>>> from ydk.services import CRUDService
>>> from ydk.providers import NetconfServiceProvider
>>> from ydk.models.openconfig import bgp

>>> provider = NetconfServiceProvider(address='xrv', port=830, username="cisco", password="cisco", protocol="ssh")

>>> crud = CRUDService()

>>> bgp = bgp.Bgp()
>>> bgp.global_.config.as_ = 65512

>>> crud.create(provider, bgp)
>>>

RP/0/0/CPU0:xrv# show run | begin bgp
Wed Aug 24 19:27:22.111 UTC
Building configuration...
router bgp 65512
!

>>> bgp.global_.config.router_id = '1.1.1.1'
>>> crud.create(provider, bgp)
>>>

>>> bgp.global_.config.as_ = -1
>>>
>>> crud.create(provider, bgp)