[c-nsp] 10GE card for 7609

[Saku Ytti]

On (2009-03-31 03:02 -0400), Paul Stewart wrote:

> I don't have the spec sheets handy but I do believe though that the 6708 is
> 1:2 oversubscribed though correct?  The 6704 is 1:1 if that's important to
> the application....

6704 is not exactly 1:1, while 6708 is exactly 1:2. So if you stick
play-doh on 4 ports in 6708 you have wire-speed card (FSVO wire-speed,
I really hate the term though, I mean wire-speed surely has to mean
overspeed of maxports-1 * maxportspeed?)
Also as an interesting curiosity LAN cards prior to 6708 are slow
to detect linedown, so if you're venturing inside the subsecond
convergency world, it is relevant.

> Paul
> 
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Gergely Antal
> Sent: Tuesday, March 31, 2009 2:55 AM
> To: Eric Gauthier
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] 10GE card for 7609
> 
> And also keep in mind that WS-X6708-10GE is a true line-rate card...
> 
> Eric Gauthier wrote:
> > Mark,
> > 
> > I'm not sure if you have other 10g links, but keep in mind that Cisco 
> > has (at least) two 10g optics - Xenpak and X2 - that are not
> intercompatible.
> > I believe that the 6704-10ge uses Xenpak and the 6708-10gE, which is 
> > the "same" card but with 8 ports, uses X2.  If everything else you do 
> > is X2, it might make sense to jump up to the 8 port card to prevent 
> > yourself from having to buy/spare two types of optics.
> > 
> > Eric :)
> > 
> > 
> > On Mon, Mar 30, 2009 at 02:41:12AM -0700, Mark Tech wrote:
> >> Hi
> >> I have a prospect for a 10G upstream customer and Upstream ISP
> connections. I would need to connect these into our 7609s running RSP
> 720-3CXL's, at the moment I have found that the WS-X6704-10GE card may be
> suitable.
> >>
> >> My technical requirements are:
> >> 10Gbps line rate
> >> IPv4
> >> Able to handle full Internet routing table Potentially IPv6 and MPLS 
> >> in the future
> >>
> >> With the WS-X6704-10GE, there seems to be several options that are
> available with it i.e.
> >>
> >> Memory Option: 
> >> MEM-XCEF720-256M
> >> Catalyst 6500 256MB DDR, xCEF720 (67xx interface, DFC3A) 
> >> MEM-XCEF720-512M Cat 6500 512MB DDR, xCEF720 (67xx interface, 
> >> DFC3A/DFC3B) MEM-XCEF720-1GB Catalyst 6500 1GB DDR, xCEF720 (67xx 
> >> interface, DFC3BXL)
> >>
> >> ====================================================
> >> Distributed Forwarding Card Option
> >>
> >> WS-F6700-CFC
> >> Catalyst 6500 Central Fwd Card for WS-X67xx modules WS-F6700-DFC3B 
> >> Catalyst 6500 Dist Fwd Card, 256K Routes for WS-X67xx WS-F6700-DFC3A 
> >> Catalyst 6500 Dist Fwd Card for WS-X67xx modules WS-F6700-DFC3BXL 
> >> Catalyst 6500 Dist Fwd Card- 3BXL, for WS-X67xx WS-F6700-DFC3C 
> >> Catalyst 6500 Dist Fwd Card for WS-X67xx modules WS-F6700-DFC3CXL 
> >> Catalyst 6500 Dist Fwd Card- 3CXL, for WS-X67xx
> >>
> >> I assume that I would need MEM-XCEF720-1GB and WS-F6700-DFC3CXL?
> >>
> >> Regards
> >>
> >> Mark
> >>
> >>
> >>       
> >>
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> 
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-- 
  ++ytti