Dogs jumping up on people can be a common problem, but it's one that can be easily corrected with the right training. Here are a few tips to help stop your dog from jumping up on people:

1.Teach the "Sit" command: Teaching your dog to sit on command is a great way to stop them from jumping up on people. Every time your dog jumps up, simply say "Sit" and guide them into the sitting position. With consistent training, your dog will learn to associate the command with the behavior you want.

2.Reward good behavior: When your dog does not jump up, reward them with treats or praise. This will help to reinforce the behavior you want.

3.Use a leash: When training your dog to not jump up, use a leash to help control their behavior. This will give you more control over your dog and make it easier to correct them when they jump up.

4.Ignore unwanted behavior: Ignoring your dog when they jump up on people will help them learn that this behavior is not rewarded. Instead, wait until they sit and then give them praise or a treat.

5.Train "Off" command: Teaching a “Off” command is also useful, you can use it when your dog jumps on people or furniture, this way you can redirect your dog's behavior and discourage jumping up.

6.Socialize your dog: Proper socialization is important for dogs of all ages. Teaching your dog how to interact with people and other dogs in a calm and controlled way can help prevent jumping up.

7.Be consistent: Consistency is key when training your dog not to jump up. Make sure that everyone in your household is on the same page and uses the same commands and techniques to discourage jumping up.

It's important to remember that jumping up on people is a natural behavior for dogs, so it may take some time and patience to correct. However, with consistent training and a positive approach, you can help your dog learn to greet people in a more appropriate way.