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Exam 350-501 topic 1 question 318 discussion

Actual exam question from Cisco's 350-501
Question #: 318
Topic #: 1
[All 350-501 Questions]





Refer to the exhibit. A NOC engineer is configuring label-based forwarding from CSR to the EPC gateway. Cell-site operation and maintenance for IPv4 traffic between 10.20.10.1 and 192.168.10.10 is already up. CR1 and CR2 are configured as route reflectors for AG1 and AG2. Which action completes the configuration?

  • A. Remove address-family labeled-unicast from the BGP session-group infra on AG1 for neighbor-group core.
  • B. Apply the BGP_Egress_Filter route policy to the BGP neighbor-group packet core on AG1.
  • C. Configure AG1 to allocate a label to the BGP routes that are received in the BGP session group transport.
  • D. Configure AG1 to allow the 300:100 and 200:100 communities in the BGP_Egress_Filter route policy.
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Suggested Answer: B 🗳️
by Joejimikohn at Feb. 9, 2023, 7:01 a.m.

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sushil_bhattacharjee
3 months ago
Selected Answer: B
ommunity-set Allowed-Comm 300:100, 200:100, !!BGP Packet Core Community=300:100 !!BGP Agg Community=200:100 route-policy BGP_Egress_Filter if community matches-any Allowed-Comm then pass neighbor-group Packet-Core use session-group infra address-family ipv4 labeled-unicast route-reflector-client next-hop-self route-policy BGP_Egress_Filter both Answer: B
upvoted 1 times
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sushil_bhattacharjee
3 months ago
community-set Allowed-Comm 300:100, 200:100, !!BGP Packet Core Community=300:100 !!BGP Agg Community=200:100 route-policy BGP_Egress_Filter if community matches-any Allowed-Comm then pass neighbor-group Packet-Core use session-group infra address-family ipv4 labeled-unicast route-reflector-client next-hop-self route-policy BGP_Egress_Filter both Answer: B
upvoted 1 times
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thejag
1 year ago
Selected Answer: B
B looks good
upvoted 1 times
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Joejimikohn
1 year, 4 months ago
Selected Answer: C
I think C is correct
upvoted 1 times
Joejimikohn
1 year, 4 months ago
I was wrong B is correct.
upvoted 3 times
cocopost
2 months, 1 week ago
Why not C? Usually when we have BGP labeled unicast as we do here, we need the allocate-label command to ensure IPv4 prefixes are sent as BGP-LU not just BGP.
upvoted 1 times
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