[c-nsp] Nexus 7000

[mack]

Ok that math doesn't make sense.
60/48=1 1/3 not 2.
Even at that 32 ports with 80gbps forwarding is still an oversubscription of 4:1
Of course real world will probably allow forwarding of more than 80gbps at 60mpps.

The performance listed jives pretty well with the 230gbps / slot (figure 500 byte packets).
Meaning a 1.4:1 oversubscription on the 32 x 10GE card (assuming single direction traffic).

--
LR Mack McBride
Network Administrator
Alpha Red, Inc.


> -----Original Message-----
> From: Tim Stevenson [mailto:tstevens at cisco.com]
> Sent: Tuesday, January 29, 2008 2:52 AM
> To: mack; Tom Storey; Pete Templin
> Cc: cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] Nexus 7000
>
> At 02:38 AM 1/29/2008 -0600, mack observed:
> >The 60mpps (30mpps) forwarding rate per slot is pretty anemic
> >considering a 6704-10GE w/ DFC will do 48mpps per slot.
>
> True. But, after the pps is removed as the bottleneck, this system
> will do 8 10G ports at line rate per slot vs ~4.
>
> Tim
>
> >This is obviously for heavy duty back end applications and not
> >satisfactory for front end delivery to the internet.
> >The 6500/7600 is still the obvious sweet spot for data centers
> >specializing in content delivery to the internet.
> >
> >The CRS-1 is really cool but cost way too much.
> >The 8 slot system even has a lower total bandwidth capability than the
> 7609.
> >It doesn't shine until you go to the 16 slot system.
> >
> >--
> >LR Mack McBride
> >Network Administrator
> >Alpha Red, Inc.
> >
> > > -----Original Message-----
> > > From: Tim Stevenson [mailto:tstevens at cisco.com]
> > > Sent: Tuesday, January 29, 2008 1:51 AM
> > > To: Tom Storey; Pete Templin
> > > Cc: mack; cisco-nsp at puck.nether.net
> > > Subject: Re: [c-nsp] Nexus 7000
> > >
> >[snip]
> > >
> > > 60Mpps IPv4 unicast per slot, 30Mpps IPv6 unicast per slot. Routing
> > > protocol highlights: OSPFv2/3, ISIS, BGP, EIGRP (v4).
> > >
> > > Also doing v4 & v6 multicast, SM, SSM, bidir, with abundant
> multicast
> > > replication bandwidth.
> > >
> > > Tim
> > >
> > >
> > > >Hopefully more docos are on the way which will detail all of this.
> > > >
> > > >_______________________________________________
> > > >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/
> > >
> > >
> > >
> > > Tim Stevenson, tstevens at cisco.com
> > > Routing & Switching CCIE #5561
> > > Technical Marketing Engineer, Data Center BU
> > > Cisco Systems, http://www.cisco.com
> > > IP Phone: 408-526-6759
> > > ********************************************************
> > > The contents of this message may be *Cisco Confidential*
> > > and are intended for the specified recipients only.
>
>
>
> Tim Stevenson, tstevens at cisco.com
> Routing & Switching CCIE #5561
> Technical Marketing Engineer, Data Center BU
> Cisco Systems, http://www.cisco.com
> IP Phone: 408-526-6759
> ********************************************************
> The contents of this message may be *Cisco Confidential*
> and are intended for the specified recipients only.