Site Recovery, Disaster Recovery and Business Continuity

What is Internet failover?
When one WAN link (Internet connection) fails, traffic is redirected from that link to a functioning link. In most cases, PowerLink™ does this instantly and Internet users notice no impact or delays.

What is QoS?
Quality of Service or QoS, in the most simplistic terms, is prioritizing network traffic to satisfy user application requirements. QoS is the ability to provide consistent, predictable Data, Voice, and Video service delivery.

PowerLink users can setup QoS rules which determine bandwidth minimums and maximums for specific applications based on protocol type, source port used, destination port used, and source IPs used and / or any combination of these. The PowerLink QoS feature set can allow you to get very granular and can be customized to achieve most traffic shaping goals. In turn, guaranteeing bandwidth to those applications whose smooth operation is critical to the success of the enterprise, regardless of traffic congestion on the network.

For more information, see our white paper on PowerLink Bandwidth Management Using QoS.

What is stateful traffic failover?
The ability of traffic to automatically move from one WAN /ISP connection to another without any loss of service.

What is site-to-site channel bonding?
Site-to-site channel bonding is the virtual bonding of the bandwidth of multiple WAN links from disparate ISPs via load balance between two IP points. This bonding allows for all traffic destined between these two points to use all the bandwidth available in the bonded channel (high capacity) and to perform stateful traffic failover. Ecessa products provide site-to-site channel bonding and the ability to conduct link health checking (latency and packet loss) as well as apply QoS to the network links.

How does DNS work?
On the Internet, the Domain Name System (DNS) stores and associates many types of information with domain names; most importantly, it translates domain names (computer hostnames) to IP addresses. It also lists mail exchange servers accepting e-mail for each domain. In providing a worldwide keyword-based redirection service, DNS is an essential component of contemporary Internet use. PowerLink and ShieldLink can be used as the authoritive DNS server.
For more information, see our white paper on PowerLink and Authoritative DNS.

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