Refer to the exhibit. An engineer analyzes the packet flow in a Cisco UCS domain that consists of Cisco UCS Fabric Interconnects. The engineer discovers that the virtual machine traffic goes through Cisco Fabric Interconnect B, but the traffic is expected to go through Cisco Fabric Interconnect A. Which action resolves the issue?
Answer(s): B
The issue is that traffic is expected to go through Cisco Fabric Interconnect A (FI-A), but it is going through FI-B instead. When you check the MAC address table on both fabric interconnects, you see that VLAN 10 is present on FI-B but not on FI-A. This indicates that VLAN 10 is not allowed or not configured on FI-A, which is why the traffic is being forwarded through FI-B.To resolve this issue, you need to allow VLAN 10 on FI-A, so that traffic can flow through the correct path (FI-A) as expected.
Refer to the exhibit. A network engineer configured Cisco Nexus 9000 Series Switches to allow the traffic between 172.16.10.10/24 to 172.18.3.100/24 to pass through the 100G-link, but it fails. SW3 and SW4 are configured with the default OSPF configurations. Which configuration on SW1 resolves the issue?
Answer(s): C
The issue here is related to OSPF cost. OSPF chooses the path with the lowest cost, and the cost is determined by the bandwidth of the link. By default, OSPF will prefer lower-cost paths for routing decisions.In the provided scenario, you want the traffic to pass through the 100G-link (between SW3 and SW4). To achieve this, you must adjust the OSPF cost on the lower-bandwidth links (such as the 10G-links) so that OSPF prefers the 100G-link.Setting the OSPF cost to 1 on interface eth1/1 (which connects to SW3 on a 100G-link) will make the 100G-link more favorable in OSPF path selection, as it will have a lower cost compared to the other links, ensuring that traffic flows through this link.
Refer to the exhibit. A Cisco UCS B-Series server 1/1 fails to communicate with server 1/2. Which action resolves the issue?
The issue is that server 1/1 (VLAN 10) is unable to communicate with server 1/2, which is also in VLAN 10. In the provided topology, it appears that the link on Eth1/11 is missing the VLAN 10 configuration, which is necessary for communication between the servers.VLAN 10 must be allowed on all links (including Eth1/11) to ensure proper communication between the servers, as they both belong to VLAN 10. Adding VLAN 10 to Eth1/11 will resolve the communication issue.
Refer to the exhibit. The receiver is listening to multicast group 239.200.0.1, but no packets are received for the requested multicast group. Which action resolves the issue?
In this scenario, port-security is configured on both interfaces, but the violation action on Eth1/2 is set to shutdown, which disables the interface when a violation occurs. Since the multicast traffic is likely causing a port security violation, the interface is shutting down, preventing the receiver from receiving the multicast traffic.Changing the port-security violation action to restrict on Eth1/2 will allow the interface to remain up while still restricting unauthorized MAC addresses, thus resolving the issue and enabling multicast traffic to flow to the receiver.
Refer to the exhibit. A BGP VXLAN EVPN Is used in a data center. The Eth1/1 fails on SPINE-1, and traffic flow fails from Leaf-1 to the Leaf-2 VTEP over port channel 12 in VLAN 7. Which command resolves the issue?
Answer(s): A
In a BGP VXLAN EVPN fabric, when one of the interfaces (like Eth1/1 on Spine-1) fails, it can cause traffic disruptions if the necessary configuration isn't in place to handle gateway redundancy across VTEPs.The peer-gateway command enables redundancy for the default gateway on both VTEPs (Leaf-1 and Leaf-2) in an active-active manner, allowing them to forward packets for each other's MAC addresses. This feature is essential in ensuring traffic can still flow even when one spine link fails. By configuring peer-gateway, you can resolve the traffic issue by allowing traffic to flow through the other available links.
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