In a Dutch oven, combine beef bones, onion, bay leaf, salt, peppercorns and water. Bring to a boil; reduce heat. Cover and simmer for 2 hours. Strain broth; discard bones, onion and seasonings. Skim fat and return broth to the kettle. Add rutabaga, beets, celery, cabbage, carrots, potatoes and barley. Return to a boil; reduce heat. Cover and simmer 50 minutes or until vegetables are almost tender and barley is cooked. Stir in tomatoes and vinegar; heat through. Ladle into serving bowls. Top with a dollop of sour cream if desired. Sprinkle with dill.