[156700] in North American Network Operators' Group
Re: Cisco 7206 IOS for PPPoE Termination
daemon@ATHENA.MIT.EDU (Mark Gauvin)
Sun Sep 23 16:50:28 2012
X-Barracuda-Envelope-From: MGauvin@dryden.ca
From: Mark Gauvin <MGauvin@dryden.ca>
To: Shahab Vahabzadeh <sh.vahabzadeh@gmail.com>
Date: Sun, 23 Sep 2012 15:49:38 -0500
In-Reply-To: <CAGqGmqa=VsOta=T8igr+cYhO4P4ovTROvduNA1mMZ4ADAMJn0g@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
You are joking I hope=20
Sent from my iPhone
On 2012-09-23, at 3:38 PM, "Shahab Vahabzadeh" <sh.vahabzadeh@gmail.com> wr=
ote:
> 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
>=20
> On Sun, Sep 23, 2012 at 11:17 PM, PC <paul4004@gmail.com> wrote:
>=20
>> For this application, you may wish to consider the service provider imag=
es.
>>=20
>> The latest 15.x(S) image works, as it is the derivative of what was
>> formerly the service-provider oriented 12.2(SRx) images.
>>=20
>> However, it's unlikely to drop steady state CPU, but it may contain some
>> optimizations for concurrent PPP (re)negotiations on the G2 platform dur=
ing
>> session recovery.
>>=20
>> PPPoE will generally handle more users on ethernet as it is easier to pu=
sh
>> packets on when not dealing with the ATM encapsulations, but to what ext=
ent
>> this holds true on the 7200, I can't tell you for sure.
>>=20
>> I'd also read the broadband aggregation guide under the IOS documentatio=
n
>> 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 ra=
tes
>> during recovery.
>>=20
>> I wish you luck (and consider getting another and/or bigger router to
>> split the load).
>>=20
>> On Sun, Sep 23, 2012 at 1:23 PM, Shahab Vahabzadeh <
>> sh.vahabzadeh@gmail.com> wrote:
>>=20
>>> Which software you used before for them?
>>>=20
>>> On Sun, Sep 23, 2012 at 10:43 PM, Rinse Kloek <rinse.kloek@isp.solcon.n=
l
>>>> wrote:
>>>=20
>>>> 6000 PPP users on a NPE-G2 is way too much imho. Currently we do no mo=
re
>>>> 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.
>>>>=20
>>>> regards,
>>>> Rinse Kloek
>>>> Op 23-9-2012 20:51, Shahab Vahabzadeh schreef:
>>>>=20
>>>>> 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.
>>>=20
>>>>>=20
>>>>> 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 abnorma=
l
>>> 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 720=
6.
>>>>> Thanks
>>>>>=20
>>>>>=20
>>>=20
>>>=20
>>> --
>>> Regards,
>>> Shahab Vahabzadeh, Network Engineer and System Administrator
>>>=20
>>> Cell Phone: +1 (415) 871 0742
>>> PGP Key Fingerprint =3D 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 B=
F90
>>>=20
>>=20
>>=20
>=20
>=20
> --=20
> Regards,
> Shahab Vahabzadeh, Network Engineer and System Administrator
>=20
> Cell Phone: +1 (415) 871 0742
> PGP Key Fingerprint =3D 8E34 B335 D702 0CA7 5A81 C2EE 76A2 46C2 5367 BF9=
0
