I am using the newest rest_router.py. Usually, it has started correctly. However, if communication which raised bandwidh using the iperf command etc, rest_router.py may be downed as follows.
At this time, I think that the ARP packet has overflowed in the network by the side of OpenFlowSwitch node. How should it be coped with? ---------------------------------------------------------------- ~$ ryu-manager --version ryu-manager 3.3 ~$ ryu-manager ryu/ryu/app/rest_router.py loading app ryu/ryu/app/rest_router.py loading app ryu.controller.ofp_handler creating context dpset creating context wsgi instantiating app ryu/ryu/app/rest_router.py instantiating app ryu.controller.ofp_handler (2606) wsgi starting up on http://0.0.0.0:8080/ [RT][INFO] switch_id=0123456789abcd03: Set SW config for TTL error packet in. ... [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) ... [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. ... [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. [RT][INFO] switch_id=0123456789abcd02: Packet is dropped, MAX_SUSPENDPACKETS exceeded. [RT][INFO] switch_id=0123456789abcd02: Set implicit routing flow [cookie=0x3] [RT][INFO] switch_id=0123456789abcd02: Receive ARP reply from [192.168.204.2] to router port [192.168.204.1]. [RT][INFO] switch_id=0123456789abcd02: Send suspend packet to [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send suspend packet to [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send suspend packet to [192.168.204.2]. ... [RT][INFO] switch_id=0123456789abcd02: Send suspend packet to [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send suspend packet to [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Set implicit routing flow [cookie=0x3] [RT][INFO] switch_id=0123456789abcd02: Receive ARP reply from [192.168.204.2] to router port [192.168.204.1]. [RT][INFO] switch_id=0123456789abcd02: Set implicit routing flow [cookie=0x3] ... [RT][INFO] switch_id=0123456789abcd02: Receive ARP reply from [192.168.204.2] to router port [192.168.204.1]. [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Receive IP packet from [192.168.200.2] to an internal host [192.168.204.2]. [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) ... [RT][INFO] switch_id=0123456789abcd02: Send ARP request (flood) [RT][INFO] switch_id=0123456789abcd02: Set implicit routing flow [cookie=0x3] [RT][INFO] switch_id=0123456789abcd02: Receive ARP reply from [192.168.204.2] to router port [192.168.204.1]. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. ... [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. [RT][INFO] switch_id=0123456789abcd02: ARP reply wait timer was timed out. hub: uncaught exception: Traceback (most recent call last): File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 48, in _launch func(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/ryu/base/app_manager.py", line 110, in _event_loop handler(ev) File "/usr/local/lib/python2.7/dist-packages/ryu/controller/dpset.py", line 157, in dispacher_change self.register(datapath) File "/usr/local/lib/python2.7/dist-packages/ryu/controller/dpset.py", line 100, in register assert dp.id not in self.dps AssertionError ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. 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