![]() ![]() Traffic can be monitored in the receive direction, the transmit direction, or both directions for Ethernet and virtual Ethernet source interfaces. When a VLAN is specified as a SPAN source, all supported interfaces in the VLAN are SPAN sources. ![]() These include Ethernet, virtual Ethernet, port-channel, and VLAN. The interfaces from which traffic can be monitored are called SPAN sources. ![]() This section includes the following topics: SPAN lets you monitor traffic on one or more ports, or one or more VLANs, and send the monitored traffic to one or more destination ports where the network analyzer is attached. The Switched Port Analyzer (SPAN) feature (sometimes called port mirroring or port monitoring) allows network traffic to be analyzed by a network analyzer such as a Cisco SwitchProbe or other Remote Monitoring (RMON) probe. Feature History for SPAN and ERSPAN Information About SPAN and ERSPAN.This chapter describes how to configure the Local and ER Ethernet switched port analyzer (SPAN) feature to monitor traffic and includes the following topics: ![]()
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