Identifying Connectivity Issues by Using Traceroute
You can use Contrail Service Orchestration (CSO) to perform a traceroute operation from a device (provider hub, tenant device, CPE device, enterprise hubs, or next-generation firewall device) to the remote host. Traceroute helps you view the path that a packet travels to reach the remote host. The result is useful in identifying the point of network failure in the path between the source device and remote host.
In Contrail Service Orchestration (CSO) Release 6.1, the following devices support traceroute:
NFX Series: NFX150, NFX250
SRX Series: SRX300, SRX320, SRX340, SRX345, SRX380, SRX1500, SRX4100, SRX4200, SRX4600
vSRX
To perform traceroute operation:
Field |
Description |
---|---|
Remote Host |
Enter the IPv4 address or hostname of the remote host. |
Maximum Hops |
Specify the maximum number of network devices that a packet can pass through to reach the remote host. Default: 30. Range: 1 through 255. If the number of hops to reach the remote host exceeds the set value, the traceroute packet is dropped. |
Advanced | |
Source Interface |
Select a source interface on the device from which you want to send the packets to the remote host. Click Clear All to remove the selected interface and select another interface. |
Hostname Resolution |
Click the toggle button to enable or disable (default) the display of hostname of the hops in the path to the remote host. |
Wait Time (seconds) |
Enter the time until which the device waits for a response from the remote host to a packet sent before considering timeout. Default: 10 seconds. Range: 0 through 86,399 seconds. |
Routing Instance |
Select a routing instance that the traceroute request packets can use to reach the remote host. The trace result displays the route information based on the configured routing instance type. To clear the selected routing instance, click Clear All and select another routing instance. |
Table 2 lists the parameters on the Traceroute Result page when the traceroute operation is successful.
Field |
Description |
---|---|
Hop |
Hostname or IPv4 address of the network devices that the packet passed through to reach the remote host. |
Time Taken by Packet 1 Time Taken by Packet 2 Time Taken by Packet 3 |
Duration (in microseconds) between the time from when the source device sends a packet, and the time it received a response from the hops and the remote host. |