• Author : Abhiram Kalluru


gRIBI (gRPC Routing Information Base Interface)

Description gRIBI (gRPC Routing Information Base Interface) defines an interface through which OpenConfig AFT (Abstract Forwarding Table) entries can be injected from an external client to a network element. The gRIBI interface is defined in the gRIBI github repo – which defines a simple API for adding, updating, and removing routing entries. These RIB entries are described using a protobuf translated version of the OpenConfig AFT model. For a number of use cases in modern IP networks, the ability to inject routing entries from an external source is advantageous. (Source: https://github.com/openconfig/gribi/blob/master/doc/motivation.md) Use Case The primary use case supported is, steering...
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BGP Labeled-Unicast (LU) path NH resolution over Tunnel RIB entries

Description Prior to this release, BGP in “ribd” mode (when routing protocols are configured in “ribd” mode) supports resolution of BGP Labeled-Unicast protocol (BGP LU) path next-hop over only connected routes. Resolution of the next-hop over IGP or static routes is not allowed since the next-hop router may not be in the MPLS forwarding path in which case the traffic will get dropped by the next-hop router (per IGP). This enhancement allows BGP in “ribd” mode to support resolution of BGP LU path next-hop over entries in the Tunnel RIB and fall-back to resolving over connected route when there is...
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BGP recursive route resolution with nexthop groups

Nexthop Groups is a feature that allows users to manually configure a set of nexthops by specifying their nexthop addresses and associated encapsulation information. Each Nexthop Group is referred to by a unique name and can support a single tunnel type like GRE, MPLS, etc… Static routes that directly point to Nexthop Groups can be configured. Any traffic destined to such static routes will then be forwarded via the nexthops specified in the corresponding Nexthop Group. This feature provides ability to recursively resolve Static and BGP routes over Nexthop Groups. There is not configuration changes required as part of this...
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