Technical Tip : Configuring eBGP MultiHop

FortiGate

FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.

Article Id 204898

Description

This article describes how to configure eBGP MultiHop.

Scope

Solution

By default TTL is set to 1 for eBGP session, hence neighbor must be directly connected.

- To overcome that limitation, ebgp multihop can be used, so that neighbors do not need to be directly
connected.

- A common use case is load balancing between 2 routers connected via 2 or more links.

- Because of recursive lookup, load sharing toward a BGP destination always occurs if there are several equal-cost IGP paths to the BGP next hop.

5315

Contributors

Broad. Integrated. Automated.

The Fortinet Security Fabric brings together the concepts of convergence and consolidation to provide comprehensive cybersecurity protection for all users, devices, and applications and across all network edges.