Method test_bier_load_balance

test/test_bier.py:242–352

BIER load-balance

(self)

        self.bier_midpoint(BIERLength.BIER_LEN_64, 8, 64)

    def test_bier_load_balance(self):
        """BIER load-balance"""

        #
        # Add a BIER table for sub-domain 0, set 0, and BSL 256
        #
        bti = VppBierTableID(0, 0, BIERLength.BIER_LEN_64)
        bt = VppBierTable(self, bti, 77)
        bt.add_vpp_config()

        #
        # packets with varying entropy
        #
        pkts = []
        for ii in range(257):
            pkts.append(
                (
                    Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
                    / MPLS(label=77, ttl=255)
                    / BIER(
                        length=BIERLength.BIER_LEN_64,
                        entropy=ii,
                        BitString=scapy.compat.chb(255) * 16,
                    )
                    / IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6)
                    / UDP(sport=1234, dport=1234)
                    / Raw()
                )
            )

        #
        # 4 next hops
        #
        nhs = [
            {"ip": "10.0.0.1", "label": 201},
            {"ip": "10.0.0.2", "label": 202},
            {"ip": "10.0.0.3", "label": 203},
            {"ip": "10.0.0.4", "label": 204},
        ]

        for nh in nhs:
            ipr = VppIpRoute(
                self,
                nh["ip"],
                32,
                [
                    VppRoutePath(
                        self.pg1.remote_ip4,
                        self.pg1.sw_if_index,
                        labels=[VppMplsLabel(nh["label"])],
                    )
                ],
            )
            ipr.add_vpp_config()

        bier_route = VppBierRoute(
            self,
            bti,