How to configure Remote SPAN (Switched Port Analyzer ) in GNS3 скачать в хорошем качестве

How to configure Remote SPAN (Switched Port Analyzer ) in GNS3

Remote SPAN, or RSPAN, is a feature provided by network switches that enables the monitoring and capturing of network traffic from a remote switch or switches. RSPAN allows network administrators to capture traffic from multiple switches in different locations and forward it to a central monitoring station for analysis. Unlike local SPAN, where the monitored traffic is copied and forwarded to a designated SPAN port on the same switch, RSPAN extends the monitoring capability beyond a single switch. It achieves this by encapsulating the captured traffic in specialized RSPAN VLANs (Virtual Local Area Networks) and transmitting it over the existing network infrastructure to a designated RSPAN destination port located on a different switch. Here's a simplified overview of how RSPAN works: The source switches are configured to identify the desired source ports or VLANs from which the traffic needs to be monitored. A dedicated RSPAN VLAN is created on each source switch, and the identified source ports or VLANs are associated with this VLAN. The RSPAN VLANs are extended across the network to the destination switch using trunk ports or dedicated VLAN trunks. On the destination switch, a specific RSPAN VLAN is assigned to the RSPAN destination port, where the captured traffic will be forwarded. The destination switch receives the encapsulated traffic from the source switches via the RSPAN VLANs and forwards it to the RSPAN destination port. The captured traffic can then be analyzed using monitoring tools connected to the RSPAN destination port. RSPAN enables network administrators to monitor and analyze network traffic from multiple switches in different locations, which is particularly useful in larger network infrastructures or distributed environments.