Design Guide
Note: The IEEE 802.1w protocol is enabled by default when running spanning tree in RPVST+ or MST mode on the Cisco Catalyst Blade Switch 3020. The Cisco Catalyst Blade Switch 3020 enables PVST+ for VLAN 1 by default.
The Spanning Tree Protocol uses the path cost value to determine the shortest distance to the root bridge. The port path cost value represents the media speed of the link and is configurable on a
Note: The Cisco Catalyst Blade Switch 3020 supports IEEE 802.1t, which allows for spanning- tree calculations based on a
For more information regarding spanning tree and Layer 2 design in the data center, visit: http://www.cisco.com/en/US/solutions/ns340/ns517/ns224/ns304/net_design_guidance0900aecd80 0e4d2e.pdf.
Traffic Monitoring
The Cisco Catalyst Blade Switch 3020 supports the following
●Switched Port Analyzer (SPAN)
●Remote SPAN (RSPAN)
SPAN mirrors traffic transmitted or received on source ports or source VLANs to another local switch port. This traffic can be analyzed by connecting a switch or Remote Monitoring (RMON) probe to the destination port of the mirrored traffic. Only traffic that enters or leaves source ports or source VLANs can be monitored using SPAN.
RSPAN facilitates remote monitoring of multiple switches across your network. The traffic for each RSPAN session is carried over a
Figure 5 illustrates the use of RSPAN in a
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