Frame 2254: 90 bytes on wire (720 bits), 90 bytes captured (720 bits) Encapsulation type: Ethernet (1) Arrival Time: Jul 22, 2017 02:50:06.592313000 UTC UTC Arrival Time: Jul 22, 2017 02:50:06.592313000 UTC Epoch Arrival Time: 1500691806.592313000 [Time shift for this packet: 0.000000000 seconds] [Time delta from previous captured frame: 0.000000000 seconds] [Time delta from previous displayed frame: 0.000000000 seconds] [Time since reference or first frame: 392.066964000 seconds] Frame Number: 2254 Frame Length: 90 bytes (720 bits) Capture Length: 90 bytes (720 bits) [Frame is marked: False] [Frame is ignored: False] [Protocols in frame: eth:ethertype:ip:tcp] Ethernet II, Src: Dell_c3:1b:e9 (00:26:b9:c3:1b:e9), Dst: Cisco_01:e9:5c (00:09:e8:01:e9:5c) Destination: Cisco_01:e9:5c (00:09:e8:01:e9:5c) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) Source: Dell_c3:1b:e9 (00:26:b9:c3:1b:e9) .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default) .... ...0 .... .... .... .... = IG bit: Individual address (unicast) Type: IPv4 (0x0800) [Stream index: 3] Internet Protocol Version 4, Src: 172.16.45.52, Dst: 72.21.81.200 0100 .... = Version: 4 .... 0101 = Header Length: 20 bytes (5) Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT) 0000 00.. = Differentiated Services Codepoint: Default (0) .... ..00 = Explicit Congestion Notification: Not ECN-Capable Transport (0) Total Length: 76 Identification: 0x00ef (239) 010. .... = Flags: 0x2, Don't fragment 0... .... = Reserved bit: Not set .1.. .... = Don't fragment: Set ..0. .... = More fragments: Not set ...0 0000 0000 0000 = Fragment Offset: 0 Time to Live: 128 Protocol: TCP (6) Header Checksum: 0x1601 [validation disabled] [Header checksum status: Unverified] Source Address: 172.16.45.52 Destination Address: 72.21.81.200 [Destination GeoIP: US] [Destination GeoIP Country: United States] [Source or Destination GeoIP Country: United States] [Destination GeoIP ISO Two Letter Country Code: US] [Source or Destination GeoIP ISO Two Letter Country Code: US] [Destination GeoIP Latitude: 37.751] [Source or Destination GeoIP Latitude: 37.751] [Destination GeoIP Longitude: -97.822] [Source or Destination GeoIP Longitude: -97.822] [Stream index: 32] Transmission Control Protocol, Src Port: 49164, Dst Port: 80, Seq: 369, Ack: 17577, Len: 0 Source Port: 49164 Destination Port: 80 [Stream index: 47] [Stream Packet Number: 38] [Conversation completeness: Incomplete, DATA (15)] ..0. .... = RST: Absent ...0 .... = FIN: Absent .... 1... = Data: Present .... .1.. = ACK: Present .... ..1. = SYN-ACK: Present .... ...1 = SYN: Present [Completeness Flags: ··DASS] [TCP Segment Len: 0] Sequence Number: 369 (relative sequence number) Sequence Number (raw): 4247731854 [Next Sequence Number: 369 (relative sequence number)] Acknowledgment Number: 17577 (relative ack number) Acknowledgment number (raw): 2196026813 1110 .... = Header Length: 56 bytes (14) Flags: 0x010 (ACK) 000. .... .... = Reserved: Not set ...0 .... .... = Accurate ECN: Not set .... 0... .... = Congestion Window Reduced: Not set .... .0.. .... = ECN-Echo: Not set .... ..0. .... = Urgent: Not set .... ...1 .... = Acknowledgment: Set .... .... 0... = Push: Not set .... .... .0.. = Reset: Not set .... .... ..0. = Syn: Not set .... .... ...0 = Fin: Not set [TCP Flags: ·······A····] Window: 258 [Calculated window size: 66048] [Window size scaling factor: 256] Checksum: 0xc406 [unverified] [Checksum Status: Unverified] Urgent Pointer: 0 Options: (36 bytes), No-Operation (NOP), No-Operation (NOP), SACK TCP Option - No-Operation (NOP) Kind: No-Operation (1) TCP Option - No-Operation (NOP) Kind: No-Operation (1) TCP Option - SACK 33801-35153 31097-32449 28393-29745 21633-24337 Kind: SACK (5) Length: 34 left edge = 33801 (relative) right edge = 35153 (relative) left edge = 31097 (relative) right edge = 32449 (relative) left edge = 28393 (relative) right edge = 29745 (relative) left edge = 21633 (relative) right edge = 24337 (relative) [TCP SACK Count: 4] [Timestamps] [Time since first frame in this TCP stream: 0.133543000 seconds] [Time since previous frame in this TCP stream: 0.000000000 seconds] [SEQ/ACK analysis] [iRTT: 0.060207000 seconds] [TCP Analysis Flags] [This is a TCP duplicate ack] [Duplicate ACK #: 5] [Duplicate to the ACK in frame: 2244] [Expert Info (Note/Sequence): Duplicate ACK (#5)] [Duplicate ACK (#5)] [Severity level: Note] [Group: Sequence]