# BGP Lab: Preventing Configuration Errors on Customer EBGP Sessions

DevFeed: [BGP Lab: Preventing Configuration Errors on Customer EBGP Sessions](<https://devfeed.tech/articles/bgp-labs-stop-the-fat-finger-incidents-10958.md>)

Original publisher: [Read original article](<https://blog.ipspace.net/2024/03/bgp-labs-stop-configuration-errors/>)

Published: 2024-03-21T08:04:00Z

Content type: tutorial

Language: en

Sources: [ipSpace.net blog](<https://devfeed.tech/sources/ipspace-net-blog.md>)

Topics: [BGP](<https://devfeed.tech/topics/bgp.md>), [configuration](<https://devfeed.tech/topics/configuration.md>)

Tags: [bgp](<https://devfeed.tech/tags/bgp.md>), [configuration](<https://devfeed.tech/tags/configuration.md>), [errors](<https://devfeed.tech/tags/errors.md>), [netlab](<https://devfeed.tech/tags/netlab.md>)

## AI overview

A BGP lab exercise on using default filters for customer EBGP sessions to limit the propagation of configuration errors, including fat-finger incidents.

## Source excerpt

Last time, we discussed the first line of defense against fat finger incidents: limiting the number of BGP prefixes your router accepts from a BGP neighbor. However, you can do much more without deploying customer-specific filters (which might require a customer database) or ROV/RPKI. You can practice the default filters you should always deploy on EBGP sessions with your customers in the Stop the Propagation of Configuration Errors lab exercise.