1. Cisco Systems Inc.
2. Juniper Networks Inc.
3. Arista Networks Inc.
4. Huawei Technologies Co. Ltd.
5. Nokia Corporation
6. Hewlett Packard Enterprise Development LP
7. Dell Technologies Inc.
8. Extreme Networks Inc.
9. F5 Networks Inc.
10. Palo Alto Networks Inc.
11. Fortinet Inc.
12. Check Point Software Technologies Ltd.
13. Citrix Systems Inc.
14. Riverbed Technology Inc.