What is the purpose of the Forwarding Tag (FTAG) in Cisco ACI?
What is the purpose of the Forwarding Tag (FTAG) in Cisco ACI?
In Cisco ACI, FTAG trees are specifically used to load balance multi-destination traffic. This means that FTAGs help in efficiently distributing traffic that is meant for multiple destinations within the ACI fabric, such as broadcast, multicast, and unknown unicast traffic. Thus, it ensures better utilization of resources and avoids network congestion by balancing the load across multiple paths.
DRAG DROP -
A leaf receives unicast traffic that is destined to an unknown source, and spine proxy is enabled in the corresponding bridge domain. Drag and drop the Cisco ACI forwarding operations from the left into the order the operation occurs on the right.
Select and Place:
An engineer deployed a Cisco ACI fabric and noticed that the fabric learns endpoints from subnets that are not configured on a bridge domain. To meet strict security requirements, the engineer must prevent this behavior. Which action must be taken to prevent this behavior?
To prevent the Cisco ACI fabric from learning endpoints from subnets not configured on a bridge domain, enabling the 'Enforce Subnet Check' is necessary. This feature ensures that endpoints are only learned if they belong to the subnets specified in the bridge domain, thereby aligning with strict security requirements.
Refer to the exhibit. An engineer is configuring a vSwitch policy in the existing Cisco ACI fabric. The requirement is for the Cisco ACI leaf to learn individual MAC addresses from the same physical port. Which vSwitch policy configuration mode must be enabled to meet this requirement?
To meet the requirement for the Cisco ACI leaf to learn individual MAC addresses from the same physical port, MAC binding must be enabled on the vSwitch. This configuration mode allows the mapping of individual MAC addresses to specific ports, ensuring that the traffic is properly tagged and routed by the leaf switches. MAC pinning, LACP passive, and LACP active are related to link aggregation and port-channel establishment, which are not directly related to MAC address learning in this scenario.
A host that is connected to a Cisco ACI fabric leaf switch sends an ARP request. Which transmission method does the ingress switch use to send the ARP requests?
When a host connected to a switch sends an ARP request, it uses a broadcast method. ARP requests are designed to be sent to all devices within the same network segment in order to discover the MAC address associated with a specific IP address. This allows the requesting device to find out which host should receive its packets. Therefore, the correct transmission method for sending ARP requests is broadcast.