Troubleshooting

Important

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Frequently Asked Questions

Q) I’ve configured my router to send flows to the replicator, but the replicator says it hasn’t received traffic from this device.

A) There may be a firewall or an access control list blocking traffic from reaching the Replicator. Verify that the Replicator is seeing traffic from the device by using the snoop <ip_of_network_device> command.

Q) I’ve configured my router to send flows to the replicator. How long will it take for the packets to be forwarded to the collectors?

A) When a new device starts sending UDP packets to the replicator, the packets will not get forwarded for up to two minutes.

Q) Is there a way to get a list of exporters that are not in any profiles but still sending packets to the replicator?

A) To get a list of the exporters that haven’t been assigned to any profiles, click on the Exporters tab and set the view to Exporters Not In a Profile. Alternatively, use the following interactive mode command:

REPLICATOR> exporters noprofile

+--------------------------------------------------------------------------+
| 10.1.73.1         Fri Nov 15 13:48:52 2019          1 packet(s)
| 10.1.29.60        Fri Nov 15 13:48:52 2019          2 packet(s)
| 10.202.0.103      Fri Nov 15 13:48:52 2019          5 packet(s)
| 10.200.10.1       Fri Nov 15 13:48:52 2019         32 packet(s)
| 172.20.124.41     Fri Nov 15 13:48:52 2019          1 packet(s)
+--------------------------------------------------------------------------+
Done in 0.035998 secs

Q) I want to send syslog notifications and IPFIX metrics generated by the replicator to multiple collectors. The setting seems to only support a single collector. How do I configure it for multiple collectors?

A) Configure the setting to send the notifications and/or IPFIX metrics back to the Replicator. Next, create a profile to send the data to one or more collectors. However, since one setting is for syslogs and the other one is for IPFIX, the configuration will require two different profiles. Assuming the Replicator’s IP is 10.1.4.66, below is an example of the profile settings.

+--------------------------------+-----------------------------------------+
| replicator_notifications       | IN PORT 514 -> OUT PORT 514
+--------------------------------+-----------------------------------------+

 Policies                   Exporters     ->    Collectors
 (include) 0.0.0.0/0        10.1.4.66           10.1.10.1
                                                10.1.4.19
                                                10.1.4.20
                                                10.1.4.222
                                                10.1.4.93
                                                10.1.4.94

+--------------------------------+-----------------------------------------+

+--------------------------------+-----------------------------------------+
| replicator_metrics             | IN PORT 2003 -> OUT PORT 2056
+--------------------------------+-----------------------------------------+

 Policies                   Exporters     ->    Collectors
 (include) 0.0.0.0/0        10.1.4.66           10.1.10.1
                                                10.1.4.19
                                                10.1.4.20
                                                10.1.4.222
                                                10.1.4.93
                                                10.1.4.94

+--------------------------------+-----------------------------------------+

Q) Can a profile have the same listening and receiving port?

A) Yes. The Replicator will perform additional checking to make sure a loop isn’t introduced by new collectors and exporters.

Q) I’m trying to add an exporter or collector and the Replicator will not add it because it will create a loop. What does it mean?

A) A loop is when flows are repeatedly exported from a device and sent back to itself. This makes a device both an exporter and a collector. If the profile is configured with the same listening and sending ports, the packets will be sent back and forth continuously.

Q) How do I change the root password on the Replicator?

A) Log into the Replicator as the root user and issue the passwd command.

Q) How do I change the admin password on the Replicator?

A) Log into the Replicator as the root user and use the interactive mode password webui command.

Q) How do I change the hostname and IP address of the Replicator?

A) There are two options to change the hostname and IP address. Log in as the root user and run the /home/replicator/conf/sethostname.sh command. Alternatively, log in as the replicator user and issue the interactive mode system change command.