Network Monitoring and Data Center Operation - SOI-Asia
Network Monitoring and Data Center Operation - SOI-Asia
Network Monitoring and Data Center Operation - SOI-Asia
- No tags were found...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Netflow - Flow <strong>Data</strong> -Flow data export• Enable NetFlow on the routerThere is difference in architecture between Cisco <strong>and</strong> Juniper routersTake care! the load of a router does not become high!- Check CPU, memory, b<strong>and</strong>width, sampling rateFlow data collection & Analysis• Prepare the software for receiving flow-export dataflow-tools http://www.splintered.net/sw/flow-tools/cflowd http://www.caida.org/tools/measurement/cflowd/Cisco : NetflowCollector• Analyze traffic from raw data with softwareflow-scan http://net.doit.wisc.edu/~plonka/FlowScan/(If you want to graph-ize analysis data, I recommend you to use RRDtool)Cisco : CiscoWorks• Source <strong>and</strong> destination IP address• Source <strong>and</strong> destination TCP/UDP ports• Packet <strong>and</strong> byte counts• Routing information (next-hop address, source autonomous system (AS)number, destination AS number, source prefix mask, destination prefixmask)Netflow - Example -Netflow Example28
Change language