NETWORK TAP
A Network Tap creates a permanent access port for passively monitoring all traffic on a link without data stream interference or the introduction a potential point of failure.
Cisco Whitepaper ...."The switch treats SPAN data with a lower priority than regular port-to-port data." In other words, if any resource under load must choose between passing normal traffic and SPAN data, the SPAN loses and the mirrored frames are arbitrarily discarded. This rule applies to preserving network traffic in any situation.
Knowing that the SPAN port arbitrarily drops traffic under specific load conditions, what strategy should users adopt so as not to miss frames? "the best strategy is to make decisions based on the traffic levels of the configuration and when in doubt to use the SPAN port only for relatively low-throughput situations."
If span ports are the only option syntax for the various switch vendors is contained here, Switch Port Mirroring
For more information about Network Taps :
VSS MONITORING, INC. ★★★★★0 reviews
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VSS monitoring’s Taps cover both copper and fiber media from T1 to 10Gig. The Taps include the 1X1 series (1 network X 1 monitoring device), 1XN series and also the NX1 series (Tap Switches). The aggregation taps have up to 64MB of memory to buffer ...
VendorVSS monitoring, Inc. Pricing ModelCommercial Modified2009-04-30
SECURE TAPS ★★★★★2 reviews
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Intrusion offers a suite of secure network taps which enable easy, fast, and robust deployment of any of Intrusion's network security appliances. Using a Secure Tap is the best method for deploying network appliances. Connects to Your Network in Second ...
VendorIntrusion Inc Pricing ModelCommercial Modified2010-12-07
NET OPTICS ★★★★★0 reviews
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Fast and reliable, our passive network taps provide access for security and network management devices on all types of networks. - 100% visibility to link traffic for your security and network monitoring tools - In-line link failover protection - Acc ...
VendorNet Optics, Inc Pricing ModelCommercial Modified2010-12-07
NETWORK CRITICAL 0 reviews
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Network Critical is the premier provider of Access Technology Solutions for today's datacenter. Our Network TAPs give you the ability to safely, securely and economically see what is happening on your network. We provide enterprise Ethernet TAP access sol ...
VendorNetwork Critical Ltd Pricing ModelCommercial Modified2009-04-30
FINISAR 0 reviews
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Fault-tolerant, copper or optical, full-duplex TAPs maximize visibility and minimize link downtime on switched LANs and SANs. Finisar TAPs provide access to all network traffic from both sides of a full-duplex link at line rate. Completely invisible and n ...
VendorFinisar Corporation Pricing ModelCommercial Modified2009-02-25
DATACOM SYSTEMS 0 reviews
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The 10/100 Full Duplex Ethernet Tap provides network monitoring tools with permanent 24x7 passive monitoring access to 10/100 BaseT Ethernet network segments. Our passive tap technology features exclusive, fault tolerant "no break the link" desi ...
VendorDatacom Systems Pricing ModelCommercial Modified2009-09-21
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