doc: Updated topotest.rst doc with iperf

1. We are using iperf to send IGMP join and traffic for multicast suites. Iperf must be
   used to run all multicast suite

Signed-off-by: kuldeepkash <kashyapk@vmware.com>

diff --git a/doc/developer/topotests.rst b/doc/developer/topotests.rst
index 3e8987f126154768fd573ebe679810c2ebc1d1f0..16901c08aba5b832214095091dc5784e8ac1a206 100644 (file)
--- a/doc/developer/topotests.rst
+++ b/doc/developer/topotests.rst
@@ -21,6 +21,7 @@ Installing Mininet Infrastructure
    apt-get install mininet
    apt-get install python-pip
    apt-get install iproute
+   apt-get install iperf
    pip install ipaddr
    pip install "pytest<5"
    pip install exabgp==3.4.17 (Newer 4.0 version of exabgp is not yet