探究NAT物理网关、弹性IP、共享带宽等在裸金属服务器中的作用及优势

近年来，裸金属服务器在云计算市场被多次提及，凭借高性能、弹性伸缩、安全隔离等特性，迅速得到市场认可。裸金属服务器融合了传统物理机与云服务器的各自优势和特点，让单租户拥有完全物理隔离的服务器，用户既能获得卓越的计算性能保障，又能充分享有云服务器的弹性伸缩与快捷灵活。

In recent years, bare metal servers have been mentioned many times in the cloud computing market. With the characteristics of high performance, elastic scaling, security isolation, etc., they have been quickly recognized by the market. The bare metal server integrates the advantages and characteristics of traditional physical machine and cloud server, so that single tenant has a completely physically isolated server. Users can not only obtain excellent computing performance guarantee, but also fully share the elastic expansion and fast flexibility of cloud server.

在裸金属服务器如火如荼的背后，算力、存储、网络、安全这类后勤保障功不可没。在网络方面，此前在《裸金属服务器VPC专有网络的作用详解》的文章里，已经对VPC网络进行了深入剖析，今天我们将基于主机参考裸金属服务器，再次谈及网络技术，探究NAT物理网关、弹性IP、共享带宽等在裸金属服务器中的作用及优势。

In the back of bare metal servers in full swing, computing power, storage, network, security and other logistics support are indispensable. In terms of network, in the previous article "detailed explanation of the role of VPC proprietary network of bare metal server", we have carried out in-depth analysis of VPC network. Today, we will refer to the bare metal server based on the host, talk about network technology again, and explore the role and advantages of NAT physical gateway, elastic IP, shared bandwidth, etc. in bare metal server.

NAT物理网关

Nat physical gateway

NAT物理网关主要为VPC专有网络提供访问Internet，帮助客户在VPC环境下构建一个公网流量的出入口，支持多个裸金属服务器共享弹性IP访问Internet，支持IP级流量管控，快速定位异常流量，排查网络故障。其核心优势在于：

Nat physical gateway mainly provides access to the Internet for VPC proprietary network, helps customers build a public network traffic access in VPC environment, supports multiple bare metal servers to share elastic IP access to the Internet, supports IP level traffic control, quickly locates abnormal traffic, and troubleshoot network faults. Its core advantages are:

亿级并发：支持超高并发连接数，有效应对视频服务、物联网、大数据分析等场景。

Billion level Concurrency: it supports ultra-high concurrent connections, and effectively deals with video services, the Internet of things, big data analysis and other scenarios.

可视化管理：图表化直观展现网关性能状态，可视化多维度监控告警，后台管理方便高效。

Visualized management: visualized display of gateway performance status, visualized multi-dimensional monitoring alarm, convenient and efficient background management.

高性能访问：多种NAT物理网关实例规格，单实例提供万兆级吞吐量，轻松应对峰值流量。

High performance access: a variety of NAT physical gateway instance specifications, single instance provides 10000 megabytes of throughput, easy to cope with peak traffic.

低成本：无需购买多余弹性IP和带宽资源，支持多台裸金属服务器共享公网带宽，降低成本。

Low cost: no need to purchase extra elastic IP and bandwidth resources, support multiple bare metal servers to share public network bandwidth, and reduce costs.

灵活部署：支持跨子网和跨AZ部署，VPC内裸金属服务器可共享NAT物理网关访问Internet。

Flexible deployment: it supports cross subnet and cross AZ deployment. Bare metal servers in VPC can share NAT physical gateway to access Internet.

高可用：采用多机热备、跨机房容灾等高可靠设计，故障自动切换，大幅提高服务可用性。

High availability: it adopts high reliability design such as multi machine hot standby and cross machine room disaster recovery, with automatic fault switching, greatly improving service availability.

地址转换：支持绑定弹性公网IP实例及共享带宽包，实现裸金属服务器间的地址转换服务。

Address translation: support binding elastic public network IP instance and shared bandwidth package to realize address translation service between bare metal servers.

弹性公网IP

Elastic public IP

弹性公网IP提供独立的公网IP资源，用户可将弹性公网IP实例与裸金属服务器、负载均衡、NAT网关、 VPN网关等实例绑定或解绑。借助弹性IP地址，可快速将地址重新映射到账户中的另一个裸金属服务器或负载均衡上，从而屏蔽故障。其核心优势在于：

Elastic public IP provides independent public IP resources. Users can bind or unbind elastic public IP instances with bare metal servers, load balancing, NAT gateway, VPN gateway and other instances. With the help of elastic IP address, the address can be quickly remapped to another bare metal server or load balance in the account, thus shielding the fault. Its core advantages are:

资源解耦：IP和网络带宽资源池化，支持灵活绑定，支持将IP分配给任意资源。

Resource decoupling: pool IP and network bandwidth resources, support flexible binding, and support the allocation of IP to any resource.

独立持有：单独持有独立的公网IP资源，无需与其它计算资源或存储资源绑定购买。

Independent holding: independent public IP resources are held independently, without binding with other computing resources or storage resources.

弹性带宽：支持通过自动伸缩功能灵活调整带宽阈值，带宽的修改即时生效。

Elastic bandwidth: it supports flexible adjustment of bandwidth threshold through auto scaling function, and the modification of bandwidth takes effect immediately.

高可用：多线BGP网络接入，提供高速稳定的网络接入环境。

High availability: multi line BGP network access, providing high-speed and stable network access environment.

多种计费模式：多种计费策略，支持按需、按带宽、按流量计费。

Multiple billing modes: multiple billing strategies, supporting on-demand, bandwidth and traffic billing.

节省带宽成本：支持随时解绑释放，根据配置带宽计算费用，成本最优。

Save bandwidth cost: support to unbind and release at any time, calculate the cost according to the configured bandwidth, and the cost is the best.

可视化管理：提供秒级监控和灵活报警策略，共享带宽支持按IP级别监控。

Visual management: it provides second level monitoring and flexible alarm strategy, and shared bandwidth supports IP level monitoring.

共享带宽

Shared bandwidth

实现多台裸金属服务器共享网络带宽总量，提供地域级带宽共享和复用功能，支持同地域下所有已绑定弹性公网IP的云产品，包括裸金属服务器、NAT网关和负载均衡实例共享网络资源，增加带宽使用的灵活性。提供包括按小时、流量、带宽峰值、 增强型等多种计费模式，多方位降低宽带成本及公网IP管理的复杂度。其核心优势在于：

Realize the sharing of total network bandwidth by multiple bare metal servers, provide the function of regional bandwidth sharing and multiplexing, support all cloud products bound with elastic public IP in the same region, including bare metal servers, NAT gateways and load balancing instances to share network resources, and increase the flexibility of bandwidth use. It provides a variety of billing modes including hourly, traffic, bandwidth peak, enhanced and so on, which can reduce the broadband cost and the complexity of public IP management. Its core advantages are:

带宽利用率高：共享闲时带宽，提升带宽利用率，带宽利用率越高，成本越低。

High bandwidth utilization: share free time bandwidth and improve bandwidth utilization. The higher the bandwidth utilization, the lower the cost.

成本降低：无需单独购买宽带，提供地域级带宽复用和共享功能，降低宽带使用成本。

Cost reduction: no need to purchase broadband separately, provide regional bandwidth multiplexing and sharing functions, and reduce the cost of broadband use.

弹性带宽：超大弹性带宽峰值，按需索取，灵活扩展，按实际使用带宽付费。

Elastic bandwidth: super elastic bandwidth peak value, demand on demand, flexible expansion, pay according to the actual use of bandwidth.

灵活配置：支持多业务灵活配置共享带宽，可随时添加/移除云产品。

Flexible configuration: support multiple services to flexibly configure shared bandwidth, and add / remove cloud products at any time.

主机参考最新推出了香港裸金属服务器租用产品，香港裸金属服务器是一种按需购买、按量付费的物理云服务器租用服务，可以提供云端专用的高性能、安全隔离的物理服务器集群。具体详询主机参考客服zhujicankao.com。

Hong Kong bare metal server rental products are newly launched by the host reference. Hong Kong bare metal server is a physical cloud server rental service purchased on demand and paid by volume, which can provide a high-performance, secure and isolated physical server cluster dedicated to the cloud. For details, please refer to customer service zhujicankao.com.

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