Enabling ECMP VPN route redistribution

About ECMP VPN route redistribution

For multiple routes that have the same prefix and RD, a VPN instance redistributes only the optimal route into its routing table by default. This feature enables a VPN instance to redistribute all routes that have the same prefix and RD into its routing table to perform load sharing.

Procedure

To enable ECMP route redistribution:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Enter BGP IPv4 unicast address family view, BGP IPv6 unicast address family view, BGP-VPN IPv4 unicast address family view, BGP-VPN IPv6 unicast address family view, or BGP EVPN address family view.	Enter BGP IPv4 unicast address family view: bgp as-number [ instance instance-name ] address-family ipv4 [ unicast ] Enter BGP IPv6 unicast address family view: bgp as-number [ instance instance-name ] address-family ipv6 [ unicast ] Enter BGP-VPN IPv4 unicast address family view: bgp as-number [ instance instance-name ] ip vpn-instance vpn-instance-name address-family ipv4 [ unicast ] Enter BGP-VPN IPv6 unicast address family view: bgp as-number [ instance instance-name ] ip vpn-instance vpn-instance-name address-family ipv6 [ unicast ]	N/A
3. Enable ECMP VPN route redistribution.	vpn-route cross multipath	By default, ECMP VPN route redistribution is disabled. If multiple routes have the same prefix and RD, a VPN instance redistributes only the optimal route into its routing table. In BGP IPv4 unicast address family view and BGP IPv6 unicast address family view, this command redistributes ECMP routes to the routing table of the public instance. For more information about the public instance, see EVPN Configuration Guide.

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Enter BGP IPv4 unicast address family view, BGP IPv6 unicast address family view, BGP-VPN IPv4 unicast address family view, BGP-VPN IPv6 unicast address family view, or BGP EVPN address family view.

Enter BGP IPv4 unicast address family view:
1. bgp as-number [ instance instance-name ]
2. address-family ipv4 [ unicast ]
Enter BGP IPv6 unicast address family view:
1. bgp as-number [ instance instance-name ]
2. address-family ipv6 [ unicast ]
Enter BGP-VPN IPv4 unicast address family view:
1. bgp as-number [ instance instance-name ]
2. ip vpn-instance vpn-instance-name
3. address-family ipv4 [ unicast ]
Enter BGP-VPN IPv6 unicast address family view:
1. bgp as-number [ instance instance-name ]
2. ip vpn-instance vpn-instance-name
3. address-family ipv6 [ unicast ]

N/A

3. Enable ECMP VPN route redistribution.

vpn-route cross multipath

By default, ECMP VPN route redistribution is disabled. If multiple routes have the same prefix and RD, a VPN instance redistributes only the optimal route into its routing table.

In BGP IPv4 unicast address family view and BGP IPv6 unicast address family view, this command redistributes ECMP routes to the routing table of the public instance. For more information about the public instance, see EVPN Configuration Guide.

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