A database administrator experiences delay when performing storage replication between primary and secondary data centers. The data centers are located 20 kilometers apart and are connected using a 500 Mbps link. The deployment was implemented using an FCIP tunnel and a pair of Cisco MDS 9250i Series Switches. The network engineer decided to enable QoS to prioritize replication traffic. Which QoS model must be used to resolve the performance issues?
Differentiated services is the correct QoS model to use in this scenario. Differentiated services, often referred to as DiffServ, allows for the classification and management of network traffic and can be used to prioritize storage replication traffic effectively. This ensures that high-priority traffic, such as storage replication, receives the necessary bandwidth and reduced latency.
Agree, answer is DiffServ
- DSCP is the answer. https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/sw/6_2/configuration/guides/ip_services/nx-os/ipsvc/cfcip.html
If the question in the exam is specifically asking for a "QoS Model" then it's DSCP and not strict priority queuing