvoted 2 times
HARDCCNP
1 year, 1 month ago
The engineer already completed the configuration of VRF RT 100:10 of enterprise ABC 104 / 5.000 Resultados de tradução Resultado da tradução If this VRF is already configured, how are you applying a vrf with a different name to client ABC?
upvoted 2 times
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sushil_bhattacharjee
1 year, 2 months ago
In the exhibit, the bgp neighbor from PE1-CE1 is already configured. Hence, it doesn't require it again. However, there is no VRF configuration. Hence, it requires configuring the VRF. vrf has to be IPv4 address family, not the VPNv4
upvoted 2 times
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cerifyme85
1 year, 6 months ago
Selected Answer: B
Either way I will go for B. U do not need vpnv4 afi for neighborship U need ipv4 afi for neighborship Also need to define the RD for that specific route as it traverses the mpls core
upvoted 4 times
karen1337
1 year, 6 months ago
Yeah I think B has the least wrong with it. A and D seem to be configuring vpnv4 with the customer, which is wrong. C looks to be configuring the ipv4 afi with the other PE, which is wrong.
upvoted 2 times
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cerifyme85
1 year, 6 months ago
But Karen is right VRF is missing from output on PE1 BGP neighborship to CE1 and loopback is misleading.. however the principles of MPLS should still be in place
upvoted 2 times
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karen1337
1 year, 6 months ago
This question doesn't make any sense. PE1 and CE1 have the same loopback IP 10.10.10.1 If PE1 is configured with a neighbor statement to 10.10.10.1, it will not form a neighbor with CE1. Also, the neighbor config with CE1 needs to be under "router bgp 200 vrf vpnABC". Good luck if you see this question on your exam.
upvoted 2 times
cocopost
1 year ago
I do agree that the question is poorly designed. because the answer needs to specify vrf vpnABC. However, I don't think the duplicate 10.10.10.1 is a problem. CE1 address 10.10.10.1 is in the vrf vpnABC address space, which is allowed to overlap with the global address space. I hope I don't get this question on the exam. I agree that B has the least wrong with it, and the config needs a vrf Definition. Which Cisco platform requires that you specify an address family in the vrf? IOS doesnt. XR? XE? Answer B
upvoted 1 times
cocopost
10 months, 1 week ago
And nevertheless, Answer A is wrong because being in the vrf vpnABC address space, it should not use address-family vpnv4, (should be address-family ipv4 unicast).. I still support answer B because the config needs a vrf definition (and agree with Karen1337 that it should be called vpnABC). So many errors in these questions.
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C (25%)
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