1. Cisco Systems Inc.
2. VMware Inc.
3. Juniper Networks Inc.
4. Hewlett Packard Enterprise Development LP
5. Huawei Technologies Co. Ltd.
6. Nokia Corporation
7. Extreme Networks Inc.
8. Dell Technologies Inc.
9. NEC Corporation
10. Big Switch Networks Inc.
11. Pluribus Networks Inc.
12. Cumulus Networks Inc.
13. Arista Networks Inc.
14. Ciena Corporation
15. Silver Peak Systems Inc.