What protected port?

The protected ports feature is a safety measure that prevents ports from forwarding traffic to each other, even if they are on the same VLAN. Each port is designated as either protected or unprotected. By default, all ports are unprotected.

Consequently, what is a protected port Cisco?

The protected port is a feature on Cisco Catalyst Switches that you can use to prevent interfaces from communicating with each other.

Additionally, what is private VLAN Cisco? Private VLAN, also known as port isolation, is a technique in computer networking where a VLAN contains switch ports that are restricted such that they can only communicate with a given "uplink". The restricted ports are called "private ports".

Simply so, what does Switchport protected do?

switchport protected is used to enforce privacy within a vlan the command prevents ports from talking to other ports configured with switchport protected . This command reduces flooding as a side-effect of using it on all ports in a Vlan, but it does much more than "just" remove flooding from a switchport.

How do you show port security?

To display the port security configuration on an interface, use the show port-security command.

21 Related Question Answers Found

Which device would you use to configure port security?

Configure port security on the switch. You've just enabled port security on an interface of a Catalyst 2950 switch. You want to generate an SNMP trap whenever a violation occurs.

How do I configure a switch?

How to configure Cisco switches – A step by step guide

1 Before We Begin: Know What Hardware You're Using and Download PuTTY.
2 Connect the Switch to PuTTY.
3 Enter Privileged EXEC Mode and Set a Hostname for the Switch.
4 Assign a Password to the Switch.
5 Configure Telnet and Console Access Passwords.
6 Configure IP Addresses With Telnet Access.

How do I configure a port on a switch?

Cisco Networking: Switch Interface Configuration

Connect to your switch and get into Configuration mode using a set of commands like the following:
Choose the interface by number.
Specify the interface number.
Set the specifics of the network connection or use the Auto settings for medium dependent interface crossover (MDIX), Duplex, and Speed settings.

Is a dynamic port?

dynamic port - Computer Definition

A port that can be used by any computer application program to communicate with any other application program running Transmission Control Protocol (TCP) or User Datagram Protocol (UDP), with no registration requirements. Dynamic ports are numbered from 49,152 through 65,535.

Why would you enable port security on a switch?

The main reason to use port security in a switch is to stop or prevent unauthorized users to access the LAN.

What is port security sticky?

Sticky MAC is a port security feature that dynamically learns MAC addresses on an interface and retains the MAC information in case the Mobility Access Switch reboots. Allowing the port to continuously learn MAC addresses is a security risk.

What is port security in networking?

Port security is a method of securing an interface by only allowing traffic from a specific set or number of MAC Address. If traffic from an invalid MAC is detected, it will be blocked or dropped. This is a low level form of security that can be used to prevent unwanted devices from being connected to the network.

What are three types of private VLAN domains?

There are three types of VLAN within a private VLAN:

Primary VLAN - it forwards the traffic from the promiscuous ports to isolated ports, community ports and other promiscuous ports in the same private VLAN.
Community VLAN - is a secondary VLAN.
Isolated VLAN - is a secondary VLAN.

How many types of VLANs are there?

Most VLANs will be one of five main types, depending on their purpose: Management VLAN: A best practice is to set up a separate VLAN for management traffic like monitoring, system logging, SNMP, and other potentially sensitive management tasks.

What is VLAN how it works?

Virtual Local Area Networks (VLANs) separate an existing physical network into multiple logical networks. Thus, each VLAN creates its own broadcast domain. Communication between two VLANs can only occur through a router that is connected to both. VLANs work as though they are created using independent switches.

Why do we need private VLANs?

Using private VLANs solves the scalability problem and provides IP address management benefits for service providers and Layer 2 security for customers. The private VLAN feature partitions the Layer 2 broadcast domain of a VLAN into subdomains.

What is VLAN IP address?

VLANs do not really have IP addresses assigned to them. They have a network assigned to them, or a subnet, or a network range, however you want to refer to it. The address the OP supplied us is an assignable address within the range of 192.168. 4.1-255.

What is a secure VLAN?

The default Ethernet VLAN is VLAN 1. It is a security best practice to configure all the ports on all switches to be associated with VLANs other than VLAN 1. This is usually done by configuring all unused ports to a black hole VLAN that is not used for anything on the network.

What is native VLAN?

Native VLAN is a dot 1Q concept that was created for backward compatibility with old devices that don't support VLANs . Frames belonging to the native VLAN are not tagged when sent out on the trunk links so older devices can simply understand. Frames received untagged on the trunk links are set to the native VLAN .

What is VLAN migration?

VLANs are required to enhance security and traffic control; to ease network adds, moves, and changes. In order to move this server onto a VLAN, we need to perform an IP migration. IP migration is the migration of servers between locations.

What is inter VLAN routing?

We define inter-VLAN routing as a process of forwarding network traffic from one VLAN to another VLAN using a router or layer 3 device. In the previous pages, we learned about how to configure VLANs on a network switch. There is a way to permit these computers to communicate; it is called inter-VLAN routing.