[c-nsp] ASR 1002-F BGP table size

[Rick Ernst]

It looks like I need to look closer at the modular boxes. "ASR" was the
answer I kept seeing for the role, but the forwarding capacity of the
1002/4/6 (more specifically the ESP 5/10/20) was well beyond what I needed.

As a note, my network design does not have a capacity increase needed for
the role these boxes are in.  They are essentially the peering/link
end-point for GigE upstream.  By the time we grow to 10GE (rather than
additional GigE) links, we'll probably be on IPv7 and need new hardware
anyway. :)


Thanks,

On Tue, Mar 23, 2010 at 6:29 AM, Arie Vayner (avayner) <avayner at cisco.com>wrote:

> Rick,
>
> As the ASR1K is a hardware based platform the route scale limitation
> does not only come from the amount of RAM it has, but also from the
> capacity of the ESP (forwarding plane).
>
> If you are looking at sparing/redundancy, take a 2nd look at the
> ASR1006... Or maybe just the ASR1004. The advantage of the modular
> models is that as you need more forwarding plane capacity, you can
> upgrade the RP/ESP modules, and gain dramatic performance boost.
>
> You can find the details here:
> http://www.cisco.com/en/US/prod/collateral/routers/ps9343/data_sheet_c78
> -450070.html<http://www.cisco.com/en/US/prod/collateral/routers/ps9343/data_sheet_c78%0A-450070.html>
>
> (For the 1002F, we use ESP2.5, which has, in general, 50% of the
> capacity of a ESP5, hence the 500K IPv4 routes)
>
> Arie
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Rick Ernst
> Sent: Tuesday, March 23, 2010 14:49
> To: Mounir Mohamed Ali
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] ASR 1002-F BGP table size
>
> Ah. So I did remember the 500K IPv4 limit. :( Where did you find the
> docs
> with the 500K limit.
>
> Since it has 1GB RAM, the route limitation must be "somewhere else"?
>
> I'll need to see how the 1002 (non-F) works out. Maybe sparing RP/ESP
> will
> work out better than having a full spare chassis.  Any other platform to
> fill this role?
>
> Thanks,
>
>
> On Mon, Mar 22, 2010 at 6:39 PM, Mounir Mohamed Ali <
> mounirmohammad at gmail.com> wrote:
>
> > Hi Rick,
> >
> > Here is a quick comparison.
> >
> > The Cisco ASR 1002-F has RP1 with 1G RAM, ESP 2.5 with 1G RAM (2.5Gbps
> > bandwidth), SIP-10, 1SPA, and 4 GE ports  built in chassis, running
> IOS-XE
> > and has SW redundancy via VM, capcable to have 500K IPv4 and 125K Ipv6
> >
> > The Cisco ASR1002 has 1 RP1 integrated in the chassis comes with 4GB
> RAM by
> > default, 1 ESP slot for ESP5/10 to provide 5Gbps/10Gbps bandwidth, it
> also
> > has 4-built in GE-ports, 3 SPA ports, running IOS XE and has SW
> redundancy
> > via VM.
> >
> > On Mon, Mar 22, 2010 at 7:30 PM, Rick Ernst <cnsp at shreddedmail.com>
> wrote:
> >
> >> I'm having a hard (impossible) time locating performance and BGP
> specs for
> >> the ASR 1002-F.  Since it has a "not really an ESP" built-in, the
> >> ESP5/10/20
> >> specs aren't helping me a lot.  Other than it should have ~2.5Gbs
> >> forwarding
> >> (full-duplex?), I'can't find anything definitive on it.  References
> keep
> >> coming up with the ASR-1002 with the removable ESP.
> >>
> >> I'm looking at replacing our upstream routers (7206-VXR/G1) on GigE
> links
> >> with something that can better handle D/DoS attacks.  The original
> thought
> >> was to use a small 6500/Sup720.  Empirical testing shows that Netflow
> >> (even
> >> with the table size under control) really beats up on the SP CPU.
> The
> >> ASR-1002F seems like it should fit the bill, but I found something
> (that
> >> I've now lost) that mentioned 500K routes.
> >>
> >> I'm looking for a device that:
> >>  - is a "lightbulb"; relatively inexpensive, single-upstream
> >>  -  3 GigE ports
> >>  - 1 Gbs full-duplex (2Gbs total) hardware forwarding
> >>  - uRPF
> >>  - Netflow
> >>  - 1,000,000+ IPv4 BGP routes
> >>  - IPv6 support
> >>
> >> As an additional comment on the Sup720/Netflow, CPU on the SP hit
> ~30%
> >> with
> >> only a couple hundred Mbs and roughly 50% TCAM utilization.
> >>
> >> Is the ASR-1002F what I'm looking for? Can anybody direct me to 1002F
> (vs
> >> modular 1002) specs?
> >>
> >> Thanks,
> >> _______________________________________________
> >> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> >> https://puck.nether.net/mailman/listinfo/cisco-nsp
> >> archive at http://puck.nether.net/pipermail/cisco-nsp/
> >>
> >
> >
> >
> > --
> > Mounir Mohamed, CCIE No.19573(R&S, SP)
> > Senior Network Engineer, Core Team
> > NOOR Data Networks, SAE
> > http://mounirmohamed.wordpress.com
> > http://www.linkedin.com/in/mounirmohamed
> >
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