[SNMP4J] using aes192/aes256 privacy protocols against Cisco devices

[Matthieu Casanova]

Hi, someone stops me if I'm wrong but I think that the RFC3826 (AES
for USM) speaks only of AES 128, so I suppose that AES192 and 256 are
bonus we have in snmp4j.

Matthieu

2007/9/18, Elad Sarver <elad.xx at gmail.com>:
> Hi,
>
> When I use the snmp4j.exe tool (latest version) to query a Cisco 7200 series
> device using AES128 encryption, it works.
> When I try to use the same for AES192 or AES256, the device doesn't respond.
> not even with a Report PDU, which is always sent in other cases.
> Using Ethereal, I see that an encrypted AES192 PDU was sent to the
> device and nothing came back.
>
> I have the security policy files installed. Before they were installed, a
> different error had occured. So it probably isn't the reason.
> The device is configured correctly, and traps/informs are being sent from it
> correctly with AES192.
>
> 1. What could be the problem?
> 2. Was the Snmp4J tool tested against Cisco devices using these privacy
> protocols?
>
> thanks,
> Elad.
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