next-hop (VXLAN Routing)
Syntax
next-hop integer;
Hierarchy Level
[edit forwarding-options vxlan-routing]
Description
Configure the maximum number of next hops reserved for use in an Ethernet VPN-Virtual Extensible LAN (EVPN-VXLAN) overlay network.
Juniper Networks switches can store a maximum
number of next hops for use in either an underlay
network or an EVPN-VXLAN overlay network. By
default, a switch allocates
8192
next hops for use in an EVPN-VXLAN network, which
leaves the remaining next hops for use in an
underlay network. For example,
a
QFX5110
switch
can store a maximum of
45056
next
hops.
Subtracting the default setting of 8192 next hops
from that maximum number leaves
36864
next
hops for use in an underlay network. 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
switch in an EVPN-VXLAN network,
you can set the next-hop
configuration statement to 0, which allocates all
next hops for use in an underlay
network.
Conversely, if you plan to use a 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
| integer | Maximum number of next hops reserved for use in an EVPN-VXLAN overlay network on a switch. |
Range: QFX5110 switches: 0 through 45056. QFX5120 switches: 0 through 61440. The integer you specify must be a multiple of 4096—for example, 4096, 8192, 12288, and so on.
Default: 8192
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
Release Information
Statement introduced in Junos OS Release 17.3R1.