SatLink VSAT User Guide
Publication no. 101557
Copyright © 2009 – STM Group, Inc.
Page 87 (160)
The CLI command
ip pep show displays current PEP configuration in addition to PEP status
information. Table 8 provides a short description of the displayed parameters.
Parameters Description
PEP status Indicates whether the PEP functionality in the VSAT is enabled or disabled.
PEP Mode Indicates whether the VSAT is configured in Redirect or Transparent Mode
PEP ServerAddress Shows that IP address of the Hub PEP Server that the VSAT PEP client is
configured to interact with.
Maximum Connections Shows the maximum number of TCP connections that the VSAT PEP client
can handle simultaneously.
Current Connections Indicates the number of TCP connections that is handled by the VSAT PEP
client at the moment.
Total Connections Indicates the total number of TCP connections that has been handled by the
PEP client since the PEP functionality was enabled.
Trans Connections Once the number of connections exceeds the threshold Maximum Connections
(i.e. 250 connections), the additional new connections are established without
performance enhancement techniques being applied to these. The parameter
Trans Connections indicates the number of connections that are passed
“transparently” through the VSAT without PEP due to the Maximum
Connection threshold being exceeded.
Failed Connections Indicates the number of connections that were attempted established, but did
not succeed.
Table 8 Parameters displayed when typing ip pep show
18.3 HTTP Accelerator (HTTPA)
HTTP accelerator (HTTPA) can be enabled on the SatLink 2000, 1910 and SatLink 1000 Revision 2.x.
HTTPA is an embedded Intercepting Proxy Cache (IPC) that pre-fetches objects found by reference in
accessed web pages. The internal VSAT DNS server is used to resolve the URL’s. Pre-fetching speeds up
web browsing over the satellite link through the use of parallel connections to several servers. HTTPA
does, to some extent, cache objects to reduce response time. This is especially useful in a multi-user
environment.
HTTPA generally improves the user experience when rendering web pages over the satellite link. Note
that the improvement may differ significantly between web pages as these typically have different sizes,
complexities and structures. If an object requested by the HTTP client is found in the SatLink VSAT’s
internal web-cache, the object will be delivered immediately.
When the STM SatLink VSAT is licensed to support HTTP acceleration, the function can be enabled and
disabled. By default the HTTP accelerator is disabled. HTTP acceleration operates in the context of TCP
acceleration. When enabling HTTP acceleration, TCP acceleration is also enabled in the currently
configured TCP acceleration mode, ref. section 18.2.
To enable HTTPA:
# ip pep enable httpa
To disable HTTPA:
# ip pep disable httpa
To check HTTPA status:
To Next Page
Loading...
