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Homework and Emergencies Emergency UNIX and Linux Support using multiple iperf instances for performance testing Post 302449005 by ppucci on Friday 27th of August 2010 09:08:01 PM
Old 08-27-2010
using multiple iperf instances for performance testing

Hello all!

I have the need to performance-test a MPLS switch, I was thinking of using iperf to accomplish the task.

I had in mind using a linux box with a Gigabit interface connected to a L2 switch on a 802.1Q trunk. In the interface I would create 20 VLANs with 20 different IP subnets.

With that set, I was thinking of running 20 different iperf client instances to send 20 different, constant IP packet streams. The L2 switch would open the VLAN tags and send each different VLANs upstream to the MPLS switch through different ports.

Each VLAN would arrive in different VRF-connected interfaces, accomplishing what I am required to do so. The MPLS switch would then deliver it to a second switch, where I would have another linux box running another 20-iperf instances

I need help mainly with setting the 20 different iperf instances (both client-side and server-side).

Regards,

Persio
 

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fence_mcdata(8) 					      System Manager's Manual						   fence_mcdata(8)

NAME
fence_mcdata - I/O Fencing agent for McData FC switches SYNOPSIS
fence_mcdata [OPTION]... DESCRIPTION
fence_mcdata is an I/O Fencing agent which can be used with McData FC switches. It logs into a McData switch via telnet and disables a specified port. Disabling the port which a machine is connected to effectively fences that machine. Lengthy telnet connections to the switch should be avoided while a GFS cluster is running because the connection will block any necessary fencing actions. fence_mcdata accepts options on the command line as well as from stdin. fenced sends parameters through stdin when it execs the agent. fence_mcdata can be run by itself with command line options which is useful for testing. After a fence operation has taken place the fenced machine can no longer connect to the McData FC switch. When the fenced machine is ready to be brought back into the GFS cluster (after reboot) the port on the McData FC switch needs to be enabled. This can be done by running fence_mcdata and specifying the enable action. Vendor URL: http://www.brocade.com OPTIONS
-a IPaddress IP address of the switch. -h Print out a help message describing available options, then exit. -l login Username name for the switch. -n port The port number to disable on the switch. -o action The action required. disable (default) or enable. -p password Password for login. -S path Full path to an executable to generate the password for login. -q Quiet mode: print only error messages. -V Print out a version message, then exit. STDIN PARAMETERS
agent = < param > This option is used by fence_node(8) and is ignored by fence_mcdata. ipaddr = < hostname | ip > IP address or hostname of the switch. login = < param > Login name. option = < param > The action required. disable (default) or enable. passwd = < param > Password for login. passwd_script = < param > Full path to an executable to generate the password for login. port = < param > The port number to disable on the switch. SEE ALSO
fence(8), fence_node(8) fence_mcdata(8)
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