Thanks for the info.

Best Regards,
Liu Yu
Tel: +86 10 64798176 (2736 8176)
Email : [email protected]

-----Original Message-----
From: Frank Fock [mailto:[email protected]] 
Sent: 2019年1月7日 16:19
To: Liu, Yu M. (NSB - CN/Beijing)
Cc: [email protected]
Subject: Re: [SNMP4J] help: multiple context

Hi Yu,
That is intended behavior. The SNMP4J-Agent default context (empty context 
name) is visible in all SNMPv3 contexts although the explicit context takes 
precedence if there are registrations for the same OID in requested context and 
the default context. 

If you want strict separation, you need to put the objects in a second non-null 
context.

The default context is a kind of fallback context. 

Hope this helps.

Best regards
Frank

> Am 07.01.2019 um 06:39 schrieb Liu, Yu M. (NSB - CN/Beijing) 
> <[email protected]>:
> 
> Hi experts,
> 
> We are using Snmp4J to develop our Subagent. Recently, we need to support 
> multiple context function in our subagent and we follow below reference to 
> achieve that.
> https://doc.snmp.app/pages/viewpage.action?pageId=14155780
> 
> But in our testing, we observe that when we configure context "contexta" and 
> ""(empty) together, then snmpwalk context "contexta" MIB table, it will get 
> some OIDs from context ""(empty) MIB table.
> Below is an example, the id "60" and "61" belong to context "contexta", id 
> "64" and "65" belong to context ""(empty).
> [root@ ~]# snmpwalk -n contexta -v 3 -u test1 -a MD5 -A 12345678 -x 
> DES -X 12345678 -l authPriv 10.76.84.132:31101 
> 1.3.6.1.4.1.94.7.1.4.2.1
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.1.60 = INTEGER: 60
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.1.61 = INTEGER: 61
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.2.60 = STRING: 
> "system-system-test/host-host/container-container/service-service/process-process"
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.2.61 = STRING: 
> "system-system-test/host-host/container-container/service-service/process-process"
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.3.60 = Hex-STRING: 07 E2 02 0A 01 
> 24 21 00 2D 00 00
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.3.61 = Hex-STRING: 07 E2 02 0A 01 
> 24 21 00 2D 00 00
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.4.60 = INTEGER: 600033
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.4.61 = INTEGER: 600034 ...
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.20.64 = ""
> SNMPv2-SMI::enterprises.94.7.1.4.2.1.20.65 = ""
> 
> 
> Would you please help to check if it's normal. Thanks!
> 
> 
> Best Regards,
> Liu Yu
> Tel: +86 10 64798176 (2736 8176)
> Email : [email protected]<mailto:[email protected]>
> 
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