Question

我有负载均衡器应用程序，可在两台不同交换机the topology like the picture上连接的两台服务器之间取得平衡当我从第一个域发送流量并且选择是来自第二个域的服务器时，只有syn数据包到达，然后RST从客户端发送到服务器

平衡器的代码是：

def handle_request_on_server2 (self, packet, event, server):

   "Handling request on server2"

   msg = of.ofp_flow_mod()
   msg.idle_timeout = IDLE_TIMEOUT
   msg.hard_timeout = HARD_TIMEOUT
   msg.buffer_id = None
   msg.priority= 500
   msg.data = event.ofp # Forward the incoming packet

   msg.match.in_port = event.port
   print "in_port = ", event.port
   msg.match.dl_src = packet.src
   print "packet src mac = ", packet.src
   msg.match.dl_dst = LOAD_BALANCER_MAC
   msg.match.dl_type = ethernet.IP_TYPE
   msg.match.nw_src = packet.next.srcip
   msg.match.nw_dst = LOAD_BALANCER_IP 

   # Append actions
   # Set the dst IP and MAC to load balancer's
   # Forward the packet to server's port
   msg.actions.append(of.ofp_action_nw_addr.set_dst(server.ip))
   msg.actions.append(of.ofp_action_dl_addr.set_dst(server.mac))
   msg.actions.append(of.ofp_action_output(port = server.port))
   print "output port = ", server.port
   self.connection.send(msg)

   "  Install reverse rule from server2 to the client in domain1 "

   msg = of.ofp_flow_mod()
   msg.idle_timeout = IDLE_TIMEOUT
   msg.hard_timeout = HARD_TIMEOUT
   msg.buffer_id = None
   msg.priority = 500

   msg.match.in_port = 1
   msg.match.dl_src = server.mac
   msg.match.dl_dst = packet.dst
   msg.match.dl_type = ethernet.IP_TYPE
   msg.match.nw_src = server.ip
   msg.match.nw_dst = packet.next.srcip

   # Append actions
   # Set the src IP and MAC to load balancer's
   # Forward the packet to client's port
   msg.actions.append(of.ofp_action_nw_addr.set_src(LOAD_BALANCER_IP))
  msg.actions.append(of.ofp_action_dl_addr.set_src(LOAD_BALANCER_MAC))
   msg.actions.append(of.ofp_action_output(port = event.port))

   self.connection.send(msg)

当我在两台交换机上看到流表时，我看到正确安装了流量。谁能告诉我这是什么问题？

两个服务器连接到pox控制器上的不同开关时的负载平衡

0 个答案: