:param host_suffix: specified else default is 1. For example: if equals to 3 (s3,h3)
:param hosts_per_switch: Number of hosts be connected to the switch. Default is 1.
"""
+
def __init__(self, host_suffix=1, hosts_per_switch=1, **opts):
Topo.__init__(self, **opts)
switch = self.addSwitch('s%s' % host_suffix)