SPAN and RSPAN

SPAN and RSPAN

Use SPANSwitched Port ANalyzer) or RSPANRemote SPAN) to effectively analyze network traffic through ports or VLANs. With the help of SPAN or RSPAN, You can mirror a vswitch port to another vswitch port, that is, back up the sending traffic to another port of the vswitch or another vswitch, you only need to connect the analysis or listening device to the monitoring port to analyze and listen on the listening port. Because SPAN uses a copy or image) to receive or send traffic from the source port or the source VLAN, or both) to the target port, the network switching between the source port and the VLAN is not affected. In fact, the destination port does not receive or forward traffic except for the traffic required by the SPAN or RSPAN session.

Monitoring and Fault Identification of one or more vswitch ports without interrupting existing business traffic, thus facilitating fault isolation. The traffic information of a local port or VLAN is analyzed. SPAN sends a copy of traffic to the switch port connected to the security device.

Once SPAN, VSPAN, or RSPAN is enabled, STP of the target port is disabled, which may cause loops. Before configuring RSPAN, you must first define a dedicated rspan vlan. If the rspan vlan is configured on The vtp server, The vtp server automatically transmits the correct information to other intermediate switches. Otherwise, make sure that the vswitch on each platform has an rspan vlan.

Set the image on the Ethernet port

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The vswitch is of the Huawei s2000 series.

Vswitch Configuration

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IPS for linux 5.4 physical Nic bridging

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IP settings of Pc-B

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Ip Address Settings of Pc-

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Telnet

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Ftp

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Log on to ftp

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RSPAN

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Configure a user service type for pc-B as ftp

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LSPAN remote switch port Analysis

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Configure the Remote Image Source Port

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Configure remote-probe VLAN for the remote source Image Group

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Reflection Port

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Sw2 Switch configuration

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Sw1 Switch configuration

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Monitor ftp

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