[rbak-nsp] SNMP Session list - SE400

[Brent]

Sean - That worked great, thank you!  I can write up a simple php function
to convert everything. Any idea what the rest of the OID might reveal?

 

SNMPv2-SMI::enterprises.2352.2.27.1.1.1.1.3.4.116.101.115.116.25.48.50.48.50
.48.48.51.70.54.56.48.48.51.57.50.48.45.52.66.69.52.50.56.66.56 = STRING:
"3/3:1 vpi-vci 18 37 pppoe 37"

 

Username: test

 

From: Sean Maguire [mailto:smaguire at talktalkplc.com] 
Sent: Friday, May 07, 2010 2:51 AM
To: Brent; redback-nsp at puck.nether.net
Subject: RE: [rbak-nsp] SNMP Session list - SE400

 

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.2352.2.27.1.1.1.1.3.16.102.114.101.100.64.101.120.97
.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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