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Cisco Bug: CSCvs15821 - SNMP OID 1.3.6.1.4.1.9.9.156.1.1.2.1.7.1 returns STRING instead of HEX STRING.

Last Modified

Aug 24, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

10.5(2.10000.5) 11.5(1.10000.6) 12.0(1.10000.10) 12.5(1.10000.22) 12.5(1.11900.146)

Description (partial)

Symptom:
We could see for some CUCM IP's the 1.3.6.1.4.1.9.9.156.1.1.2.1.7.1 respond with STRING as below, ideally the response should be a HEX STRING 

[root@romulus108 ~]# snmpwalk -c public -v2c localhost 1.3.6.1.4.1.9.9.156.1.1.2.1.7.1
SNMPv2-SMI::enterprises.9.9.156.1.1.2.1.7.1 = STRING: "
M0l"
[root@romulus108 ~]#

Some OIDs returns incorrect values, as they return String, instead of Hex-String while running snmp walk.
The issue happens for only specific CUCM IP addresses.

Conditions:
When third party monitoring polls CUCM SNMP 1.3.6.1.4.1.9.9.156.1.1.2.1.7.1 to get the InetAddress.
Also it depends on CUCM IP addresses for which the code in nets-snmp side to display the output of snmp walk, prints STRING if the IP octet is a printable and space
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