there are labels like dpdk-input, ip4-input-no-checksum, ip4-icmp-echo-request and so on. As you know wireshark shows a single entry containing all information about a packet OR in other words wireshark captures packet at the physical layer.
============================================================================= Q1: Which of these labels in VPP act like wireshark?? Q2: How to filter packets base on that label?? I want just one entry per packet containing all packet's info ============================================================================= On Tue, Jan 9, 2018 at 2:41 PM, Mohsin Kazmi (sykazmi) <syka...@cisco.com> wrote: > Hello Holoo, > > > You can find examples of traces in VPP Uses Cases. > > > Specific to VPP packet tracing, please check the following link: > > > https://wiki.fd.io/view/VPP/Command-line_Interface_(CLI)_ > Guide#packet_tracer > > > Apart from that, debug CLI list down the commands: > > > vpp# trace ? > trace add Trace given number of packets > trace filter filter trace output - include > NODE COUNT | exclude NODE COUNT | none > trace frame-queue trace frame-queue (on|off) > vpp# > > I hope that it will help. > > -br > Mohsin > > > ------------------------------ > *From:* vpp-dev-boun...@lists.fd.io <vpp-dev-boun...@lists.fd.io> on > behalf of Holoo Gulakh <holoogul...@gmail.com> > *Sent:* Tuesday, January 9, 2018 11:58 AM > *To:* vpp-dev@lists.fd.io > *Subject:* [vpp-dev] packet capture > > Hi, > In a typical scenario, we usually use wireshark or tcpdump to capture > input/output packets from interfaces and we can use filters to filter them > base on different criteria such as protocol. > My question is that : when VPP handles one interface, then this interface > is out of kernel's control so we can't capture those packets using > wireshark or tcpdump. > > =============================================== > What is an alternative in VPP for wireshark or tcpdump?? > =============================================== > > I read somewhere that there is a command named "trace" in VPP. > Is it correct?? if so, how to use it?? how to filter packets?? what is the > representation format of packets?? how to filter them base on network stack > layers?? > I want to use this tool for debugging my scenarios which uses VPP as > dataplane. >
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