[rbak-nsp] SNMP Session list - SE400

[Sean Maguire]

Hi Brent,

 

>From memory, the PPP username, along with the length, is encoded as part
of the OID when you walk the SUBSCRIBER-ACTIVE MIB. For example, if you
walk the OID tree that you mentioned and you have a user
"fred at example.com", the OID returned would be:

 

SNMPv2-SMI::enterprises.2352.2.27.1.1.1.1.3.16.102.114.101.100.64.101.12
0.97.109.112.108.101.46.99.111.109

 

The 16 is the length of the username, followed by the decimal ASCII code
of all the characters in the username. It's pretty trivial to write a
Perl script to convert usernames and OIDs into each other.

 

Regarding the MAC addresses for each user, you might be able to find
them somewhere in ifTable, which has an entry for all subscribers
connected to the device since these are regarded as circuits. I would
have guessed that, if the value was present, it would have been returned
in ifPhysAddress (1.3.6.1.2.1.2.2.1.6) but a quick walk on one of our
devices seems to show that this value is blank in most cases, so you
might be out of luck.

 

Regards,

 

Sean

 

________________________________

From: redback-nsp-bounces at puck.nether.net
[mailto:redback-nsp-bounces at puck.nether.net] On Behalf Of Brent
Sent: 06 May 2010 16:28
To: redback-nsp at puck.nether.net
Subject: [rbak-nsp] SNMP Session list - SE400

 

Does anyone know if it's possible to get useful session information
(like ppp username, or mac address) for all active sessions via snmp?  I
can get this: 4/3 vlan-id 2020 pppoe 17168 using this OID:
SNMPv2-SMI::enterprises.2352.2.27.1.1.1.1.3.3.... but I can't really
extrapolate anything externally from that.

 

Thanks,

 

Brent

 

 


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