How to specify what network interface to use with TTCP or IPERF?
- by Sammy
The PC has two Gigabit Ethernet ports. They function as two separate network adapters. I'm trying to do a simple loopback test between the two. I've tried TTCP and IPERF. They're giving me hard time because I'm using the same physical PC.
Using pcattcp...
On the receiver end:
C:\PCATTCP-0114>pcattcp -r
PCAUSA Test TCP Utility V2.01.01.14 (IPv4/IPv6)
IP Version : IPv4
Started TCP Receive Test 0...
TCP Receive Test
Local Host : GIGA
**************
Listening...: On TCPv4 0.0.0.0:5001
Accept : TCPv4 0.0.0.0:5001 <- 10.1.1.1:33904
Buffer Size : 8192; Alignment: 16384/0
Receive Mode: Sinking (discarding) Data
Statistics : TCPv4 0.0.0.0:5001 <- 10.1.1.1:33904
16777216 bytes in 0.076 real seconds = 215578.95 KB/sec +++
numCalls: 2052; msec/call: 0.038; calls/sec: 27000.000
C:\PCATTCP-0114>
On the transmitter end:
C:\PCATTCP-0114>PCATTCP.exe -t 10.1.1.1
PCAUSA Test TCP Utility V2.01.01.14 (IPv4/IPv6)
IP Version : IPv4
Started TCP Transmit Test 0...
TCP Transmit Test
Transmit : TCPv4 0.0.0.0 -> 10.1.1.1:5001
Buffer Size : 8192; Alignment: 16384/0
TCP_NODELAY : DISABLED (0)
Connect : Connected to 10.1.1.1:5001
Send Mode : Send Pattern; Number of Buffers: 2048
Statistics : TCPv4 0.0.0.0 -> 10.1.1.1:5001
16777216 bytes in 0.075 real seconds = 218453.33 KB/sec +++
numCalls: 2048; msec/call: 0.037; calls/sec: 27306.667
C:\PCATTCP-0114>
It's responding alright. But why does it say 0.0.0.0? Is it passing through only one of the network adapters?
I want 10.1.1.1 to be the server (receiver) and 10.1.1.2 to be the client (transmitter). These are the IP addresses assigned manually to each network adapter. How do I specify these addresses in TTCP?
There is also the IPERF tool which has the -B option. Unfortunately I've been only able to use this option to bind the server to the 10.1.1.1 address. I was unable to bind the client to the 10.1.1.2 address. I might be doing it wrong. Can the -B option be used for both the server as well as the client side? What does the syntax look like for the client?
