Configuring SPAN and RSPAN

SPAN and RSPAN

configuration. If a configuration change is made to the port while it is acting as a SPAN destination port, the change does not take effect until the SPAN destination configuration had been removed.

Note When QoS is configured on the SPAN destination port, QoS takes effect immediately.

•If the port was in an EtherChannel group, it is removed from the group while it is a destination port. If it was a routed port, it is no longer a routed port.

•It can be any Ethernet physical port.

•It cannot be a secure port.

•It cannot be a source port.

•It cannot be an EtherChannel group or a VLAN.

•It can participate in only one SPAN session at a time (a destination port in one SPAN session cannot be a destination port for a second SPAN session).

•When it is active, incoming traffic is disabled. The port does not transmit any traffic except that required for the SPAN session. Incoming traffic is never learned or forwarded on a destination port.

•If ingress traffic forwarding is enabled for a network security device, the destination port forwards traffic at Layer 2.

•It does not participate in any of the Layer 2 protocols (STP, VTP, CDP, DTP, PagP).

•A destination port that belongs to a source VLAN of any SPAN session is excluded from the source list and is not monitored.

•The maximum number of destination ports in a switch or switch stack is 64.

Local SPAN and RSPAN destination ports function differently with VLAN tagging and encapsulation:

•For local SPAN, if the encapsulation replicate keywords are specified for the destination port, these packets appear with the original encapsulation (untagged, ISL, or IEEE 802.1Q). If these keywords are not specified, packets appear in the untagged format. Therefore, the output of a local SPAN session with encapsulation replicate enabled can contain a mixture of untagged, ISL, or IEEE 802.1Q-tagged packets.

•For RSPAN, the original VLAN ID is lost because it is overwritten by the RSPAN VLAN identification. Therefore, all packets appear on the destination port as untagged.

RSPAN VLAN

The RSPAN VLAN carries SPAN traffic between RSPAN source and destination sessions. RSPAN VLAN has these special characteristics:

•All traffic in the RSPAN VLAN is always flooded.

•No MAC address learning occurs on the RSPAN VLAN.

•RSPAN VLAN traffic only flows on trunk ports.

•RSPAN VLANs must be configured in VLAN configuration mode by using the remote-spanVLAN configuration mode command.

 

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Cisco Systems WSC2960X24PSL, WSC2960X24TDL, WSC2960X48TSL, WSC2960X24TSLL, WSC2960X24PDL, C2960XSTACK manual Rspan Vlan
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WSC2960X24TSL, C2960XSTACK, WSC2960X24PDL, WSC2960X24TSLL, WSC2960X24PSL specifications

Cisco Systems has long been a leader in networking technology, and its range of switching products exemplifies its commitment to high performance and reliability. Among its popular offerings are the Catalyst 2960-X and 2960-XR series switches, including models like WSC2960X48TSL, WSC2960XR48FPDI, WSC2960XR24TDI, and WSC2960XR48LPDI. These switches are designed to deliver efficient Layer 2 and Layer 3 capabilities, making them ideal for enterprise and small to medium-sized business networks.

The WSC2960X48TSL model boasts 48 Ethernet ports, providing ample connectivity for various devices. It supports Power over Ethernet (PoE), making it suitable for powering IP cameras, wireless access points, and VoIP phones. The switch also features Cisco’s Smart Operations technology, which simplifies network management and enhances user experience through automated features such as Cisco Auto Smartports and Auto QoS.

Turning to the WSC2960XR48FPDI, this version also features 48 ports but with enhanced redundancy and power capabilities, making it suitable for critical applications where uptime is paramount. This switch offers dual power supply options, ensuring that even in the event of a power failure, network operations continue seamlessly. Its Flexible NetFlow feature enables enhanced visibility and monitoring of traffic, allowing businesses to optimize their bandwidth usage and troubleshoot issues more efficiently.

The WSC2960XR24TDI model, with its 24 ports, is perfectly designed for networks with fewer devices yet still demands robust performance. It also includes advanced security features, such as IEEE 802.1X port-based authentication, enhancing the protection of sensitive data and communications within the network.

Lastly, the WSC2960XR48LPDI model is tailored for environments that require high availability and robust performance, featuring 48 ports along with Layer 3 static routing capabilities. With its support for IPv6 and advanced QoS features, this switch is prepared for the future of networking, accommodating the increasing demand for bandwidth and reliable connectivity.

All these switches utilize Cisco IOS software, providing a familiar interface for network administrators. They also incorporate advanced troubleshooting tools, like Cisco Prime, which facilitate effective network management. Collectively, the WSC2960 series switches represent a comprehensive solution for businesses seeking dependable, scalable, and manageable networking options. With their combination of performance, features, and reliability, these Cisco switches are essential for meeting the demands of modern networking.
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