Top Apache Solr Interview Questions And Answers.Top 70 Hadoop Interview Questions In 2023.Top Splunk Interview Questions and Answers.Top 50 Automation Anywhere Interview Questions and Answers in 2023.Top 50 UiPath Interview Questions and Answers in 2023.Top RPA Interview Questions and Answers.What is the volume of source traffic? Depending on the volume of traffic, you might need to make some performance adjustments to ensure that the system behaves as expected.Does the mirror device generate NATed data (in which case the data contains both internal and external (Internet) representations of traffic)?.Does the SPAN mirror port contain both ingress and egress traffic from all of the ports they are spanning? If yes, then the capacity of the NIC itself is even more important.Can the Network Interface Card (NIC) that receives the mirror data handle the influx of traffic? For example, a 1GB NIC can not handle the data volume from a 10GB port.SPAN collection requires a few additional considerations. Can be challenging to collect from Cloud virtual machines.Īdditional considerations for SPAN collection.Captures everything on the network, which may lead to security considerations.Higher data capture fidelity than with SPAN.No performance impact on network switches.No performance impact on individual machines.Dropped packets are more common than with TAP.May experience resource limitations on network switches.Can be challenging to collect data from Cloud virtual machines.Single point of capture creates a risk of single point of failure.Captures everything on the network, which may raise security considerations.Requires configuration in switch hardware.SPAN causes no performance impact on individual machines.Single point of capture makes data collection easy to set up.Efficiently captures everything on the network.Resources are limited on individual machines.Works on public cloud VMs where SPAN or TAP is not available.More selective data collection (subnet).Fast implementation (using deployment server).This table highlights pros and cons of local, SPAN, and TAP collection architectures. This diagram illustrates a distributed Splunk Stream deployment with a SPAN collection architecture:Ĭonsiderations for local, SPAN, and TAP collection Install Splunk Add-on for Stream Forwarder on a universal forwarder or deploy an Independent Stream Forwarder (ISF), then configure that forwarder as the listener on the SPAN or TAP interface. Switched Port Analyzer (SPAN) and Test Access Port (TAP) collection require that you have an existing collection node that listens to all traffic on a network or network segment using a SPAN port or network TAP. You can configure local collection manually or use the Splunk deployment server. To use local collection, install a universal forwarder and the Splunk Add-on for Stream Forwarder on each host on the network or network segment that you want to monitor. Local collection is useful, for example, to help capture data from individual network nodes in a subnet environment such as a multi-tier web site.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |