Last Updated on August 2, 2021 by Admin 2
You are configuring port mirroring on a Cisco switch. You configure a VLAN as the source port. You configure a physical Ethernet port as the destination port.
Which of the following are you most likely configuring? (Choose two.)
Most likely, you are configuring Switched Port Analyzer (SPAN) and virtual local area network (VLAN)-based SPAN (VSPAN) if you enable port mirroring by configuring a VLAN as the source port and a physical Ethernet port as the destination port on the same Cisco switch. SPAN source and destination ports must be on the same device. SPAN is limited to monitoring traffic on only the local device and cannot direct traffic to destination ports on a separate device for analysis. The source port can be a physical or virtual Ethernet port, a port channel, or a VLAN if VSPAN is being used. The destination port can be a physical or virtual Ethernet port or a port channel. However, the source port and the destination port cannot be the same port. All ports in a source VLAN become SPAN source ports. SPAN, Remote SPAN (RSPAN), and Encapsulated RSPAN (ERSPAN) are all capable of using VLANs as sources by implementing VSPAN.
You are not configuring RSPAN in this scenario. RSPAN source and destination ports must be on the same local area network (LAN) but are not restricted to the same device. RSPAN enables you to monitor traffic on a network by capturing and sending traffic from a source port on one device to a destination port on a different device on a nonrouted network.
You are not configuring ERSPAN in this scenario. ERSPAN source and destination ports can exist in different LANs and are not typically configured on the same switch. ERSPAN enables an administrator to capture and analyze traffic across a routed network. Therefore, ERSPAN can monitor traffic across multiple routers on a network that spans multiple locations.
You are not configuring Roving Analysis Port (RAP) in this scenario. RAP is a form of port mirroring that is configured on 3Com switches, not on Cisco devices.