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Why is Pc2 Able to Ping Pc1, But the Rouge Laptop is Not?

Last Updated on September 11, 2022 by Climent Rick

If you’ve ever wondered why your computer can communicate with some devices on your network but not others, you’re not alone. The answer has to do with the way that different types of devices are assigned IP addresses. Pc2 is able to ping Pc1 because they are both part of the same subnet, which means they have been assigned similar IP addresses.

The rogue laptop is not able to ping Pc1 because it is part of a different subnet and has been assigned a different IP address.

Packet Tracer – Configuring Switch Port Security Instructions – CCNA 2 – Chapter 2

If you’re troubleshooting a network issue and you find that one computer can ping another but a third cannot, there are a few potential causes to check. In this scenario, let’s say computer A (PC1) can ping computer B (PC2), but computer C (the rogue laptop) cannot. One possibility is that the rogue laptop is not on the same network as the other two computers.

This could be because it’s using a different subnet mask or default gateway. Check the IP settings on the laptop and make sure they match the rest of the network. Another possibility is that there is an issue with the physical connection between the rogue laptop and the network.

If it’s plugged into a switch or router, try unplugging and replugging it in to see if that clears up the problem. Alternatively, try plugging it into a different port on the same device. If neither of those solutions works, it’s possible that there is some sort of security setting preventing pings from reaching the rogue laptop.

For instance, Windows Firewall might be configured to block ICMP traffic. Try temporarily disabling any firewall software on both PC1 and PC2 to see if that allows pings to get through from PC1 to PC2 and from PC2 to C (the rogue laptop).

11.6.1 Packet Tracer

Packet Tracer is a powerful network simulation program that allows users to create and configure virtual networks. The software is designed to help students learn how to design, configure, and troubleshoot network devices such as routers and switches. Packet Tracer can also be used to simulate real-world networking scenarios, such as managing traffic on a busy network or troubleshooting a downed link.

Packet Tracer is available for free from Cisco’s website. The software runs on Windows, Linux, and Mac OS X. Packet Tracer features a simple, intuitive interface that makes it easy to get started with network simulations. The software includes a library of pre-built objects, such as routers, switches, PCs, and servers, that can be dragged and dropped into place to create a virtual network.

Once the virtual network has been created, users can then begin configuring the devices within it. Packet Tracer provides a wide range of options for configuring router and switch settings. For example, users can specify the IP addresses that are assigned to each device, the routing protocols that are used by the devices, and the security policies that are applied to the network.

Users can also add custom objects to the simulation environment, such as firewalls or load balancers.

Which Command Will Enable Port-Security

If you’re looking to enable port-security on a Cisco device, there are a few different commands you can use. The first is “switchport port-security”, which will enable port-security on the specified port. You can also use “switchport port-security maximum” to set the maximum number of MAC addresses that can be learned by the port, and “switchport port-security violation” to configure what action should be taken when a violation occurs.

Switchport Port-Security Mac-Address Sticky

If you’re looking to increase the security of your network, one way to do so is to enable port security on your switch ports. Port security can be used to restrict which devices are allowed to access a particular port, and one way to do this is by configuring the port to only allow MAC addresses that have been specifically configured. This is known as MAC address sticky learning.

When MAC address sticky learning is enabled, the switch will learn the MAC addresses of the devices that are connected to each port. These MAC addresses will then be stored in the switch’s CAM table. Once the CAM table has been populated, only devices with MAC addresses that are in the table will be allowed to access the port.

If a device with an unknown MAC address attempts to access the port, the switch will drop the packet. Enabling MAC address sticky learning is a good way to increase security on your network.

Packet Tracer – Troubleshooting Switch Port Security

If you’re a network administrator, then you’re probably familiar with Packet Tracer. It’s a powerful tool that can help you troubleshoot networking issues. But what if you’re having trouble with switch port security?

There are a few things you can do to troubleshoot switch port security issues. First, make sure that the ports are configured correctly. If they’re not, then the problem could be with the switches themselves.

Next, check the logs to see if there are any suspicious activity. Finally, try resetting the port security settings and see if that fixes the problem. If you’re still having trouble, then it’s time to contact Cisco support.

They can help you figure out what’s going on and how to fix it. Packet Tracer Configuring Switch Port Security

In this Packet Tracer activity, you will configure switch port security and explore the secured and unsecured modes of operation. You will also examine the impact of MAC address limitation on port security. Switch port security is a feature that can be used to restrict access to a network by limiting the number of MAC addresses that are allowed to communicate with a particular switch port.

When port security is enabled, the switch will learn the MAC addresses of devices that are connected to that port. Once the maximum number of MAC addresses has been reached, no new devices will be able to connect. There are two main modes of operation for switch port security: secured mode and unsecured mode.

In secured mode, only devices with MAC addresses that have been specifically configured are allowed to communicate with the switch port. In unsecured mode, any device with a valid MAC address is allowed to communicate with the switch port. The maximum number of MAC addresses that can be configured for eachswitchportis determined by the hardware capabilitiesof thoseswitchports .

For example, some switches may only support up to eightMACaddresses perport , while others may support up tomillions . When configuringportsecurityon aswitch , you mayspecifythe maximumnumberofMACaddressesthatareallowedtolearnonthat specificswitchport .Youcanalsodecidewhetherthedeniedmodeorprotectmode actionistakenwhenastationwith anunknownMACaddressattemptstoaccessaswitchportthathasreacheditsmaximum limitforlearningMACaddresses .

Thedeniedmodewillpreventanytraffic fromunknowndevicesfromreachingtheprotectedswitchport ,whereastheprotectmode simplydropsanyincomingpacketsfromunknowndevicesandallowstraffic fromknowndevicestocontinue flowingnormally . To configure Switch Port Security in Packet Tracer: 1) Launch Packet Tracer and open a blank project.

2) Drag two PCs, one switch, and one router into your workspace. Connect each PC to its respective switch using an Ethernet cable. Then connect your router to your switches using Ethernet cables as well (see image below).

Why is Pc2 Able to Ping Pc1, But the Rouge Laptop is Not?
Why is Pc2 Able to Ping Pc1, But the Rouge Laptop is Not? 2


How Do I Enable Port Security on an Interface?

Port security is a data link layer (Layer 2) security feature that restricts input to an interface by MAC address. When port security is enabled on an interface, the interface checks incoming packets to see if they contain a source MAC address that is authorized for the port. If the source MAC address of a packet received on the port is not in the running configuration or in the access control list (ACL) for the port, and if strict mode has been configured, then the switch drops all packets from that host.

What are the Different Violation Modes?

Broadly speaking, there are two types of violation modes: those that result from a failure to comply with rules or expectations, and those that involve physical aggression or harm. The first category includes violations such as parking in a handicapped spot without a permit, while the second encompasses things like assault or vandalism. There are countless specific examples of each type of violation mode, but they can generally be grouped into four categories: social, moral, legal and physical.

Social violations are ones that damage or disrupt relationships between people, such as skipping out on a friend’s birthday party without letting them know ahead of time. Moral violations go against our sense of right and wrong; examples include lying or stealing. Legal violations are against the law, such as speeding or trespassing.

Finally, physical violations involve harming oneself or others; these can range from littering to murder. While some violation modes are more serious than others, all can have negative consequences for both the individual who commits them and those around them. It’s important to be aware of the different types so that we can try to avoid them in our own lives and work to create a world where everyone can live together harmoniously.

What Does Port Security Do?

Port security is a feature of many switches and routers that allows administrators to specify which MAC addresses are allowed to access the device through specific ports. This can be useful in preventing unauthorized devices from accessing the network or in isolating devices on different parts of the network.

What is Port Security on a Switch?

Port security is a feature on switches that allows administrators to specify which MAC addresses are allowed to access each port. This can be useful in preventing unauthorized devices from accessing the network or in isolating certain devices from each other. Port security can be configured using either static or dynamic MAC address assignment.

Static port security requires that the administrator manually configure which MAC addresses are allowed on each port. Dynamic port security automatically learns and updates the list of allowed MAC addresses as devices connect and disconnect from the switch.


If you’re troubleshooting a networking issue, one of the first things you’ll want to do is ping another computer on the network. Pinging is a basic networking utility that allows you to verify that a particular IP address exists and is responding. In this article, we’ll explain why pinging works and how it can help you troubleshoot network issues.

Pinging works by sending an ICMP Echo Request packet to an IP address and waiting for an ICMP Echo Reply. If the target IP address responds, then you know that it’s alive and that your connection to it is working. If the target doesn’t respond, then either it’s down or there’s something wrong with your connection.

In most cases, pinging another computer on your local network will work just fine. But if you’re trying to ping a computer on the Internet, there’s a good chance that it won’t respond because many routers block ICMP traffic for security reasons. So why is pinging PC2 able to ping PC1 but not the rogue laptop?

The most likely explanation is that the rogue laptop has its firewall configured to block ICMP traffic. By contrast, PC1 probably doesn’t have any firewall rules configured at all, which is why it’s able to accept pings from PC2.

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