Ok - I figured out a way to get the interface mapping. On sFlow Trend, locate the interface number and on OVS, run as root the below command to get the corresponding OVS
# ovsdb-client dump | grep 11522715
b300d6ce-7c19-44dd-9ee4-0f250fabd729 up {} {} [] [] [] [] [] [] [] full [] {} 11522715 0 0 [] 0 1000000000000 down {} [] "a0:36:9f:d5:64:1b" 1500 [] "ens787f3" 9 9 {dpdk-devargs="0000:81:00.3"} {} {"rx_128_to_255_packets"=0, "rx_1_to_64_packets"=0, "rx_256_to_511_packets"=0, "rx_512_to_1023_packets"=0, "rx_65_to_127_packets"=0, rx_broadcast_packets=0, rx_bytes=0, rx_dropped=0, rx_errors=0, rx_jabber_errors=0, rx_packets=0, "tx_128_to_255_packets"=0, "tx_1_to_64_packets"=0, "tx_256_to_511_packets"=0, "tx_512_to_1023_packets"=0, "tx_65_to_127_packets"=0, tx_broadcast_packets=0, tx_bytes=0, tx_dropped=2177059, tx_errors=0, tx_multicast_packets=0, tx_packets=0} {driver_name="net_e1000_igb", max_hash_mac_addrs="0", max_mac_addrs="32", max_rx_pktlen="1518", max_rx_queues="8", max_tx_queues="8", max_vfs="0", max_vmdq_pools="8", min_rx_bufsize="256", numa_id="1", pci-device_id="0x1521", pci-vendor_id="0x32902", port_no="8"} dpdk
# ovsdb-client dump | grep 1297199
0c7cd9f9-8f24-41e6-8782-e908bf6be5ff up {} {} [] [] [] [] [] [] [] full [] {} 1297199 0 0 [] 0 1000000000000 down {} [] "b4:96:91:00:88:a7" 1500 [] "ens786f3" 5 5 {dpdk-devargs="0000:05:00.3"} {} {"rx_128_to_255_packets"=0, "rx_1_to_64_packets"=0, "rx_256_to_511_packets"=0, "rx_512_to_1023_packets"=0, "rx_65_to_127_packets"=0, rx_broadcast_packets=0, rx_bytes=0, rx_dropped=0, rx_errors=0, rx_jabber_errors=0, rx_packets=0, "tx_128_to_255_packets"=0, "tx_1_to_64_packets"=0, "tx_256_to_511_packets"=0, "tx_512_to_1023_packets"=0, "tx_65_to_127_packets"=0, tx_broadcast_packets=0, tx_bytes=0, tx_dropped=2177070, tx_errors=0, tx_multicast_packets=0, tx_packets=0} {driver_name="net_e1000_igb", max_hash_mac_addrs="0", max_mac_addrs="32", max_rx_pktlen="1518", max_rx_queues="8", max_tx_queues="8", max_vfs="0", max_vmdq_pools="8", min_rx_bufsize="256", numa_id="0", pci-device_id="0x1521", pci-vendor_id="0x32902", port_no="4"} dpdk
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