In IOS XR, a security mechanism exists whereby eBGP sessions do not exchange routes until both inbound and outbound policies are configured. In recent years, this functionality has also been made available for configuration on IOS XE.

In IOS XR, it is possible to manage annotations/comments within the configuration. This post explains the procedures to insert and remove them efficiently.

Often, when it is necessary to enable a new address family within a BGP session, it is assumed that the operation has no impact. In this post, we will examine whether this assumption is always true.

External BGP sessions require a specific configuration to be established across multiple hops. What happens when the session is built between the loopback interfaces of two adjacent nodes?