350-501 · Question #538
Refer to the exhibit. Company A has two offices that communicate via a service provider in AS 65516. CE1 arid CE2 provide connections to the service provider from site 1 and site 2 respectively…
The correct answer is B. CE1(config)#router bgp 65514. Because both CE routers share AS 65514, routes learned via the SP (AS 65516) carry AS 65514 in their AS‑PATH and would be rejected as loops. Applying neighbor <PE-IP> allowas-in on the CE lets it accept prefixes that contain its own AS in the path, so CE1 can learn the Site 2…
Question
Exhibit
Options
- ACE2(config)#router bgp 65514
- BCE1(config)#router bgp 65514
- CPE2(config)#router bgp 65516
- DCE1(config)#router bgp 65514
How the community answered
(45 responses)- A18% (8)
- B71% (32)
- C7% (3)
- D4% (2)
Explanation
Because both CE routers share AS 65514, routes learned via the SP (AS 65516) carry AS 65514 in their AS‑PATH and would be rejected as loops. Applying neighbor <PE-IP> allowas-in on the CE lets it accept prefixes that contain its own AS in the path, so CE1 can learn the Site 2 routes (and likewise you would mirror it on CE2 for Site 1). CE1(config)# router bgp 65514 CE1(config-router)# neighbor 192.168.1.2 allowas-in
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