CISCO CCNA Exam – Q263

What are the three things that the Netflow uses to consider the traffic to be in a same flow? (Choose three)

A. IP address
B. Interface name
C. Port numbers
D. L3 protocol type
E. MAC address

Correct Answers: A, C, D

What is an IP Flow?

Each packet that is forwarded within a router or switch is examined for a set of IP packet attributes. These attributes are the IP packet identity or fingerprint of the packet and determine if the packet is unique or similar to other packets.

Traditionally, an IP Flow is based on a set of 5 and up to 7 IP packet attributes.

IP Packet attributes used by NetFlow:

+ IP source address
+ IP destination address
+ Source port
+ Destination port
+ Layer 3 protocol type
+ Class of Service
+ Router or switch interface