App.js

import React, { Component } from 'react';
import 'bootswatch/cerulean/bootstrap.css';
import { Navbar, NavItem, Nav, Grid, Row, Col } from 'react-bootstrap';
import { Route, Link, Redirect} from 'react-router-dom';
import { LinkContainer } from 'react-router-bootstrap';
import {Reg, Login} from './Auth';

var loggined = true;

const Home = () => (
  loggined ? (
    <Redirect to="/login"/>
  ) : (
    <Redirect to="/reg"/>
  )
);

export default class App extends Component {
  constructor() {
    super();
    this.state = {
      activePlace: 0,
    };
    setTimeout(function () {
      console.log('redirect');
    }, 6000)
  }
  render() {
    var loggined = false;
    return (
      <div>
        <Navbar inverse collapseOnSelect>
          <Navbar.Header>
            <Navbar.Brand>
              <Link to="/">Сбор заявок</Link>
            </Navbar.Brand>
            <Navbar.Toggle />
          </Navbar.Header>
          <Navbar.Collapse>
            <Nav>
              <LinkContainer to="/reg">
                <NavItem eventKey={0}>Регистрация</NavItem>
              </LinkContainer>
              <NavItem eventKey={1} href="#">Мои заявки</NavItem>
              <NavItem eventKey={2} href="#">Подать заявку</NavItem>
              <NavItem eventKey={3} href="#">Все заявкики по тренерам</NavItem>
              <LinkContainer to="/login">
                <NavItem eventKey={4}>Авторизация</NavItem>
              </LinkContainer>
              <NavItem eventKey={5} href="#">Выход</NavItem>
            </Nav>
          </Navbar.Collapse>
        </Navbar>
        <Route exact path="/" component={Home} />
        <Route path={'/reg'} component={Reg}/>
        <Route path={'/login'} component={Login}/>
      </div>
    );
  }
}