hello, mailto. I am working retrofite the bgp command to northbound api. I meet a issue and i did'nt know about libyang well. I use yang/frr-bgp.yang generate skeleton code. i execute in vtysh > localhost.localdomain(config)# router bgp 200 % Failed to edit configuration. YANG error(s): Error: YANG version 1.1 expects all includes in main module, includes in submodules (frr-bgp-common-structure) are not necessary. Error: YANG version 1.1 expects all includes in main module, includes in submodules (frr-bgp-neighbor) are not necessary. Error: YANG version 1.1 expects all includes in main module, includes in submodules (frr-bgp-neighbor) are not necessary. Error: YANG version 1.1 expects all includes in main module, includes in submodules (frr-bgp-peer-group) are not necessary. Error: YANG version 1.1 expects all includes in main module, includes in submodules (frr-bgp-peer-group) are not necessary. Error: YANG version 1.1 expects all includes in main module, includes in submodules (frr-bgp-bmp) are not necessary. Path: Schema location "/frr-routing:routing/control-plane-protocols/control-plane-protocol". Error: Predicate missing for list "control-plane-protocol" in path "/frr-routing:routing/control-plane-protocols/control-plane-protocol/frr-bgp:bgp". this means if i should write bgpd yang model in myself and refer to isisd. hope your reply! 综合接入 冯磊 深圳震有科技股份有限公司 座机：0755-86099888-1198 电话：13045884882 网址：http://www.genew.com 地址：深圳市南山区高新南区科苑南路3176号彩讯科技大厦6层 邮箱：fenglei@genew.com