The validity of Huawei certification has the difference between 3 years and 2 years, in which the engineer and senior engineer level certificates (HCIA/HCIP) are valid for 3 years, and the expert level certificate (HCIE) is valid for 2 years. Huawei certification validity extension methods: 1, to participate in and pass the certification corresponding to any of the exams; 2, to participate in and pass the certification in the technical direction of the higher-level certification corresponding to any of the exams; 3, to participate in and pass the certification in the category of the same level or higher-level certification corresponding to any of the exams. Huawei certification certificate extension rules: Huawei HCIA/HCIP certification certificate extension: in the certificate validity period of three years through the re-certification, the certificate validity period refreshed from the results of the date of release calculated for three years. Huawei HCIE certification certificate extension: If you pass the recertification within 2 years of the certificate validity period, the certificate validity period will be refreshed by 2 years from the date of the release of the results; if you pass the recertification within 1 year of the buffer period, the certificate validity period will be refreshed by 2 years from the closing date of the original certificate validity period.