An organization plans to deploy a spine/leaf network topology to support a cloud design. Leaf switches will use layer-3 protocols to communicate with the spine switches. Hosts will each connect to two leaf switches using layer-2 protocols.
Which technology must be enabled between the host and leaf switches to provide the maximum throughput for a single data stream?
A . Generic Network Virtualization Encapsulation
B . Multi-Chassis Link Aggregation
C . Equal-Cost Multi-Path Routing
D . Spanning Tree Protocol
Answer: B
Explanation:
Page 161 Manual.
Link aggregation is a method of combining parallel physical links on a switch into a single virtual link, yielding a higher bandwidth than a single link could provide. This configuration allows for full use of physical links without detecting any loop condition. All the switch ports that are part of link aggregation must have the same port settings including speed and communication mode (duplex) except port name.
Combining multiple switches into a single logical switch may provide multiple active paths across switches. This mechanism is known as multi-chassis link aggregation (MLAG). While MLAG implementations may differ among vendors, where some manage switches as two distinct entities and others manage it as a single unit. The goal is to provide a mechanism to improve availability and performance.
By aggregating physical switches together into a single logical switch, it allows a network design with multiple active paths through different switches. This method not only prevents disruptions by avoiding convergence events, but it also provides alternate pathways under normal conditions to forward data, avoiding performance issues due to bottlenecks in the network.