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Home Documentation Junos OS Junos CLI Reference CLI Reference N

Junos CLI Reference

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next-hop-based-tunnel (Routing Options)

date_range 19-Nov-23
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Syntax

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next-hop-based-tunnel;

Hierarchy Level

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[edit logical-systems logical-system-name routing-options dynamic-tunnels gre next-hop-based-tunnel],
[edit routing-options dynamic-tunnels gre next-hop-based-tunnel]

Description

Enable dynamic next hop based GRE tunnels.

Create a tunnel composite next hop for every dynamic GRE tunnel configured. The tunnel composite next hop includes the dynamic tunnel’s encapsulation data and a VPN label (when chained composite next hop is not enabled). When this option is not configured, the default interface-based tunnel mode is enabled. By configuring this option, a device can scale up to 32,000 IP tunnels, which is otherwise restricted to the system limit on the number of interfaces supported.

At a given point in time, either the next-hop-based dynamic tunnel or the default interface-based dynamic GRE tunnel can exist on a device. A switchover from one tunnel mode to another deletes the existing tunnels and creates new tunnels in the new tunnel mode. As a result, a tunnel mode switchover can impact network performance.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 16.2.

Related Documentation

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