Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




1 post

Wannabe Geek


Topic # 23450 30-Jun-2008 06:16
Send private message

Hi,

I have a doubt about communication between DSLAM and BRAS.

Maybe this question is easier and I don't know the answer.

I have a problem and I need to know which IP address some user got in some day and I need log this information, for legal issues:

DSLAM port
day
hour
IP


My question is:

As my PPPoE authentication are the same to all users, example:
user: internet@internet.net
pass: internet


How I could to log IP/port DSLAM delivery to user.

Which device is easier to log, DSLAM or BRAS.

The devices which are used are:

- Alcatel DSLAM, ethernet and ATM (all models, new and old)
- BRAS (Cisco and Juniper)


Thanks,

--
Shadow

Create new topic
3091 posts

Uber Geek
+1 received by user: 509

Trusted

  Reply # 148378 16-Jul-2008 00:32
Send private message

I dont think the dslam keeps a log of the ip address as this is more for the ppp connection. i would guess that the best you could get is who was given the ip address from your dhcp server or your radius server. My reasoning for this is the pppoa connection flows through the dslam much like a vpn connection?

Unfortunatly because everyone uses the same username and password this makes it all more harder to track users.

Now i also wonder if this is an exam question. If you were administering equipment such as DSLAMS in your profession, you would already know how to achieve the logging you need or have set up a logging system when you set up your network for troubleshooting reasons.


Maybe some other GZ user who knows more than me could work out a way?




Ray Taylor
Taylor Broadband (rural hawkes bay)
www.ruralkiwi.com

There is no place like localhost
For my general guide to extending your wireless network Click Here




637 posts

Ultimate Geek
+1 received by user: 2

Trusted

  Reply # 148384 16-Jul-2008 03:32
Send private message

You won't find the logs useful on the DSLAM - there is one exclusion to this, which is where the DSLAM is also acting as an IP router/PPP terminator, but given you mentioned ATM DSLAMs this is unlikely.

You will want to check logs on your RADIUS server, and possibly your BRAS.  What you need to know is the IP address and the time/date it was assigned, then your RADIUS server show you the NAS-Identifier and NAS-Port-ID attributes that were in the RADIUS request that had the IP returned.

The NAS-Port-ID will correspond to the logical interface on the BRAS, e.g. atm0/0.12341234 or GigE0/0.12341234.  The logical interface ID will then correspond to the ATM VPI and VCI of the DSLAM and subscriber; or the S-VLAN/C-VLAN of the DSLAM and subscriber.

NB: This gets MUCH trickier if you're operating in an N:1 architecture opposed to 1:1, and you may be stuck for determining which subscriber it was, unless you were inserting the line-id information in the PPPoE PADI or using DHCP Option-82.

I'd suggest that this doesn't have much to do with Telecom or Xtra.

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Propel launch Disney Star Wars Laser Battle Drones
Posted 19-Nov-2017 21:26


UFB killer app: Speed
Posted 17-Nov-2017 17:01


The case for RSS — MacSparky
Posted 13-Nov-2017 14:35


WordPress and Indieweb: Take control of your online presence — 6:30 GridAKL Nov 30
Posted 11-Nov-2017 13:43


Chorus reveals technology upgrade for schools, students
Posted 10-Nov-2017 10:28


Vodafone says Internet of Things (IoT) crucial for digital transformation
Posted 10-Nov-2017 10:06


Police and Facebook launch AMBER Alerts system in NZ
Posted 9-Nov-2017 10:49


Amazon debuts Fire TV Stick Basic Edition in over 100 new countries
Posted 8-Nov-2017 05:34


Vodafone VoIP transition to start this month
Posted 7-Nov-2017 12:33


Spark enhances IoT network capability
Posted 7-Nov-2017 11:33


Vocus NZ sale and broadband competition
Posted 6-Nov-2017 14:36


Hawaiki reaches key milestone in landmark deep-sea fibre project
Posted 4-Nov-2017 13:53


Countdown launches new proximity online shopping app
Posted 4-Nov-2017 13:50


Nokia 3310 to be available through Spark New Zealand
Posted 4-Nov-2017 13:31


Nest launches in New Zealand
Posted 4-Nov-2017 12:31



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.