nanog mailing list archives

Re: Cisco 7206 IOS for PPPoE Termination


From: Shahab Vahabzadeh <sh.vahabzadeh () gmail com>
Date: Mon, 24 Sep 2012 00:20:53 +0330

why joking Mark?

On Mon, Sep 24, 2012 at 12:19 AM, Mark Gauvin <MGauvin () dryden ca> wrote:

You are joking I hope

Sent from my iPhone

On 2012-09-23, at 3:38 PM, "Shahab Vahabzadeh" <sh.vahabzadeh () gmail com>
wrote:

Dear Paul,
Thanks for you reply, May I have those optimization knobs for
virtual-template and throttles?
Maybe looking into your configurations help me in this field.
I will look for the service  provider image too.
Thanks

On Sun, Sep 23, 2012 at 11:17 PM, PC <paul4004 () gmail com> wrote:

For this application, you may wish to consider the service provider
images.

The latest 15.x(S) image works, as it is the derivative of what was
formerly the service-provider oriented 12.2(SRx) images.

However, it's unlikely to drop steady state CPU, but it may contain some
optimizations for concurrent PPP (re)negotiations on the G2 platform
during
session recovery.

PPPoE will generally handle more users on ethernet as it is easier to
push
packets on when not dealing with the ATM encapsulations, but to what
extent
this holds true on the 7200, I can't tell you for sure.

I'd also read the broadband aggregation guide under the IOS
documentation
on cisco.com, and tune all the knobs that may help you, there are some
pointers on what items on virtual-templates are punitive in performance,
other optional items such as disabling SNMP counters on virtual access
interfaces to reduce cpu usage, and other items that may help little by
little.  There are also various knobs to throttle PPPoE renegotiation
rates
during recovery.

I wish you luck (and consider getting another and/or bigger router to
split the load).

On Sun, Sep 23, 2012 at 1:23 PM, Shahab Vahabzadeh <
sh.vahabzadeh () gmail com> wrote:

Which software you used before for them?

On Sun, Sep 23, 2012 at 10:43 PM, Rinse Kloek <
rinse.kloek () isp solcon nl
wrote:

6000 PPP users on a NPE-G2 is way too much imho. Currently we do no
more
than 3000 users on a NPE-G2 with PPPoA. (Max cpu 50%).
5 years ago, we did about 5000 users on a NPE-G2, but as traffic
ratio's
grow each year the maximum users a NPE-G2 can handle will drop each
year.
Don't forget an NPE-G2 is a software based plaform, so traffic
forwarding
is done in software CPU.

regards,
Rinse Kloek
Op 23-9-2012 20:51, Shahab Vahabzadeh schreef:

Hello everybody,
I am using C7206 VXR NPE-G2 routers as BRAS in my network and the
current
IOS is *c7200p-adventerprisek9-mz.**124-24.T.bin* on them.


Also their memory upgraded to 2GB instead of 1GB.
And I have near 6500 online user on each of my BRAS and there is no
speciefic feature except aaa with radius and ordinary features.
There router is also terminating dot1q too because my PSTN centers
traffic
comes through dot1q vlans to BRAS es.
I think I have some problem with current IOS, My CPU Usage is
abnormal
and
Its near %70 or %80.
And when I have a network problem and some of PSTN centers goes down
CPU
go
to %99 and it gets problem to recovery.
Do you know any good IOS for me as a service provider to use?
I heard that some service providers have near 8000 online user on
7206.
Thanks




--
Regards,
Shahab Vahabzadeh, Network Engineer and System Administrator

Cell Phone: +1 (415) 871 0742
PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367
BF90





--
Regards,
Shahab Vahabzadeh, Network Engineer and System Administrator

Cell Phone: +1 (415) 871 0742
PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367 BF90




-- 
Regards,
Shahab Vahabzadeh, Network Engineer and System Administrator

Cell Phone: +1 (415) 871 0742
PGP Key Fingerprint = 8E34 B335 D702 0CA7 5A81  C2EE 76A2 46C2 5367 BF90


Current thread: