yum install pip
yum -y install python-pip
yum install epel-release
yum install python-pip
pip install --upgrade pip
pip install --pre scapy[basic]

Lots of examples Here
Other ways of generating traffic:

# A-end
yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum install pv -y
dd if=/dev/urandom bs=1000 count=1000 | pv -L 10M | nc 10.80.8.1 4444
# B-end
yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
yum install nmap
nc -kl 4444