Overview
Describes features that enable BGP multipath and load balancing to optimize traffic distribution, improve network reliability, and support advanced policies for granular control in large-scale environments.
You will learn about the features and configuration methods that enable BGP multipath and load balancing, supporting improved performance and resilience in complex, large-scale environments.
BGP multipath and load balancing techniques are a set of network solutions that
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enable traffic to use multiple equal-cost paths for improved reliability,
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increase scalability and efficiency by distributing traffic across iBGP and eBGP sessions, and
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support advanced policies and resilient hashing for granular control.
EIBGP policy-based multipath with equal-cost multipath
Explains how EIBGP policy-based multipath with ECMP enables routers to use multiple best paths for forwarding traffic, balancing load across iBGP and eBGP sessions with advanced policy support.
Resilient hashing and flow auto-recovery
Describes resilient hashing and flow auto-recovery features that maintain stable traffic flows during ECMP path failures by rerouting only affected flows and restoring original distribution upon recovery.
BGP selective multipath
Explains BGP selective multipath, which allows installation of multiple parallel paths only from specified neighbors, providing fine-grained control over multipath eligibility.
iBGP multipath load sharing
Describes iBGP multipath load sharing that installs multiple iBGP paths for the same destination, enabling load sharing to improve bandwidth utilization and network resiliency.
BGP multipath next-hop and as-path control
Describes enhancements that prevent next-hop overwriting and allow control over as-path usage in multipath route selection to maintain predictable and loop-free routing.