What is Rspan port?

What is Rspan port?

The Remote Switched Port Analyzer (RSPAN) enables you to monitor traffic on one switch through a device on another switch and then send the monitored traffic to one or more destinations.

Is Rspan Cisco proprietary?

SPAN (Switched Port Analyzer) is a Cisco Proprietary feature which allows to send a copy of traffic passing through ports to another port on the switch.As demand on deep packet inspection and analysis grew , so did the development on SPAN and Cisco cam up with RSPAN and ERSPAN.

What is the advantage over switched port analyzer span feature?

It operates like SPAN except it gives you the advantage of 100% visibility, no dropped packets and no delay. Another way of increasing SPAN ports is to get a dedicated switch to send the SPAN traffic to; this dedicated switch will then give you the option of creating two more SPAN ports from the single SPAN source.

Can you span a trunk port?

When you monitor a trunk port as a source port, by default, all VLANs active on the trunk are monitored. You can limit SPAN traffic monitoring on trunk source ports to specific VLANs by using VLAN filtering.

What is SPAN session?

The SPAN sessions send a copy (mirror) of the traffic to another interface or VLAN on the switch that has been connected to a network analyzer or monitoring device. SPAN does not affect the switching of network traffic on the source interfaces.

What is SPAN VLAN?

A VLAN SPAN (VSPAN) configuration is a monitor session whose source is a VLAN rather than specific interfaces. When a VLAN is the source of a monitor session, all physical interfaces that are members of the VLAN are also sources.

What is Span and Rspan in networking?

When you use a destination interface on the same switch as your switch we call it SPAN, when the destination is a remote interface on another switch we call it RSPAN (Remote SPAN). When using RSPAN you need to use a VLAN for your RSPAN traffic so that traffic can travel from the source switch to the destination switch.

What is the benefit of implementing span?

The advantage of using a SPAN/mirror port is its cost, as a SPAN/mirror port is included for free with nearly every managed switch. A SPAN/mirror port is also remotely configurable, allowing you to change which ports are mirrored from the switch management console.

What is span port on Cisco switch?

Destination (SPAN) port: A port that monitors source ports. This is usually the point to which a network analyser is connected. Remote SPAN (RSPAN): When Source ports are not located on the same switch as the Destination port.

What is remote SPAN (RSPAN)?

Remote SPAN (RSPAN): An extension of SPAN called remote SPAN or RSPAN. RSPAN allows you to monitor traffic from source ports distributed over multiple switches, which means that you can centralize your network capture devices.

How does RSPAN work on Cisco switches?

Remote SPAN (RSPAN): RSPAN works by mirroring the traffic from the source ports of an RSPAN session onto a VLAN that is dedicated for the RSPAN session. This VLAN is then trunked to other switches, allowing the RSPAN session traffic to be transported across multiple switches.

What is the difference between span and local span?

SPAN mirrors traffic from one or more interface on the switch to one or more interfaces on the same switch; hence SPAN is mostly referred to as LOCAL SPAN. Both Layer 2 switched ports and Layer 3 ports can be configured as source or destination ports. The source can be either one or more ports or a VLAN, but not a mix of these.

What are the different types of span?

Types of SPAN: Local SPAN: Mirrors traffic from one or more interface on the switch to one or more interfaces on the same switch. Remote SPAN (RSPAN): An extension of SPAN called remote SPAN or RSPAN.