Table of Contents

• YDK
• Installation

YDK

YDK or YANG Development Kit is a Software Development Kit that provides API's that are modeled in YANG.

Installation

##gNMI Requirements

In order to enable YDK support for gNMI protocol, which is optional, the following third party software must be installed prior to gNMI YDK component installation.

###Install protobuf and protoc

    wget https://github.com/google/protobuf/releases/download/v3.5.0/protobuf-cpp-3.5.0.zip
    unzip protobuf-cpp-3.5.0.zip
    cd protobuf-3.5.0
    ./configure
    make
    make check
    sudo make install
    sudo ldconfig

###Install gRPC

    git clone -b v1.9.1 https://github.com/grpc/grpc
    cd grpc
    git submodule update --init
    make
    sudo make install
    sudo ldconfig
    cd -

###Run-time environment

There is an open issue with gRPC on Centos/Fedora, which requires an extra step before running any YDK gNMI application. See this issue on GRPC GitHub <https://github.com/grpc/grpc/issues/10942#issuecomment-312565041>_ for details. As a workaround, the YDK based application runtime environment must include setting of LD_LIBRARY_PATH variable:

    PROTO="/Your-Protobuf-and-Grpc-installation-directory"
    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PROTO/grpc/libs/opt:$PROTO/protobuf-3.5.0/src/.libs:/usr/local/lib64