def METHOD_NAME():
    tgen = get_topogen()
    if tgen.routers_have_failure():
        pytest.skip(tgen.errors)
    r2 = tgen.gears["r2"]
    r3 = tgen.gears["r3"]
    def _bgp_converge(router):
        output = json.loads(router.vtysh_cmd("show ip bgp json"))
        expected = {
            "routes": {
                "172.16.1.1/32": [{"nexthops": [{"ip": "192.168.2.2", "used": True}]}],
                "172.16.1.2/32": [{"nexthops": [{"ip": "192.168.2.2", "used": True}]}],
            }
        }
        return topotest.json_cmp(output, expected)
    step("Check if we can see 172.16.1.1/32 after initial converge in R3")
    test_func = functools.partial(_bgp_converge, r3)
    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
    assert result is None, "Cannot see 172.16.1.1/32 in r3"
    def _bgp_weight_prefered_route(router):
        output = json.loads(router.vtysh_cmd("show ip bgp 172.16.1.1/32 json"))
        expected = {
            "paths": [
                {
                    "bestpath": {"selectionReason": "Weight"},
                    "nexthops": [
                        {
                            "ip": "192.168.1.1",
                        }
                    ],
                }
            ]
        }
        return topotest.json_cmp(output, expected)
    step(
        "Check if we can see 172.16.1.1/32 as best selected due to higher weigth in R2"
    )
    test_func = functools.partial(_bgp_weight_prefered_route, r2)
    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
    assert (
        result is None
    ), "Prefix 172.16.1.1/32 is not selected as bests path due to weight"
    step("Kill bgpd in R1")
    kill_router_daemons(tgen, "r1", ["bgpd"])
    def _bgp_stale_route(router, prefix):
        output = json.loads(router.vtysh_cmd("show ip bgp {} json".format(prefix)))
        expected = {"paths": [{"community": {"string": "llgr-stale"}, "stale": True}]}
        return topotest.json_cmp(output, expected)
    step("Check if we can see 172.16.1.1/32 as stale in R2")
    test_func = functools.partial(_bgp_stale_route, r2, "172.16.1.1/32")
    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
    assert result is None, "Prefix 172.16.1.1/32 is not stale"
    def _bgp_llgr_depreference_route(router):
        output = json.loads(router.vtysh_cmd("show ip bgp 172.16.1.1/32 json"))
        expected = {
            "paths": [
                {
                    "bestpath": {"selectionReason": "First path received"},
                    "nexthops": [
                        {
                            "ip": "192.168.0.1",
                        }
                    ],
                }
            ]
        }
        return topotest.json_cmp(output, expected)
    step("Check if we can see 172.16.1.1/32 depreferenced due to LLGR_STALE in R2")
    test_func = functools.partial(_bgp_llgr_depreference_route, r2)
    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
    assert result is None, "Prefix 172.16.1.1/32 is not depreferenced due to LLGR_STALE"
    step("Check if we can see 172.16.1.1/32 after R1 was killed in R3")
    test_func = functools.partial(_bgp_converge, r3)
    _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
    assert result is None, "Cannot see 172.16.1.1/32 in r3"
    step("Kill bgpd in R4 (dynamic peer)")
    kill_router_daemons(tgen, "r4", ["bgpd"])
    step("Check if we can see 172.16.1.2/32 after R4 (dynamic peer) was killed")
    test_func = functools.partial(_bgp_stale_route, r2, "172.16.1.2/32")
    _, result = topotest.run_and_expect(test_func, None, count=120, wait=0.5)
    assert result is None, "Cannot see 172.16.1.2/32 in r2"