Citrix NetScaler EE, Руководство по установке и настройке

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See SD-WAN 4000/5100 SE virtual machines, internal networks, and external port usage for a diagram of port usage on SD-
WAN 4000/5100 SE appliances. Traffic ports are arranged as a set of accelerated bridges, while the management ports are
independent. Typically only one management port is used.
Accelerated Bridges
Citrix NetScaler SD-WAN 4000/5100 SE appliances have multiple accelerated bridges. Different models have different
numbers and types of bridge ports. The two ports making up such a bridge are called an "accelerated pair." All current
models include a built-in network bypass function. (Some older SD-WAN 4000-500 SE and 4000-1000 SE units do not
include network bypass). The network bypass function (also called "fail to wire") connects pairs of ports together if the
appliance fails as a result of either power loss or software failure (as determined by an internal watchdog timer).
Inline deployment . The bypass function allows SD-WAN 4000/5100 SE to be deployed in line with your WAN, typically
between your LAN and your WAN router, without introducing a point of network failure.
The accelerated bridges support either 1 Gbps or 10 Gbps data rates. Ethernet and SFP+ interfaces are supported,
depending on model.
One-arm deployment . One-arm deployments are also supported, using WCCP or virtual inline modes. With such
deployments, a SD-WAN 4000/5100 SE traffic port is usually connected directly to a port on the WAN router. The other
port on the bridged pair is left unconnected.
Performance considerations. Inline deployments provide higher performance than the one-arm deployments, because the
use of two ports instead of one doubles the peak throughput of the interfaces.
Peak throughput is important with SD-WAN 4000/5100 SE appliances, because the compressor provides acceleration in
proportion to the compression ratio. That is, a connection that achieves 100:1 compression transfers data one hundred
times faster than an uncompressed connection, provided that the rest of the network path can keep up.
For example, take a datacenter with a 500 Mbps WAN link and a 1 Gbps LAN. The small 2:1 speed ratio between the WAN
and LAN allows compression to provide only a 2x speedup on a whole-link basis, because there is no way to get data onto
or off of the LAN at speeds above 1 Gbps. A 10 Gbps LAN, which allows a tenfold increase in peak data rates, is
recommended for use with SD-WAN 4000/5100 SE deployments.
When a SD-WAN 4000/5100 SE appliance is deployed in a one-arm mode, the peak transfer rate is cut in half. A SD-WAN
4000/5100 SE in one-arm mode, connected to the router with a 1 Gbps LAN interface, saturates this interface when the
WAN is running at full speed in both directions. For good performance, a SD-WAN 4000/5100 SE must have a LAN interface
that is much faster than the WAN. When the appliance is connected directly to the router in a one-arm mode, use a 10
Gbps router port.
Note: The 10 Gbps ports support 10 Gbps only. They do not negotiate lower speeds. Use the 1 Gbps ports for 1 Gbps
networks.
Other Ports
A SD-WAN 4000/5100 SE appliance has at least two non-accelerated ports. Port 0/1 is typically used for management, Port