Hi Matt, For task "OVS collectd interface/port state monitoring", which parts should be monitored? For example: Bridge, Port. https://storyboard.openstack.org/#!/story/2002948 https://bugs.launchpad.net/starlingx/+bug/1834512 Bridge "br-phy1" Port "br-phy1" Interface "br-phy1" type: internal Port "eth1" Interface "eth1" type: dpdk options: {dpdk-devargs="0000:18:00.1", n_rxq="1"} Port "lldp8a3c28ca-7f" Interface "lldp8a3c28ca-7f" type: internal The command "ovs-ofctl dump-ports-desc $ovs_bridge" can be used with collectd for both OVS and OVS-DPDK. The link status for interfaces can be detected as below: For OVS: After pull the cabel: controller-0:/home/sysadmin# ovs-ofctl dump-ports-desc br-phy0 OFPST_PORT_DESC reply (xid=0x2): 1(enp51s0f3): addr:0c:c4:7a:ff:5f:ef config: 0 state: LINK_DOWN current: COPPER AUTO_NEG advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD COPPER AUTO_NEG AUTO_PAUSE supported: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD COPPER AUTO_NEG AUTO_PAUSE speed: 0 Mbps now, 1000 Mbps max 2(phy-br-phy0): addr:1a:0a:21:03:6a:1e config: 0 state: 0 speed: 0 Mbps now, 0 Mbps max LOCAL(br-phy0): addr:0c:c4:7a:ff:5f:ef config: PORT_DOWN state: LINK_DOWN speed: 0 Mbps now, 0 Mbps max After plug in the cable: controller-0:/home/sysadmin# ovs-ofctl dump-ports-desc br-phy0 OFPST_PORT_DESC reply (xid=0x2): 1(enp51s0f3): addr:0c:c4:7a:ff:5f:ef config: 0 state: 0 current: 1GB-FD COPPER AUTO_NEG advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD COPPER AUTO_NEG AUTO_PAUSE supported: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-FD COPPER AUTO_NEG AUTO_PAUSE speed: 1000 Mbps now, 1000 Mbps max 2(phy-br-phy0): addr:1a:0a:21:03:6a:1e config: 0 state: 0 speed: 0 Mbps now, 0 Mbps max LOCAL(br-phy0): addr:0c:c4:7a:ff:5f:ef config: PORT_DOWN state: LINK_DOWN speed: 0 Mbps now, 0 Mbps max For OVS-DPDK: After pull the cabel: controller-0:/home/sysadmin# ovs-ofctl dump-ports-desc br-phy1 OFPST_PORT_DESC reply (xid=0x2): 1(eth1): addr:3c:fd:fe:da:e8:85 config: 0 state: LINK_DOWN current: AUTO_NEG speed: 0 Mbps now, 0 Mbps max 2(lldp8a3c28ca-7f): addr:52:97:0b:a4:ef:23 config: 0 state: 0 current: 10MB-FD COPPER speed: 10 Mbps now, 0 Mbps max LOCAL(br-phy1): addr:3c:fd:fe:da:e8:85 config: 0 state: 0 current: 10MB-FD COPPER speed: 10 Mbps now, 0 Mbps max After plug in the cable: controller-0:/home/sysadmin# ovs-ofctl dump-ports-desc br-phy1 OFPST_PORT_DESC reply (xid=0x2): 1(eth1): addr:3c:fd:fe:da:e8:85 config: 0 state: 0 current: 10GB-FD AUTO_NEG speed: 10000 Mbps now, 0 Mbps max 2(lldp8a3c28ca-7f): addr:52:97:0b:a4:ef:23 config: 0 state: 0 current: 10MB-FD COPPER speed: 10 Mbps now, 0 Mbps max LOCAL(br-phy1): addr:3c:fd:fe:da:e8:85 config: 0 state: 0 current: 10MB-FD COPPER speed: 10 Mbps now, 0 Mbps max Best Regards, Xu, Chenjie