Re: [pox-dev] switch disconnecting
this is my code: / for i in range (0,5): while(j5): self.request_FlowStatus( dpid[j]) time.sleep(0.1) self.request_FlowStatus(a dpid[j]) On Sun, Jul 6, 2014 at 10:28 AM, Murphy McCauley murphy.mccau...@gmail.com wrote: Can you send a snippet of code that causes the problem? The POX and/or switch logs? Etc.? (The last item of the POX FAQ has a bunch of suggestions.) Also... how long does this loop run for? In general, you don't want to have any event handler run for very long. If it's taking many seconds, other switches may decide the connection is dead. -- Murphy On Jul 5, 2014, at 10:42 PM, farshad tajedin farshad.taje...@gmail.com wrote: hi i have a problem with switches in my topology, when i message to switches in a for loop i see some of switches disconnect and then connect again i dont know why?!!! please help me -- Best Regards Farshad Tajedin -- Best Regards Farshad Tajedin
[pox-dev] lib/addresses.py is quite broken
Hi Murphy. TLDR: addresses.py should be rerwitten from scratch I come up against a following problem: cd pox/lib python import addresses print addresses.IPAddr(255.255.255.0) == addresses.IPAddr6(::1) ... File addresses.py, line 634, in __cmp__ return -cmp(other,self) File addresses.py, line 634, in __cmp__ return -cmp(other,self) File addresses.py, line 634, in __cmp__ return -cmp(other,self) File addresses.py, line 634, in __cmp__ return -cmp(other,self) RuntimeError: maximum recursion depth exceeded while calling a Python object In general, there might be an easy fix but __cmp__ is actually deprecated by Python3. And, does it really make sense to have ordering on IP addresses? I mean, implementing equality should be sufficient and whoever wants to do something fancy (sort IP addresses, can just use to_raw() as a key) Moreover, when I was looking at the whole source code, I realized it is really a huge mess. I think the whole file should be rewritten and maybe be more strict about api (right now, IPAddr6 can take arguments in so many different formats that the constructor is one big if-then maze. Similarly, there are many redundant accessors (e.g. toRaw(), @property raw, self._value) as well as two competing style guides (looks like functions are camelCaps and sometimes lower_case) Not to mention that the constructors do big amount of magic which is completely undocumented. And there are obviously broken parts such as __init__() returning something else than None import addresses addresses.IPAddr6() Traceback (most recent call last): File stdin, line 1, in module TypeError: __init__() should return None, not 'IPAddr6' Similarly, converting MAC addresses to IPV6 (IPAddr6.set_mac() function) seems to be also quite hack-ish and I see no normal reason why this should be a part of an api Finally, running python addresses.py crashes with RuntimeError: Host part of CIDR address is not zero (['1.1.168.103', '255.255.255.0']) So, to sum up -- I suggest complete rewrite of the file which will hopefully end up with a cleaner API and simpler code. Peter
Re: [pox-dev] switch disconnecting
On Tue, Jul 15, 2014 at 11:30 AM, Murphy McCauley murphy.mccau...@gmail.com wrote: This appears to be an infinite loop or an incomplete snippet. On Jul 14, 2014, at 11:56 PM, farshad tajedin farshad.taje...@gmail.com wrote: this is my code: / for i in range (0,5): while(j5): self.request_FlowStatus( dpid[j]) time.sleep(0.1) self.request_FlowStatus(a dpid[j]) On Sun, Jul 6, 2014 at 10:28 AM, Murphy McCauley murphy.mccau...@gmail.com wrote: Can you send a snippet of code that causes the problem? The POX and/or switch logs? Etc.? (The last item of the POX FAQ has a bunch of suggestions.) Also... how long does this loop run for? In general, you don't want to have any event handler run for very long. If it's taking many seconds, other switches may decide the connection is dead. -- Murphy On Jul 5, 2014, at 10:42 PM, farshad tajedin farshad.taje...@gmail.com wrote: hi i have a problem with switches in my topology, when i message to switches in a for loop i see some of switches disconnect and then connect again i dont know why?!!! please help me -- Best Regards Farshad Tajedin -- Best Regards Farshad Tajedin omg sorry i forgot to write while counter: for i in range (0,5): while(j5): self.request_FlowStatus(dpid[j]) time.sleep(0.1) self.request_FlowStatus(dpid[j]) j+=1 -- Best Regards Farshad Tajedin
