Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 

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.

Note

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

integerMaximum number of next hops reserved for use in an EVPN-VXLAN overlay network on a QFX5110 switch.

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.