Re: Re:[nsp] Cisco 6400....

From: Siva Valliappan (svalliap@cisco.com)
Date: Wed Feb 14 2001 - 01:43:02 EST


some comments inline.

regards
.siva

> > >box...rumor. The NSP2 claims 16'000 PPPoE sessions per card. Has
> anybody
> > >got this in production or can make claims either way.
>
> Cisco claims 16000 sessions, but the IOS release notes mention 4000
> sessions, so that's what I count on. So you may require multiple NRP2's.
> Cisco emphasizes that you will need 512MB more than 4000 users.

currently 4000 sessions are supported on the NRP2. we will be scaling the
session counts up as the SW work is done. the HW supports a much higher
session count. 4000 is the figure we feel comfortable with with the
current release of code (12.1(4)DC1)

>
> > Dunno about PPPoE, but doing RFC-bridging it runs very badly, with 1000
> maximum DSL users per NRP.
>
> Using IRB or RBE? RBE is supposedly a lot more efficient.

please move to RBE. IRB does not scale as well as RBE.

>
> >Test by the same telco with PPPoA yelded the same results. The NSP is just
> an ATM switch, it will
> >probably scale easily, the issue is the NRPs where sessions are terminated.
> May be a new NRP based >on the processor used in NPE-400 is what they are
> talking about.
> >
> > Let's hope Cisco starts moving DSL and dial-up aggregation to 10K, today
> targeted only at leased-line >aggregation. In the meantime, 6400 is another
> product that I wouldn't put any money on; Redback, >Cosine and Shasta all
> have better solutions to choose among them based on price/features balance.
> >Redback is getting most of the new contracts I've known about.

we also support xDSL aggregation on a variety of other cisco platforms
(from the 2600 up).

depending on your needs, a 7200 may also be a suitable alternative.
you have a variety of processor blades for the 7200 with new blades
coming out routinely. currently shipping. we support 4000 sessions on
the NPE-300 and 8000 sessions on the NPE-400. however this tends to be
for such applications as RBE, PPPoE, PPPoA, etc. IRB performance
is going to be lower.

> We have to make the choice between the 6400, Redback (SMS-1800 or 10000) and
> possibly Nortel Shasta. The Redback platforms are very expensive, for
> instance, BGP support in the Redback will set you back some $25.000! Cisco
> has good papers if you look at price/performance and software features (I
> consider MPLS-VPN's to be quite an important feature, which, although
> claimed by Cisco, is not yet supported if you look at the release notes more
> carefully). More scary: the GigE interface of the NRP-2 is not even
> supported yet!
>

it will be supported shortly.

> Does anyone know if the NRP-2 GigE interface support trunking, either 802.1q
> or ISL?
>
> --
> Rodney van den Oever / KeyID 0x0A6CCE53
> 'OIR - On Insertion Reload'
>



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