301B: BIG-IP LTM Specialist: Maintain and TroubleshootDemo

By F5 · Question Mode

QuestionQ118

Identify and Resolve LTM Device Issues

An LTM device has a fault with a load-balanced trading application that resides on directly connected VLAN vlan-301. The application virtual server is 10.0.0.1:80, with trading-application backend servers on subnet 192.168.0.0/25. The LTM Specialist wants to save a packet capture with the complete payload for external analysis.

Which command should the LTM Specialist run from the LTM device command-line interface?

  • A tcpdump -vvv -w /var/tmp/trace.cap 'net 192.168.0.0/25'
  • B tcpdump -vvv -s 0 -w /var/tmp/trace.cap 'net 192.168.0.0/25'
  • C tcpdump -vvv -nni vlan-301 -w /var/tmp/trace.cap 'net 192.168.0.0/25'
  • D tcpdump -vvv -s 0 -nni vlan-301 -w /var/tmp/trace.cap 'net 192.168.0.0/25'
Explanation

The -s 0 option sets the capture snap length to unlimited, preserving complete packet payloads. The -nni vlan-301 options disable name resolution and select the directly connected VLAN, while -w /var/tmp/trace.cap saves the capture in a PCAP file for external analysis.

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