mininet VERSION 2.1.0+ ovs-vsctl (Open vSwitch) 2.1.0 OpenDaylight with OF13
Ubuntu 14.04 in VirtualBox I have a mininet topology which I created with a python script. I created a script which uses ovs-ofctl to add flows to the switches. The problem which I am having is that it seems that when i exit mininet and OpenDaylight and RESTART BOTH PROGRAMS I can see that the mapping between interface names (example s3-eth1) and port numbers is CHANGING. This means that the script I created for adding flows no longer works. I can see the changes by using sudo ovs-ofctl show s1 Can someone tell me how to prevent this change when restarting mininet (or OpenDaylight or Ubuntu)? Really frustrating. sudo ovs-ofctl show s3 OFPT_FEATURES_REPLY (xid=0x2): dpid:0000000000000003 n_tables:254, n_buffers:256 capabilities: FLOW_STATS TABLE_STATS PORT_STATS QUEUE_STATS ARP_MATCH_IP actions: OUTPUT SET_VLAN_VID SET_VLAN_PCP STRIP_VLAN SET_DL_SRC SET_DL_DST SET_NW_SRC SET_NW_DST SET_NW_TOS SET_TP_SRC SET_TP_DST ENQUEUE 1(s3-eth2): addr:9e:fc:2c:66:e4:63 config: 0 state: 0 current: 10GB-FD COPPER speed: 10000 Mbps now, 0 Mbps max 2(s3-eth1): addr:5e:42:96:e9:47:92 << S3-ETH1 WAS PORT 3 LAST TIME I RAN MININET. WHY DID IT CHANGE?? config: 0 state: 0 current: 10GB-FD COPPER speed: 10000 Mbps now, 0 Mbps max 3(s3-eth3): addr:1e:b0:98:07:23:c9 << S3-ETH3 WAS PORT 2 LAST TIME I RAN MININET. why did it change?? config: 0 state: 0 current: 10GB-FD COPPER speed: 10000 Mbps now, 0 Mbps max 4(s3-eth4): addr:72:86:0e:af:dd:9a config: 0 state: 0 current: 10GB-FD COPPER speed: 10000 Mbps now, 0 Mbps max LOCAL(s3): addr:2a:74:82:09:4a:44 config: 0 state: 0 speed: 0 Mbps now, 0 Mbps max OFPT_GET_CONFIG_REPLY (xid=0x4): frags=normal miss_send_len=0 Thanks for any help. Rod
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