WAN Connectivity :
AnexGATE’s USG provides Multi WAN connectivity , Auto failover & fallback , Load Balance features normally found only in enterprise-class solutions, to provide high-performance, centrally managed security solutions that scale from corporate headquarters down to branch offices and satellite locations.
With the inclusion of Multiple Gigabit Ethernet ports, link fail-over and Internet session load balancing as well as multiple security zones, the AnexGATE can be deployed in a myriad of environments. If the primary broadband connection fails, the AnexGATE can automatically fail over to a second or Third Internet connection or balance traffic between them, helping businesses realize the full benefits of their network bandwidth. In case of a complete broadband failure, the AnexGATE can restore connectivity quickly and automatically via a USB based 3G,4G/LTE connectivity .
Multi ISP Link Support- Secure, Uninterrupted WAN Connectivity
100% Reliability of Internet :Improve Connectivity the way we want-AnexGATE can combine up to Multiple Internet connections with support of 3G, 4G/LTE and WiMAX WAN connectivity, which also offering assured security over wireless WAN links, allowing you to subscribe to multiple Internet providers for maximum efficiency.
3G/4G Failover & Fallback support
Each and every AnexGATE Appliances support cellular connectivity through 3G and 4G USB modems, maximizing WAN uptime by relying on the cellular connection in case of downtime of primary ISP links.
Cellular support for maximum uptime- 2G/3G cellular support includes 1xEV-DO, W-CDMA, and HSPA from major cellular carriers, and 4G cellular support includes LTE and WiMAX.
Seamless, automatic failover with traffic prioritization-In the event of a connectivity failure of the WAN interfaces, traffic is automatically redirected to the 3G/4G cellular USBmodem interface within seconds. The AnexGATE built-in traffic prioritization engine redirects flows and allocates capacity based on your prioritized application needs.
WAN connectivity for remote sites- Use 3G/4G connectivity to connect remote sites that have no Internet connectivity, are limited to slow, high latency lines, or only have prohibitively expensive broadband connectivity options.
Auto Failover and Load balancing
AnexGATE USG is designed to proactively manage multiple ISP or Private links. Typically, these devices are installed between the LAN and modems or routers :
AnexGATE Load balance and Auto Failover will perform the following functions:
Auto Link failover and Fallback :WAN Link Failover works in conjunction with multiple ISPs to assure that you maintain Internet connectivity if a loss of connectivity occurs on one of your WAN connections. If one of your ISP links goes down, AnexGATE will automatically route all traffic over the other WAN(s) until service is restored.
Load balancing (Outbound Traffic) : the Load balancer will be able to distribute traffic leaving the organization across available links based on organizational preferences.
AnexGATE load balancing distributes the data traffic with the Internet to different routes. The firewall then decides which way the Internet is accessed each time a connection is established.
As a rule, this distribution is based on protocols. AnexGATE also makes it possible to assign each individual connection to a route. This allows the utilisation of Internet connections to be planned ingreat detail and optimised.
For the load balancing in the Firewall the packets of the desired service will be selected in the package filter on the basis of source (IP/Mac ), protocol (TCP, UDP, ICMP…) and if necessary further criteria (like e.g. TCP port) and added with one more unique mark.
The decision, which Internet connection(s) should be used for the data stream, is defined in the routing-process (so-called “policy – routing”).
Aggregating Bandwidth and Distributing Load :Aggregating the bandwidth of multiple Internet connections allows you to provide faster Internet access. The individual bandwidth of the various Internet links available gets aggregated to give users a much faster Internet experience.
The way bandwidth aggregation works is by distributing the Internet requests from users in a round-robin fashion to the Internet links available. This ensures that, on an average, requests are evenly distributed among the available Internet links.
Further follow-up traffic to that Internet request will then be transacted on the same link. This implies that while a single individual download will still be limited to maximum bandwidth constraints of a single Internet link, multiple users will now be able to do such downloads at the same time without eating into each other’s bandwidth usage.
This round-robin load distribution can also be weighted in favour of a particular link – especially in cases where there is a difference in the respective capacities of the individual links. This will send traffic in the specified ratio.
Handling Failure :While its good to have multiple links and aggregate their bandwidth, its equally important to detect and handle link failure. A failed link has to be dropped from bandwidth aggregation policies so that traffic does not get routed over it.
All links that are part of a bandwidth aggregation group are actively monitored to detect their availability and failed links are immediately removed from the bandwidth aggregation group. Failed links are also consistently monitored and as soon as a link become available again it is added to the link aggregation group.