In today's digital age, cybersecurity has become a major concern for businesses and individuals. With the popularization of the Internet and the development of technology, the risk of cyber-attacks is increasing. In order to protect the network from various threats and attacks, firewalls have become a crucial network security device. So what is a firewall and what is its role in network security?

As a network device with excellent performance, H3C switch not only has a good reputation in the market and a wide user base, but also performs well in a variety of use environments. So, when the H3C switch needs to be configured with Voice VLAN, what configuration steps are needed to realize it? Let's take a look.