Cisco 200-125 Exam

Which feature can you use to monitor traffic on a switch by replicating it to another port or ports on the same switch?

  • A. copy run start
  • B. traceroute
  • C. the ICMP Echo IP SLA
  • D. SPAN
Answer: Option D.
Explanation: 

A source port, also called a monitored port, is a switched or routed port that you monitor for network traffic analysis. In a single local SPAN session or RSPAN source session, you can monitor source port traffic, such as received (Rx), transmitted (Tx), or bidirectional (both). The switch supports any number of source ports (up to the maximum number of available ports on the switch) and any number of source VLANs.
A source port has these characteristics:
It can be any port type, such as EtherChannel, Fast Ethernet, Gigabit Ethernet, and so forth.
It can be monitored in multiple SPAN sessions.
It cannot be a destination port.
Each source port can be configured with a direction (ingress, egress, or both) to monitor. For EtherChannel sources, the monitored direction applies to all physical ports in the group. Source ports can be in the same or different VLANs. For VLAN SPAN sources, all active ports in the source VLAN are included as source ports.

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