Netgear FVS336G-300NAS Specifiche Scaricare il pdf (Pagina 531)

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Optimize Performance and Manage Your System

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ProSAFE Dual WAN Gigabit WAN SSL VPN Firewall FVS336Gv3

Performance Management

Performance management consists of controlling the traffic through the VPN firewall so that

the necessary traffic gets through if a bottleneck occurs. To prevent bottlenecks from

occurring in the first place, you can either reduce unnecessary traffic or reschedule some

traffic to low-peak times. The VPN firewall has the necessary features and tools to help the

network manager accomplish these goals.

The following sections provide information about performance management:

• Bandwidth Capacity Overview

• Features That Reduce Traffic

• Features That Increase Traffic

• Use QoS and Bandwidth Assignment to Shift the Traffic Mix

• Monitoring Tools for Traffic Management

Bandwidth Capacity Overview

The maximum bandwidth capacity of the VPN firewall in each direction is as follows:

• LAN side. 4000 Mbps (four LAN ports at 1000 Mbps each)

• WAN side

- Load balancing mode. 2000 Mbps (two WAN ports at 1000 Mbps each)

- Auto-rollover mode. 1000 Mbps (one active WAN port at 1000 Mbps)

- Single WAN port mode. 1000 Mbps (one active WAN port at 1000 Mbps)

In practice, the WAN-side bandwidth capacity is much lower when you use a DSL or cable

modem to connect to the Internet. At 1.5 Mbps, the WAN ports support the following traffic

rates:

• Load balancing mode. 3 Mbps (two WAN ports at 1.5 Mbps each)

• Auto-rollover mode. 1.5 Mbps (one active WAN port at 1.5 Mbps)

• Single WAN port mode. 1.5 Mbps (one active WAN port at 1.5 Mbps)

As a result, and depending on the traffic that is being carried, the WAN side of the VPN

firewall is the limiting factor to throughput for most installations.

Using two WAN ports in load balancing mode increases the bandwidth capacity of the WAN

side of the VPN firewall, but no backup is present if one of the WAN ports fails. When such a

failure occurs, the traffic that would be sent on the failed WAN port is diverted to another

WAN port that is still working, thus increasing its load. However, one exception exists: Traffic

that is bound by protocol to the WAN port that failed is not diverted.

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Netgear FVS336G-300NAS Specifiche Pagina 531

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