next-hop (VXLAN Routing)
Syntax
Hierarchy Level
Release Information
Statement introduced in Junos OS Release 17.3R1 for QFX Series switches.
Description
On a QFX5110 switch, configure the maximum number of next hops reserved for use in an Ethernet VPN-Virtual Extensible LAN (EVPN-VXLAN) overlay network.
The QFX5110 switch can store a maximum of 49,152 next hops for use in either underlay networks or an EVPN-VXLAN overlay network. By default, the switch allocates 8000 next hops for use in an EVPN-VXLAN network, which leaves 41,152 next hops for use in underlay networks. The next-hop configuration statement enables you to re-allocate the maximum number of next hops reserved for use in an EVPN-VXLAN network.
If you do not plan to use a QFX5110 switch in an EVPN-VXLAN network, you can set the next-hop configuration statement to 0, which allocates all 49,152 next hops for use in underlay networks.
Conversely, if you plan to use a QFX5110 switch in an EVPN-VXLAN network, you can re-allocate a greater number of the next hops to the EVPN-VXLAN network.
Changing the default number of next hops reserved for use in an EVPN-VXLAN network causes the Packet Forwarding Engine to restart. Restarting the Packet Forwarding Engine interrupts all forwarding operations. Therefore, we strongly recommend using this configuration statement before the EVPN-VXLAN network becomes operational.
Options
Range: 0 through 49,152. The specified value must be a multiple of 4096—for example, 4096, 8192, 12.288, and so on.
Default: 8000
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.