- Preface
- About Cisco Enterprise NFVIS
- Installing Cisco Enterprise NFVIS Using the KVM Console
- Setting Up System Configuration
- Cisco Network Plug-n-Play Support
- VM Life Cycle Management
- VM Deployment Scenarios
- SPAN Session or Port Mirroring
- Configuring Packet Capture
- VM Image Packaging
- Upgrading Cisco Enterprise NFVIS
- Configuring vBranch High Availability
- Cisco ENCS Single WAN IP Deployment Scenarios
- Resetting to Factory Default
- Event Notifications
- Syslog Support
- SNMP Support on NFVIS
- TACACS and RADIUS Support on NFVIS
- ENCS Switch Configuration
- Configuring Secondary IP and Source Interface
Configuring Packet Capture
The Packet Capture feature helps you capture all packets being transmitted and received over physical and virtual network interface controllers (physical port and vNIC) for analysis. These packets are inspected to diagnose and solve network problems. Packets are stored in the/data/intdatastore/pktcaptures folder on the host server.
Benefits
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You can customize the configuration to capture specific packets such as Internet Control Message Protocol (ICMP), TCP, UDP, and Address Resolution Protocol (ARP).
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You can specify a time period over which packets are captured. The default is 60 seconds.
To configure packet capture on a physial port:
configure terminal
tcpdump port eth0
Output: pcap-location /data/intdatastore/pktcaptures/tcpdump_eth0.pcap
To configure packet capture on a vNIC:
configure terminal
tcpdump vnic tenant-name admin deployment-name 1489084431 vm-name ROUTER vnic-id 0 time 30
Output: pcap-location /data/intdatastore/pktcaptures/1489084431_ROUTER_vnic0.pcap
Types of Errors
Error |
Scenario |
---|---|
Port/vnic not found |
When non-existing interface is given as input. |
File/directory not created |
When the system is running out of disk space. |
The tcpdump command fails |
When the system is running out of disk space. |
These errors are logged in the nfvis_config.log. By default, warnings and errors are logged,
Packet Capture APIs and Commands
APIs |
Commands |
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