This Python script will perform Path Trace between two clients in the Cisco DNA Center managed network.
Path Trace is a excellent tool to assist in troubleshooting connectivity between a source device and destination device.
Path Trace will collect the path information for specified source and destination IPv4 addresses, and optional, source and destination port numbers, and protocol number.
It will collect also information about in-path statistics for interfaces, interface configured ACLs and QoS policies, and device statistics
Cisco Products & Services:
- Cisco DNA Center
Tools & Frameworks:
- Python environment
Usage
This app will ask the user to input the following:
- Source IPv4 Address
- Source port number (or Enter for none)
- Destination IPv4 Address
- Destination port number (or Enter for none)
- Protocol number (or Enter for none)
It will validate if the provided IPv4 addresses, ports and protocol numbers are valid. It will initiate a new flow analysis, verify when the task is completed, retrieve the Path Trace details, parse the output and provide the hop-by-hop info.
$ python path_trace.py
Sample output:
Input the source IPv4 Address: 10.93.140.35
Input the source port number (or Enter for none): 5500
Input the destination IPv4 Address: 10.93.234.96
Input the destination port number (or Enter for none): 80
Input the protocol number (or Enter for none): 6
Initiated Path Trace with these parameters:
{
"destIP" : "10.93.234.96" ,
"sourceIP" : "10.93.140.35" ,
"periodicRefresh" : false ,
"inclusions" : [
"INTERFACE-STATS" ,
"DEVICE-STATS" ,
"ACL-TRACE" ,
"QOS-STATS"
] ,
"sourcePort" : 5500 ,
"destPort" : 80 ,
"protocol" : 6
}
Initiated Path Trace with the id:
a1bba53b-5d80-4aba-9372-573645077ee9
The complete path trace info is:
{
"request" : {
"sourceIP" : "10.93.140.35" ,
"sourcePort" : "5500" ,
"destIP" : "10.93.234.96" ,
"destPort" : "80" ,
"protocol" : "6" ,
"periodicRefresh" : false ,
"inclusions" : [
"INTERFACE-STATS" ,
"ACL-TRACE" ,
"DEVICE-STATS" ,
"QOS-STATS"
] ,
"id" : "a1bba53b-5d80-4aba-9372-573645077ee9" ,
"status" : "COMPLETED" ,
"createTime" : 1574879612290 ,
"lastUpdateTime" : 1574879612878 ,
"controlPath" : false
.....
.....
.....
}
Path Trace status: COMPLETED
Path Trace result:
[
"10.93.140.35" ,
"TenGigabitEthernet1/0/1" ,
"NYC-ACCESS" ,
"TenGigabitEthernet1/0/24" ,
"GigabitEthernet2" ,
"NYC-RO" ,
"GigabitEthernet3" ,
"GigabitEthernet3" ,
"SP" ,
"GigabitEthernet2" ,
"GigabitEthernet2" ,
"PDX-RO" ,
"GigabitEthernet1" ,
"GigabitEthernet1/0/13" ,
"PDX-M" ,
"GigabitEthernet1/0/20" ,
"FastEthernet0" ,
"PDX-DMZ" ,
"10.93.234.96"
]
End of Application "path_trace.py" Run
License
This project is licensed to you under the terms of the Cisco Sample Code License.