The value of tBgpInstanceDisable4ByteASN specifies whether or not
4-byte ASN capability will be advertised by this peer.
When the value of tBgpInstanceDisable4ByteASN is set to false,
4-byte ASN support will be negotiated with the associated remote
peers. When the value of tBgpInstanceDisable4ByteASN is set to true,
4-byte ASN capability will not be advertised by this peer.