The deterministic-med command enables the BGP deterministic-MED function so that the route selection result is irrelevant to the sequence in which routes are received.
The undo deterministic-med command restores the default configuration.
By default, the BGP deterministic-MED function is disabled.
Usage Scenario
If the BGP deterministic-MED function is disabled, routes are compared against each other according to the sequence in which they are received.
After the BGP deterministic-MED function is enabled using the deterministic-med command, BGP groups the routes that are learned from different ASs but are destined for the same network segment based on the leftmost AS number in the AS_Path, selects one optimal route from each group, and then compares the optimal routes of all the groups. This mode of route selection ensures that the sequence in which routes are received is irrelevant to the route selection result. For detailed application of this command, see Configuration Guide > IP Routing > BGP Configuration > BGP Route Selection Rules > Route Attributes > MED.<HUAWEI> system-view [~HUAWEI] ip vpn-instance vpna [*HUAWEI-vpn-instance-vpna] ipv4-family [*HUAWEI-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1 [*HUAWEI-vpn-instance-vpna-af-ipv4] quit [*HUAWEI-vpn-instance-vpna] quit [*HUAWEI] bgp 100 [*HUAWEI-bgp] ipv4-family vpn-instance vpna [*HUAWEI-bgp-vpna] deterministic-med <HUAWEI> system-view [~HUAWEI] ip vpn-instance vpna [*HUAWEI-vpn-instance-vpna] ipv4-family [*HUAWEI-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1 [*HUAWEI-vpn-instance-vpna-af-ipv4] quit [*HUAWEI-vpn-instance-vpna] quit [*HUAWEI] bgp 100 [*HUAWEI-bgp] ipv4-labeled-unicast vpn-instance vpna [*HUAWEI-bgp-labeled-vpna] deterministic-med