Avamar: Administrator UI Reports an incorrect Data Domain status due to other systems polling DD for SNMP

Summary: Avamar UI reports Data Domain incorrectly due to too many SNMP requests to the DD from Avamar and other systems.

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Symptoms

The management console server (MCS) logs intermittently report that it was unable to get Simple Network Management Protocol (SNMP) data:

grep -ih snmp /usr/local/avamar/var/mc/server_log/mcserver.log* | grep -B1 -i "warn\|err"
08/24-10:42:43.00137 com.avamar.mc.datadomain.DdrSnmpGetter.getTableData
:WARNING: Unable to get SNMP table data. Host=DD.company.com, OID=[1.3.6.1.4.1.19746.1.5.1.1.1], PDU type=-96.
08/24-10:42:43.00137 com.avamar.mc.datadomain.DdrSnmpTableData.
WARNING: Failed to retrieve SNMP table data. Host=DD.company.com, OID=1.3.6.1.4.1.19746.1.5.1.1.1.*, elapsed time=100106ms
 

Running tcpdump on DD (in bash mode) shows that multiple systems are requesting SNMP information:

tcpdump -i any portrange 161-163
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on any, link-type LINUX_SLL (Linux cooked), capture size 96 bytes
11:43:05.656618 IP localhost.localdomain.58301 > localhost.localdomain.snmp: S 1223504215:1223504215(0) win 32792 
11:43:05.656630 IP localhost.localdomain.snmp > localhost.localdomain.58301: R 0:0(0) ack 1223504216 win 0
11:43:07.733679 IP DPA.company.com.61910 > DD.company.com.snmp:  GetRequest(32)  E:19746.1.8.1.1.1.1
11:43:07.733679 IP DPA.company.com.61910 > DD.company.com.snmp:  GetRequest(32)  E:19746.1.8.1.1.1.1
11:43:08.239923 IP Avamar.company.com.41365 > DD.company.com.snmp:  GetRequest(33)  E:19746.1.13.1.3.0
11:43:08.239923 IP Avamar.company.com.41365 > DD.company.com.snmp:  GetRequest(33)  E:19746.1.13.1.3.0
11:43:09.240999 IP Avamar.company.com.41365 > DD.company.com.snmp:  GetRequest(33)  E:19746.1.13.1.3.0
11:43:09.240999 IP Avamar.company.com.41365 > DD.company.com.snmp:  GetRequest(33)  E:19746.1.13.1.3.0
11:43:10.242055 IP Avamar.company.com.41365 > DD.company.com.snmp:  GetRequest(33)  E:19746.1.13.1.3.0
11:43:10.242055 IP Avamar.company.com.41365 > DD.company.com.snmp:  GetRequest(33)  E:19746.1.13.1.3.0
11:43:17.733926 IP DPA.company.com.61910 > DD.company.com.snmp:  GetRequest(32)  E:19746.1.8.1.1.1.1
11:43:17.733926 IP DPA.company.com.61910 > DD.company.com.snmp:  GetRequest(32)  E:19746.1.8.1.1.1.1

See Avamar: How To Access a Data Domain System for information about how to log in to DD and access bash mode.

Cause

Overlapping SNMP requests from multiple systems are causing SNMP time outs for Avamar and potentially other systems requesting SNMP information.

Resolution

1. Review which systems are polling SNMP information from the Data Domain for potential parameter changes.

2. If DPA is polling Data Domain, engage the DPA support team referencing Data Domain SNMP status request consistently fails with timeout errors.

3. If the issue is still not resolved, see Avamar: Troubleshooting Data Domain Integration Errors in the Avamar Administrator UI (Resolution Path).

Affected Products

Avamar

Products

Avamar
Article Properties
Article Number: 000165925
Article Type: Solution
Last Modified: 20 May 2025
Version:  4
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