PIC (Prefix Independent Convergence) is a feature to decrease the data plane convergence time. There are two flavors: BGP PIC Core: decreases convergence time when a core router fails and your IGP has to find a new best path to your PE router.

2016年2月15日 · With BGP Multipath, the BGP Prefix-Independent Convergence (PIC) feature is already supported. The BGP PIC feature supports prefixes only for IPv4, IPv6, VPNv4, and VPNv6 address families. The BGP PIC feature cannot be configured with Multicast or L2VPN Virtual Routing and Forwarding (VRF) address families.

2022年4月6日 · BGP PIC Fundamentals: BGP PIC ( Prefix Independent Convergence ) is a BGP Fast reroute mechanism which can provide sub-second convergence even for the 900K internet prefixes by taking the help of IGP convergence.

BGP PIC（Prefix Independent Convergence），即BGP前缀无关收敛，也叫BGP快刷。通俗的讲，就是BGP路由收敛的时候，收敛的速度和路由的前缀个数没有关系。打开BGP PIC功能以后，设备的BGP收敛速度会比较快，而且不受前缀数量的影响，有利于减少路由收敛期间的数据丢包。

Enable the Bidirectional Forwarding Detection (BFD) protocol to quickly detect link failures of directly connected neighbors. With BGP Multipath, the BGP Prefix-Independent Convergence (PIC) feature is already supported. The BGP PIC feature supports prefixes only for IPv4, IPv6, VPNv4, and VPNv6 address families.

The described technique yields prefix independent convergence while ensuring incremental deployment, complete automation, and zero management and provisioning effort. It is noteworthy to mention that the benefits of BGP Prefix Independent Convergence (BGP-PIC) are hinged on the existence of more than one path whether as ECMP or primary-backup.

2023年11月9日 · bgp pic功能可以检测两种类型的网络故障。 核心节点或链路故障（内部边界网关协议[iBGP]节点故障） ：如果PE节点或链路发生故障，那么该故障会通过IGP收敛被检测到。

BGP Prefix Independent Convergence (PIC) since it works by triggering an immediate and prefix-independent dataplane rerouting of the BGP destinations via the alternate path at In-terior Gateway Protocol (IGP) convergence time. We present experimental results of the convergence behavior based on a

2022年11月2日 · With BGP Multipath, the BGP Prefix-Independent Convergence (PIC) feature is already supported. The BGP PIC feature supports prefixes only for IPv4, IPv6, VPNv4, and VPNv6 address families. The BGP PIC feature cannot be configured with Multicast or L2VPN Virtual Routing and Forwarding (VRF) address families.

While BGP attributes determine the best path selection and influence which paths become primary and backup routes, they don't directly affect the BGP PIC mechanism itself. When the primary path fails, BGP PIC enables immediate switchover to the backup path without requiring attribute re-evaluation. Key points about BGP PIC: