Discover which type of traffic is marked as DSCP 46 in Cisco networks. Learn about the importance of DSCP markings for prioritizing voice, call signaling, IP routing, and mission-critical data traffic.
Table of Contents
Question
Which type of traffic is marked as DSCP 46?
A. voice
B. call signaling
C. IP routing
D. mission-critical data
Answer
A. voice
Explanation
In Cisco networks, Differentiated Services Code Point (DSCP) values are used to classify and prioritize different types of traffic. DSCP 46, also known as Expedited Forwarding (EF), is reserved for voice traffic.
Voice traffic, such as VoIP (Voice over IP) calls, requires low latency, low jitter, and minimal packet loss to maintain high-quality audio. By marking voice packets with DSCP 46, the network can identify and prioritize this traffic, ensuring that it receives the necessary Quality of Service (QoS) treatment.
Other types of traffic mentioned in the question have different DSCP markings:
- Call signaling traffic, such as Session Initiation Protocol (SIP) messages, is typically marked with DSCP 24 (CS3).
- IP routing traffic, such as Border Gateway Protocol (BGP) and Open Shortest Path First (OSPF) messages, is usually marked with DSCP 48 (CS6).
- Mission-critical data traffic may have various DSCP markings depending on the organization’s QoS policy, but it is not typically associated with DSCP 46.
In summary, DSCP 46 is specifically reserved for voice traffic in Cisco networks to ensure optimal performance and user experience during VoIP calls.
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