What is span in Nexus?

What is span in Nexus?

The Cisco Nexus 5000 Series switch supports the switched port analyzer (SPAN) feature, which allows an administrator to analyze all traffic between ports by nonintrusively directing the SPAN session traffic to a SPAN destination port that has an external analyzer attached to it.

What is spanning tree port type normal?

spanning-tree port type (default global) Configures all switch interfaces as edge/network/normal ports. These ports can be connected to any type of device. The no form of the command disables the spanning tree operation.

How do I find the port channel on a Cisco Nexus switch?

Use the command, show port-channel summary, to verify the number of port-channels already configured. You can have a maximum of 256 port channels on the Cisco Nexus 1000V. Use this procedure to force the physical interface to take on the characteristics of the port channel.

What command on the Nexus device is used to create a span session?

The SPAN session is configured using the command monitor session session-number, under which the source interface is specified with the command source interface interface-id [rx|tx|both].

What are the spanning tree port states?

There are five Spanning Tree Port States :

• Blocking State : Switch port enters the blocking state at time of election process, when a switch receives a BPDU on a port that indicates a better path to the Root Switch or if a port is not a Root Port.
• Listening State :
• Learning State :
• Forwarding State :
• Disabled State :

What is port channel in Nexus?

A port channel is an aggregation of multiple physical interfaces that creates a logical interface. You can bundle up to 32 individual active links into a port channel to provide increased bandwidth and redundancy. Port channeling also load balances traffic across these physical interfaces.

What are the 4 states of the Spanning Tree Protocol?

STP Port States Blocking – When a device is connected, the port will first enter the blocking state. Listening -The switch will listen for and send BPDUs. Learning – The switch will receive a superior BPDU, will stop sending its own BPDUs, and will relay the superior BPDUs. Forwarding – The port is forwarding traffic.

What is STP root port?

Root port: The root port on an STP device has the smallest path cost to the root bridge and is responsible for forwarding data to the root bridge. Among all STP-capable ports on a device, the port with the smallest root path cost is a root port.

What is spanning-tree port edge?

Interfaces configured as spanning tree edge ports immediately transition to the forwarding state, without passing through the blocking or learning states, on linkup. This command has four states: spanning-tree port type edge—This command explicitly enables edge behavior on the access port.

What does spanning tree PortFast do?

Portfast feature causes a switch port to enter the spanning tree forwarding state immediately, bypassing the listening and learning states.

Are SPAN ports bidirectional?

By definition, a SPAN Port usually indicates the ability to copy traffic from any or all data ports to a single unused port but also usually disallows bidirectional traffic on that port to protect against backflow of traffic into the network.