Posts Tagged ‘WAN optimization’

Long Fat Pipes: TCP WSCALE, TCP SACK and Time Stamp Options

October 14th, 2013 No comments

Long Fat Pipes
High-capacity packet satellite channels are LFN’s  (Delay 4 x 35‘800 km = 470ms RTT) and modern terrestrial long-haul fibre-optic paths will also fall into the LFN class. There are three fundamental performance problems with the current TCP  over LFNs:

• Window Size Limit (2^16 or max 65k bytes) – Remedy: TCP option “Window scale”
• Recovery from Segment Losses – Remedy: TCP option “selective acknowledgement”
• Round-Trip Measurement – Remedy: TCP option “Time stamp” Read more…

Understanding HTTP Pipelining and Connection Jumping

August 10th, 2013 No comments

Browsers can setup two or more TCP connections to an HTTP server to facilitate parallel downloads. As the browser parses the Web page it is aware of which objects it needs to download.

Rather than send the requests in series over a single connection, the requests are sent over parallel connections to enable faster downloading of the Web page. Another technique used by browsers to improve the performance is “HTTP pipelining”. Read more…

Useful Riverbed SteelHead Wireshark Filters

June 16th, 2012 No comments

Useful Wireshark filters

To Find Inner channel splice setup: eq 0x1

Using Riverbed Wireshark 1.8.2 you can use a new feature to find all inner channel traffic for a conversation. You can for instance use the Inner channel splice setup filter eq 0x1 to display all splice setups or some other method.

When you have identified the splice connection you are interested in you can then right click on the connection in Wireshark and choose the ‘Find the inner channel’ option to try to locate the entire inner channel connection. You can also right click on any part of an optimised connection to obtain the same result.

Read more…

Verify My Riverbed RCSP-W Status

August 4th, 2011 No comments

Click to view Certificate in new window


Click to verify this using: VBCBEVSKCEF4QEQW

Categories: Uncategorized Tags:

TCP Options and Riverbed WAN Acceleration Appliances

March 14th, 2011 No comments

Normal TCP options are Type 0 (End of Option List), 1 (No-Operation), 2 (Maximum Segment Size, len 4), 3 (WSOPT – Window Scale, len 3), 4 (SACK Permitted, len 2), 5 (SACK, len N), and 8 (TSOPT – Time Stamp Option, len 10). Read more…

Creators of TCPDUMP, WinPcap, and Wireshark share their story

January 27th, 2011 No comments

At a recent Riverbed Technology event in Denver, Colorado, Steve McCanne, Loris Degioanni, and Gerald Combs shared the stage and told the story of the history behind their inventions TCPDUMP, WinPcap, and Wireshark. To view the video: Read more…

Disabling SMB v2.0 on Windows Vista / Win7 / Server 2008

October 14th, 2010 No comments

Server Message Block (SMB) Protocol  is the file sharing protocol used by default on Windows-based computers. SMB 1.0 was designed for early Windows network operating systems such as Microsoft LAN Manager and Windows for Workgroups, but until Windows Server 2008 and Vista, all Microsoft-based operating systems continued to use it more or less in its original format.

SMB 2.0 was introduced in Windows Vista and Windows Server 2008. SMB 2.0 is designed for the needs of the next generation of file servers. Windows Server 2008 and Windows Vista support both SMB 1.0 and SMB 2.0 in order to preserve backward compatibility. Read more…

Cloud Computing Application Acceleration with Riverbed Virtual Steelhead

August 24th, 2010 No comments

Moving your applications into “the cloud” means that round-trip times and protocol and application latency can become a serious issue.

The Riverbed Virtual Steelhead Appliance, a software version of Riverbed Technology’s WDS solution is worth considering:
Read more…

Categories: Network Design Tags:

The Riverbed Services Platform (RSP)

August 24th, 2010 No comments

Bob Gilbert discusses how Riverbed Technology RSP provides “one-box” solution for local delivery of virtualized industry-standard applications, speeding up your network:

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Categories: Network Design Tags: