350-501 · Question #537
Refer to the exhibit. A network operations team is implementing eBGP on the service provider network. Data traffic between routers R1 and R4 must use the R2-R3 link, which connects AS 65101 and…
The correct answer is B. Add the ebgp-multihop command. Because R2 and R3 are peering eBGP over their loopback interfaces, you must enable ebgp- multihop so that the TTL isn’t limited to 1 hop. For example on R2: router bgp 65101 neighbor 10.0.0.6 remote-as 65201 neighbor 10.0.0.6 update-source Loopback0 neighbor 10.0.0.6…
Question
Refer to the exhibit. A network operations team is implementing eBGP on the service provider network. Data traffic between routers R1 and R4 must use the R2-R3 link, which connects AS 65101 and AS65201. iBGP sessions with adjacent routers are up on 10.10.10.1 and 10.10.10.4. The team is now updating the configuration for eBGP peers on routers R2 and R3. Which action must be taken to meet the requirements?
Exhibit
Options
- AAdd the soft-reconfiguration command.
- BAdd the ebgp-multihop command.
- CRemove the update-source command.
- DRemove the next-hop-self command.
How the community answered
(36 responses)- A8% (3)
- B72% (26)
- C14% (5)
- D6% (2)
Explanation
Because R2 and R3 are peering eBGP over their loopback interfaces, you must enable ebgp- multihop so that the TTL isn’t limited to 1 hop. For example on R2: router bgp 65101 neighbor 10.0.0.6 remote-as 65201 neighbor 10.0.0.6 update-source Loopback0 neighbor 10.0.0.6 ebgp-multihop 2 - and the mirror command on R3 - allowing the eBGP session to form over the indirect link.
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