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Free 300-510 Exam Braindumps (page: 8)

Page 8 of 61
PDF with 240 Questions

DRAG DROP (Drag and Drop is not supported)
Drag and drop the attributes for the BGP route selection on the left into the correct order on the right. Not all options are used.

  1. See Explanation section for answer.

Answer(s): A

Explanation:


Reference:

https://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13753-25.html



Refer to the exhibit.


Refer to the exhibit. P1 and PE3 Cisco IOS XR routers are directly connected and have this configuration applied. The BGP session is not coming up. Assume that there is no IP reachability problem and both routers can open tcp port 179 to each other. Which action fixes the issue?

  1. Change HMAC-MD5 to HMAC-SHA1-20
  2. Configure the send and accept lifetime under key 1
  3. Change HMAC-MD5 to MD5
  4. Change HMAC-MD5 to HMAC-SHA1-12

Answer(s): B



Refer to the exhibit.


An engineer has successfully fixed BGP peering issue. R1 has an established eBGP
peering with R2 and R3. Which mechanism should the engineer apply in order to steer the traffic correctly?

  1. The MED attribute can be applied on R2 to influence R1 to use it as the primary path.
  2. The local preference attribute can be applied on R3 to influence AS 65513 to use AS 65515 as the secondary path.
  3. The weight attribute can be applied on R2 to influence AS 65513 to use AS 65515 as the primary path.
  4. The IGP metric can be manipulated on R1 to allow traffic to be load balanced between R2 and R3.

Answer(s): D

Explanation:

Some level of load balancing is achieved by default as BGP prefers shortest AS_PATH for certain prefix (Cisco BGP path selection algorithm - rule 4) . If 1-7 rules gives no preference for certain prefix then with rule 8. Prefer lowest IGP metric to BGP next hop we can force traffic to R2 or R3 influencing load distribution.



Refer to the exhibit.


Which attribute can router 1 alter so that only other iBGP peers prefer to use 192.168.4.2 as the next hop for route 192.168.3.0/24?

  1. MED
  2. local preference
  3. origin
  4. weight

Answer(s): A






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