300-510 · Question #168
Refer to the exhibit. A network engineer is investigating a report of packet drops between the branch site and the central site. - The two sites are connected via OSPF and RSVP-TE tunnels. - Traffic f
The correct answer is C. R1(Config)# interface Ge0/0. The scenario describes asymmetric traffic: central-to-branch works normally, but branch-to-central drops packets. Loopback pings succeed in both directions, confirming OSPF adjacencies and L3 reachability are intact. The RSVP-TE tunnels (Tunnel333 on R2 for inbound traffic, Tunne
Question
Refer to the exhibit. A network engineer is investigating a report of packet drops between the branch site and the central site.
- The two sites are connected via OSPF and RSVP-TE tunnels.
- Traffic from the central site to the branch site is passing normally.
- Technicians at both sites successfully ping the loopback IP addresses
on routers R1 and R2. Which configuration corrects the packet-drop problem?
Exhibits
Options
- AR2(Config)# interface Tunnel333
- BR1(Config)# interface Tunnel222
- CR1(Config)# interface Ge0/0
- DR2(Config)# interface Ge0/0
How the community answered
(51 responses)- A6% (3)
- B8% (4)
- C84% (43)
- D2% (1)
Explanation
The scenario describes asymmetric traffic: central-to-branch works normally, but branch-to-central drops packets. Loopback pings succeed in both directions, confirming OSPF adjacencies and L3 reachability are intact. The RSVP-TE tunnels (Tunnel333 on R2 for inbound traffic, Tunnel222 on R1 for outbound) are also assumed functional since the reverse path works. The asymmetry points to a misconfiguration on R1's physical egress interface (Ge0/0). The most common cause in this scenario is a missing 'mpls ip' command or an MTU mismatch on R1's physical interface, which would cause MPLS-encapsulated packets from the branch to be dropped at the ingress point. Correcting the Ge0/0 interface configuration on R1 resolves the one-directional packet loss.
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