Dear All,
I am currently working on a project to implement multicast using SDN. As
part of the module I am required to identify the immediate neighbours of a
switch.
Following is the code sample which I have written. The sample shall return
all the links irrespective of the switch.
Can you please tell me if there is a way I can only derive immediate
neighbours of a switch.
SNIPPET:
dpid_list=[]
for dp in self.datapaths.values():
dpid_list.append(dp.id)
dpid_list.sort()
for x in dpid_list:
switch_id=x
list_of_links=get_link(self,dpid=switch_id)
print 'Switch---'+str(switch_id)
#print list_of_links
for link in list_of_links:
print str(link.src)+'----------'+str(link.dst)
OUTPUT
Switch---1
Port<dpid=1, port_no=2, LIVE>----------Port<dpid=6, port_no=1, LIVE>
Port<dpid=1, port_no=2, LIVE>----------Port<dpid=5, port_no=2, LIVE>
Port<dpid=1, port_no=1, LIVE>----------Port<dpid=4, port_no=2, LIVE>
Port<dpid=1, port_no=1, LIVE>----------Port<dpid=3, port_no=3, LIVE>
Port<dpid=1, port_no=1, LIVE>----------Port<dpid=2, port_no=2, LIVE>
Port<dpid=1, port_no=2, LIVE>----------Port<dpid=7, port_no=1, LIVE>
Switch---2
Port<dpid=2, port_no=3, LIVE>----------Port<dpid=4, port_no=2, LIVE>
Port<dpid=2, port_no=1, LIVE>----------Port<dpid=3, port_no=3, LIVE>
Port<dpid=2, port_no=2, LIVE>----------Port<dpid=6, port_no=1, LIVE>
Port<dpid=2, port_no=2, LIVE>----------Port<dpid=5, port_no=2, LIVE>
Port<dpid=2, port_no=2, LIVE>----------Port<dpid=1, port_no=1, LIVE>
Port<dpid=2, port_no=2, LIVE>----------Port<dpid=7, port_no=1, LIVE>
Switch---3
Port<dpid=3, port_no=3, LIVE>----------Port<dpid=2, port_no=1, LIVE>
Port<dpid=3, port_no=3, LIVE>----------Port<dpid=4, port_no=2, LIVE>
Port<dpid=3, port_no=3, LIVE>----------Port<dpid=7, port_no=1, LIVE>
Port<dpid=3, port_no=3, LIVE>----------Port<dpid=5, port_no=2, LIVE>
Port<dpid=3, port_no=3, LIVE>----------Port<dpid=6, port_no=1, LIVE>
Port<dpid=3, port_no=3, LIVE>----------Port<dpid=1, port_no=1, LIVE>
------------------------------------------------------------------------------
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