@kit's answer is okay, but remember to add ROUTER_PROVIDERS to providers in the component. Then you can redirect to another page within ngOnInit method:
import {Component, OnInit} from 'angular2/core';
import {Router, ROUTER_PROVIDERS} from 'angular2/router'
@Component({
selector: 'loginForm',
templateUrl: 'login.html',
providers: [ROUTER_PROVIDERS]
})
export class LoginComponent implements OnInit {
constructor(private router: Router) { }
ngOnInit() {
this.router.navigate(['./SomewhereElse']);
}
}