Cisco Nexus 9000 Series Troubleshooting Manual page 117

Troubleshooting Tools and Methodology
• debug packet-analysis snmp [mgmt0 | inband] duration seconds [output-file] [keep-pcap]—Captures
packets for a specified number of seconds using Tshark, saves them in a temporary .pcap file, and then
analyzes them based on this .pcap file.
The results are saved in the output file or printed to the console, if the output file is not specified. The
temporary .pcap file will be deleted by default, unless you use the keep-pcap option. Packet capture
can be performed on the management interface (mgmt0), which is the default, or the inband interface.
Examples:
switch# debug packet-analysis snmp duration 100
switch# debug packet-analysis snmp duration 100 bootflash:snmp_stats.log
switch# debug packet-analysis snmp duration 100 bootflash:snmp_stats.log keep-pcap
switch# debug packet-analysis snmp inband duration 100
switch# debug packet-analysis snmp inband duration 100 bootflash:snmp_stats.log
switch# debug packet-analysis snmp inband duration 100 bootflash:snmp_stats.log keep-pcap
• debug packet-analysis snmp input-pcap-file [output-file]—Analyzes the captured packets on an existing
.pcap file.
Examples:
switch# debug packet-analysis snmp bootflash:snmp.pcap
switch# debug packet-analysis snmp bootflash:snmp.pcap bootflash:snmp_stats.log
The following example shows a sample statistics report for the debug packet-analysis snmp [mgmt0 |
inband] duration command:
switch# debug packet-analysis snmp duration 10
Capturing on eth0
36
wireshark-cisco-mtc-dissector: ethertype=0xde09, devicetype=0x0
wireshark-broadcom-rcpu-dissector: ethertype=0xde08, devicetype=0x0
Started analyzing. It may take several minutes, please wait!
Statistics Report
-----------------------------------------
SNMP Packet Capture Duration: 0 seconds
Total Hosts: 1
Total Requests: 18
Total Responses: 18
Total GET: 0
Total GETNEXT: 0
Total WALK: 1 (NEXT: 18)
Total GETBULK: 0
Total BULKWALK: 0 (BULK: 0)
Total SET: 0
Total TRAP: 0
Total INFORM: 0
Hosts
------------------------------------------------------------------------------------------
10.22.27.244
Sessions
--------
1
MIB Objects GET GETNEXT WALK(NEXT) GETBULK(Non_rep/Max_rep) BULKWALK(BULK, Non_rep/Max_rep)
---------------------------------------------------------------------------------------------
GET GETNEXT WALK(NEXT) GETBULK
0 0 1(18)
Cisco Nexus 9000 Series NX-OS Troubleshooting Guide, Release 7.x
Using the PCAP SNMP Parser
BULKWALK(BULK) SET
0 0(0) 0
TRAP INFORM RESPONSE
0 0 18
105