健康资讯 一、Broadcast Suppression介绍
1．Broadcast Suppression（广播抑制）是在一个网络中保护系统免受恶意广播攻击所采取的一种技术手段，旨在防止未经授权的和未受控制的网络流量对网络系统的影响。
2．Broadcast Suppression是一种网络安全技术，采用广播流量抑制的原理，限制网络上发出大量非法广播流量，保护网络不受到恶意攻击。
3．Broadcast Suppression能够限制网络上传输广播流量，防止恶意广播攻击，防止未经授权的广播信息对网络造成影响和破坏，减少网络流量，延长网络设备的有效寿命。
二、Broadcast Suppression的主要特点
1．Broadcast Suppression能够有效的抑制网络中的广播流量，针对未经授权和未受控制的网络流量，去除网络中的恶意流量，从而提高网络的效率和稳定性。
2．Broadcast Suppression工作时，能够有效的控制网络中传输的文件类型，可以有效的限制一些不需要的文件类型，例如音视频和邮件附件，有助于减轻网络负荷，提高网络的安全性。
3．Broadcast Suppression能够有效的限制特定的IP地址，隔离网络设备不受未经授权的访问，可以对网络和关键资源进行保护，提升应用稳定性。
三、Broadcast Suppression的应用
1．Broadcast Suppression可以应用在多种局域网和广域网中，可以有效的抑制系统发出无用的网络请求，阻止病毒和未经授权的入侵，降低网络流量，提高网络稳定性。
2．Broadcast Suppression广泛应用于有线网络和无线网络，它能够减少网络延迟，改善网络服务质量，优化网络的效率和稳定性，为企业的IT环境的管理留出宝贵的时间和空间。
3．Broadcast Suppression主要用于提升网络的安全性，防止恶意攻击，有效的抑制网络中的广播流量，让网络的性能更加强大，稳定性更加高效。
BROADCAST SUPPRESSION：
1.Broadcast suppression is a function of multiple layer switches used in a network. It is used to control or prevent unnecessary broadcast frames passing through the system.
2.Broadcast frames are those viewed by every station or node on the LAN, so multiple copies of these frames can cause network inundation, increase network traffic and reduces network performance.
3.Broadcast suppression offers a technique to efficiently limit these broadcast frames on the network. It helps to provide secure layer 2 communications by preventing frames from being broadcasted to all devices on the LAN. It also helps reduce display overhead, resulting in improved network performance.
4.Broadcast suppression detects the broadcast frames from the source and filters them using a predefined filtering rule. The filtering rules can be configured for specific types of frames such as BMAC broadcast frames, DHCP broadcast frames, ARP broadcast frames and layer 2 multicast frames.
5.Some of the benefits of broadcast suppression include reducing the size of the broadcast domain, eliminating broadcast frames from reaching unauthorized devices, reducing the amount of network traffic, increasing network efficiency, and improving the performance of devices on the same LAN.
6.With broadcast suppression, source and destination addresses are checked against configured rules. If the rule matches, then the frames are dropped and not broadcasted. For example, broadcast suppression can be configured to only allow broadcast forwarding in one direction and to drop all broadcast frames in the opposite direction.
7.Broadcast suppression is enabled by default on most layer 2 switches, though they can be configured to filter out specific types of frames. Broadcast suppression also enables switching-based unicast to reduce the number of broadcast and multicast packets sent across the network.
8.Broadcast suppression works by allowing and dropping frames based on certain criteria and conditions. These criteria and conditions may include string matching, certain network protocol types, layer 2 multicast addresses, and the specified time interval for broadcast frames.
9.To ensure optimal network performance, broadcast suppression should be enabled on all switches throughout the network. Additionally, broadcast suppression should be configured to filter out only the broadcast frames that should not be forwarded by the switch.
