What is motd banner?
A banner is a message presented to a user who is using the Cisco switch. MOTD banner: When users connect to the router, the “Message Of The Day (MOTD)” banner is presented. Login banner: The login banner is displayed right before the authentication prompt.
How do I get out of banner motd?
To remove the banner or MOTD, use the no form of the command. and the MOTD configuration, use the no banner-motd command without any keywords and arguments. The system-defined banner is displayed. of the day.
How do I bring up a Cisco interface?
To bring the interface up, use the no shutdown command under interface configuration mode.
Do show running-config?
Show running-config: To display the configuration information currently running on the terminal, use the show running-config EXEC command. This command replaces the write terminal command. Syntax Description: This command has no arguments or keywords.
What is copy running config startup config?
Copy running-config startup-config or copy run start command copies the current active configuration to NVRAM. Erase startup-config will enable you to completely delete all configurations on the router so that you can start from scratch. Type this command to delete the configuration file in NVRAM.
Why do we configure switch with an IP address?
If you want to be able to manage your switch remotely over the network, your switch needs an IP address. If your switch has multiple VLANs configured, and you want to be able to manage the switch from each VLAN, the switch requires an IP address on a VLAN interface in each VLAN.
How do I disable port security?
To disable port security aging for all secure addresses on a port, use the no switchport port-security aging time interface configuration command.
What is port security aging?
Another option that is available when configuring switchport security is the use of an aging timer. This provides for a MAC address to be removed from being learned after a configured amount of time. Absolute—When using this method, secure MAC addresses are deleted after a specific aging time expires.
What is Switchport port security?
Overview. The switchport security feature (Port Security) is an important piece of the network switch security puzzle; it provides the ability to limit what addresses will be allowed to send traffic on individual switchports within the switched network.
How do I check my port security violations?
Here is a useful command to check your port security configuration. Use show port-security interface to see the port security details per interface. You can see the violation mode is shutdown and that the last violation was caused by MAC address 0090.
What is a sticky MAC address?
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.
How do I configure my Switchport security?
Configuration Steps: 1) Your switch interface must be L2 as “port security” is configure on an access interface. You can make your L3 switch port to an access interface by using the “switchport” command. 2) Then you need to enable port security by using the “switchport port-security” command.
What are the port security violation modes?
You can configure the port for one of three violation modes: protect, restrict, or shutdown. See the “Configuring Port Security” section on page 62-5. To ensure that an attached device has the full bandwidth of the port, set the maximum number of addresses to one and configure the MAC address of the attached device.
What are the three types of port security?
On Cisco equipment there are three different main violation types: shutdown, protect, and restrict.
What does Switchport port security MAC address sticky do?
To enable sticky learning, enter the switchport port-security mac-address sticky command. When you enter this command, the interface converts all the dynamic secure MAC addresses, including those that were dynamically learned before sticky learning was enabled, to sticky secure MAC addresses.
What causes port security violation?
A security violation occurs when the maximum number of MAC addresses has been reached and a new device, whose MAC address is not in the address table attempts to connect to the interface or when a learned MAC address on an interface is seen on another secure interface in the same VLAN.
What is the importance of port security?
Port security is vital because marine transport is a very thriving and extensively used form of conveyance, especially for cargo transportation. Since the cargo containers could be used inappropriately, it becomes important that proper monitoring and inspection of the transferred cargo is carried out.
Why port security is important?
Port security refers to the port and maritime domain. It includes important activities necessary for counteracting terrorism, enforcing specific laws and ensuring that all treaties are properly enforced and adhered to.
Which subcommand overrides the default action to take upon a security violation?
4. (Optional) Use the switchport port-security violation {protect | restrict | shutdown} interface subcommand to override the default action to take upon a security violation (shutdown).
Which of the following is a difference between Telnet and SSH as supported by a Cisco switch?
Which of the following is a difference between Telnet and SSH as supported by a Cisco switch? a. SSH encrypts the passwords used at login, but not other traffic; Telnet encrypts nothing. SSH provides a secure remote login option, encrypting all data flows, including password exchanges.
Which of the following will disable autonegotiation for an interface on a Cisco switch?
Cisco switches do not have a command to disable autonegotiation of speed and duplex. Instead, a switch port that has both speed and duplex configured disables autonegotiation.
How does Cisco switch detect auto-negotiation?
The switches that run Cisco IOS Software (as opposed to CatOS) default to auto-negotiation for speed and are set to on for the duplex. Issue the show interface slot/port status command to verify this.
What is auto-negotiation in networking?
Auto-negotiation is the ability of a network interface to automatically coordinate its own connection parameters (speed and duplex) with another network interface. In cases where that condition is unacceptable, you should manually set the network interface settings to a correct configuration.
What is duplex auto Cisco?
By default, Cisco switches will auto-negotiate the speed and duplex settings. When you connect a device (either a switch, router, or a workstation) to a port on a Cisco switch, the negotiation process will occur and the devices will agree on the transmission parameters.
What speed and duplex should I use?
If the speed is 10 or 100 Mbps, use half duplex. If the speed is 1,000 Mbps or faster, use full duplex.