Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual page 731

Troubleshooting
This example shows detailed captured data for one HSRP packet:
switch(config)# ethanalyzer local interface mgmt capture-filter "tcp port 23"
limit-captured-frames 1
Capturing on eth0
Frame 1 (60 bytes on wire, 60 bytes captured)
Arrival Time: Jan 25, 2005 08:49:49.250719000
[Time delta from previous captured frame: 1106642989.250719000 seconds]
[Time delta from previous displayed frame: 1106642989.250719000 seconds]
[Time since reference or first frame: 1106642989.250719000 seconds]
Frame Number: 1
Frame Length: 60 bytes
Capture Length: 60 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:tcp]
Ethernet II, Src: 00:1a:a2:d2:d7:00 (00:1a:a2:d2:d7:00), Dst: 00:0d:ec:6d:81:00
(00:0d:ec:6d:81:00)
Destination: 00:0d:ec:6d:81:00 (00:0d:ec:6d:81:00)
Source: 00:1a:a2:d2:d7:00 (00:1a:a2:d2:d7:00)
Type: IP (0x0800)
Trailer: 000000000000
Internet Protocol, Src: 10.200.0.103 (10.200.0.103), Dst: 10.193.24.42 (10.193.24.42)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
Total Length: 40
Identification: 0xa651 (42577)
Flags: 0x04 (Don't Fragment)
Fragment offset: 0
Time to live: 127
Protocol: TCP (0x06)
Header checksum: 0x2765 [correct]
Source: 10.200.0.103 (10.200.0.103)
Destination: 10.193.24.42 (10.193.24.42)
Transmission Control Protocol, Src Port: 1288 (1288), Dst Port: telnet (23), Seq: 0, Ack:
0, Len: 0
Source port: 1288 (1288)
Destination port: telnet (23)
Sequence number: 0
Acknowledgement number: 0
Header length: 20 bytes
Flags: 0x10 (ACK)
Window size: 64334
Checksum: 0x934f [correct]
1 packets captured
For more information on Wireshark, see the following URL: http://www.wireshark.org/docs/.
OL-16597-01
Address: 00:0d:ec:6d:81:00 (00:0d:ec:6d:81:00)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Address: 00:1a:a2:d2:d7:00 (00:1a:a2:d2:d7:00)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
0... = Reserved bit: Not set
.1.. = Don't fragment: Set
..0. = More fragments: Not set
[Good: True]
[Bad : False]
(relative sequence number)
0... .... = Congestion Window Reduced (CWR): 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
[Good Checksum: True]
[Bad Checksum: False]
(relative ack number)
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Using Ethanalyzer
685