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From: Charlie Li <charlie.li@gmail.com>
Date: Wed, 20 Jul 2016 15:02:52 -0500
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Subject: [dpdk-users] How to test l3fwd?
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Hello,

My setup is dpdk-2.2.0 on Fedora 23 Server with kernel 4.5.7.

I have been testing L2 throughput with l2fwd and an Ixia traffic generator.
It works as expected.

Command: ./l2fwd -c 0xf -n 4 -- -p 0x3
Ixia traffic: MAC (Ethernet frames)


Now I am moving to test L3 throughput with l3fwd, but cannot start traffic
from Ixia

Command: ./l3fwd -c 0xf -n 4 -- -p 0x3 --config="(0,0,2)(1,0,3)"
Ixia traffic: IPv4 (IP packets)

My question is:

What are the IP addresses of the two ports?

"LPM: Adding route 0x01010100 / 24 (0)
LPM: Adding route 0x02010100 / 24 (1)"

Does it mean the IP addresses are 1.1.1.0 (netmask 255.255.255.0) for port0
and 2.1.1.0 (netmask 255.255.255.0) for port1?

I set up the following two flows, but Ixia complains "unreachable"

Flow1: Ixia PortA (1.1.1.100) -> DPDK Port0 (1.1.1.0) .........(l3fwd)
........ DPDK Port1 (2.1.1.0) -> Ixia PortB (2.1.1.100)
          Src IP: 1.1.1.100; Dst IP: 2.1.1.100; Gateway: 1.1.1.0

Flow2: Ixia PortB (2.1.1.100) -> DPDK Port1 (2.1.1.0) .........(l3fwd)
........ DPDK Port0 (1.1.1.0) -> Ixia PortA (1.1.1.100)
          Src IP: 2.1.1.100; Dst IP: 1.1.1.100; Gateway: 2.1.1.0

Thanks,
Charlie