How to Configure Your Appliance to Send SNMP Trap Notifications

SUMMARY

Steps for configuring SNMP trap notifications.

ISSUE

Steps to configure a Recovery Series or Unitrends Backup appliance to send SNMP traps as notifications to specified trap receivers (hosts).

RESOLUTION

Set up a specific SNMP trap receiver:

  1. Connect to the user interface of the Unitrends appliance and log in
  2. Select Configure on the left
  3. Be sure the "Appliances" tab is selected, then select "Edit"
  4. Select the "Advanced" tab
  5. Select "SNMP" at the bottom of the "Edit Appliance" dialog
  6. The "Edit SNMP Configuration (Advanced)" dialog will be displayed:
    Edit SNMP Configuration
  7. Select "Add":
    Add SNMP Destination
  8. In the Destination field, enter the hostname, fully-qualified domain name (FQDN), or IP address of the SNMP trap receiver host.
  9. In the Community field, enter the SNMP community string for the above SNMP trap receiver.  Refer to your network administrator for the proper community string, as each organization has its own schema for SNMP notifications.
  10. Check the box next to "Enabled" to turn on notifications to the above SNMP trap receiver.
  11. Press "Save"

 

Test SNMP

On the "Edit SNMP Configuration" dialog, pressing "Test" will cause the Unitrends appliance to send an SNMP notification to all enabled destinations.

Note: SNMP traps to notifications.unitrends.com will have a return IP/destination of 140-130-228-89.static.cloud-ips.com.  This is expected behavior, as Unitrends utilized a third-party to host SNMP trap receiver services.  Example below:

User-added image

A packet capture of a sample SNMP trap appears as follows:

0000   b8 70 f4 1c 6f 34 00 1e 4f 08 27 f8 08 00 45 00  .p..o4..O.'...E.
0010   01 3a 00 00 40 00 3f 11 db 35 c0 a8 65 22 c0 a8  .:[email protected]?..5..e..
0020   79 0a 92 b6 00 a2 01 26 6f 09 30 82 01 1a 02 01  y......&o.0.....
0030   01 04 06 70 75 62 6c 69 63 a7 82 01 0b 02 04 0c  ...public.......
0040   2d 2d 9c 02 01 00 02 01 00 30 81 fc 30 10 06 08  --.......0..0...
0050   2b 06 01 02 01 01 03 00 43 04 01 3a d6 0f 30 1b  +.......C..:..0.
0060   06 0a 2b 06 01 06 03 01 01 04 01 00 06 0d 2b 06  ..+...........+.
0070   01 04 01 81 aa 69 01 02 64 00 63 30 18 06 0b 2b  .....i..d.c0...+
0080   06 01 04 01 81 aa 69 01 01 01 04 09 54 65 73 74  ......i.....Test
0090   20 54 72 61 70 30 13 06 0b 2b 06 01 04 01 81 aa   Trap0...+......
00a0   69 01 01 02 04 04 4e 6f 6e 65 30 38 06 0b 2b 06  i.....None08..+.
00b0   01 04 01 81 aa 69 01 01 03 04 29 56 65 72 69 66  .....i....)Verif
00c0   79 20 74 68 61 74 20 53 4e 4d 50 20 63 6f 6e 66  y that SNMP conf
00d0   69 67 75 72 61 74 69 6f 6e 20 69 73 20 77 6f 72  iguration is wor
00e0   6b 69 6e 67 30 10 06 0b 2b 06 01 04 01 81 aa 69  king0...+......i
00f0   01 01 04 02 01 03 30 10 06 0b 2b 06 01 04 01 81  ......0...+.....
0100   aa 69 01 01 05 02 01 00 30 1d 06 0b 2b 06 01 04  .i......0...+...
0110   01 81 aa 69 01 01 06 04 0e 37 32 32 2d 31 30 30  ...i.....722-100
0120   2d 30 30 30 30 35 20 30 1f 06 0b 2b 06 01 04 01  -00005 0...+....
0130   81 aa 69 01 01 07 04 10 52 65 63 6f 76 65 72 79  ..i.....Recovery
0140   2d 37 32 32 20 44 50 55                          -722 DPU 
 

Troubleshooting

If SNMP traps are not being received by the intended host, please check the following:

  • Confirm that the IP address of the destination is correct and reachable from the appliance.
  • Confirm that the hostname or FQDN are correct.
  • If the hostname or FQDN is correct, check the hosts file and DNS settings on the backup appliance (Configure > Networking).
  • If DNS settings are correct, confirm your DNS server is properly resolving the hostname of your destination host.
  • Check any firewall settings between the backup appliance and your destination host including local firewalls (i.e. Windows Firewall for Windows hosts).
  • Make sure the proper community name was set.
  • Check the SNMP notification software on your destination host to make sure it is configured to accept SNMP traps from your backup appliance and that it is configured for the proper community name.

NOTES

In the legacy interface, SNMP traps are configured by going to Settings -- Clients, Networking, and Notifications -- SNMP.

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