A network engineer analyzing IPv6 packet captures and router header structures needs to map specific IPv6 header fields to their operational functions. Match each IPv6 header field on the left with its corresponding function on the right.
- Traffic ClassServes a function equivalent to the IPv4 Type of Service (ToS) field for Packet Classification and QoS marking.
- Next HeaderSpecifies the upper-layer payload protocol or indicates the presence of an extension header in the header chain.
- Flow LabelHelps routers maintain non-default path routing for real-time packet streams without needing to inspect inner packet headers.
- Hop LimitDecrements by one at each layer 3 forwarding node to prevent infinite routing loops, replacing the IPv4 TTL field.
Answer
Traffic Class maps to packet classification and QoS marking; Next Header specifies upper-layer protocols or extension headers; Flow Label identifies real-time packet streams without deep packet inspection; Hop Limit replaces TTL and decrements at each hop to prevent routing loops.
Traffic Class corresponds to QoS and DSCP marking (replacing IPv4 ToS); Next Header points to the payload protocol or extension header chain; Flow Label identifies packet streams to enable efficient handling without deep packet inspection; Hop Limit replaces IPv4 TTL to prevent looping packets.
Step-by-Step Solution
Key Concept
IPv6 Base Header Fields and Functions
Estimated Time:2m 0s