[c-nsp] GigE cards for 6509

Fri Oct 15 08:39:20 EDT 2004

Hi Tim..

Just wanted to say thanks for the clarification.  I was really confused
on this issue and you've set it straight...:)

On Thu, 2004-10-14 at 22:57, Tim Stevenson wrote:
> Yikes! Lots of misunderstandings here folks!
> 
> Clarifying the architecture of 6148-GETX first of all. It is a classic 
> card, no fabric - so the 8G is not correct, you are perhaps thinking of the 
> fabric enabled (6548-GETX) version.
> 
> However, both 6148-GETX & 6548-GETX are 8:1 oversubscribed, which means you 
> will NEVER get more than 6G out of these cards. There are 2 backplane 
> interface ASICs, which are each 4x1G chips, but only 3x1G is used on each. 
> Each 1G port on these chips connects to another ASIC (a mux so to speak) 
> servicing 8 front panel ports. So 8 front panel ports share 1G of 
> bandwidth, and there are 6 groups of 8 ports (contiguous, so 1-8, 9-16, etc).
> 
> These cards are exclusively targeted for gig to the desktop/wiring closet 
> deployments, they are NOT intended for server connectivity or 
> high-performance data center deployments. They do not support jumbos, don't 
> support broadcast suppression, don't support distributed forwarding, but do 
> support optional IEEE & cisco inline power.
> 
> As for the 6516, it has both a bus connection & an 8G dedicated fabric 
> connection (in the presence of a fabric). It has full access to the bus 
> (not internally oversubscribed), assuming no fabric and no other cards are 
> arbitrating for it. Across the fabric, it is 2:1 oversubscribed. The 
> "equivalent" "upgrade" to this card would be a 6724 or 6748 card, which 
> requires sup720.
> 
> Tim
> 
> 
> At 03:15 PM 10/14/2004, cisco-nsp-request at puck.nether.net stated:
> >Message: 5
> >Date: Thu, 14 Oct 2004 15:37:26 -0500
> >From: "Church, Chuck" <cchurch at netcogov.com>
> >Subject: RE: [c-nsp] GigE cards for 6509
> >To: "Voll, Scott" <Scott.Voll at wesd.org>, "Paul Stewart"
> >      <pauls at nexicom.net>,     "Dave Breiland" <dave at opsource.net>
> >Cc: cisco-nsp at puck.nether.net
> >Message-ID: <16A2F11941294D469A25A7295F7A757303D49E4E at mspex01>
> >Content-Type: text/plain;     charset="us-ascii"
> >
> >I think the classic bus cards (61xx) are all 8GB full duplex.  Check CCO
> >for all the caveats involving SFMs, Sups, line cards, buses, etc.
> >Here's a decent link:
> >http://www.cisco.com/en/US/products/hw/switches/ps708/products_qanda_ite
> >m09186a0080159963.shtml
> >
> >
> >Chuck Church
> >Lead Design Engineer
> >CCIE #8776, MCNE, MCSE
> >Netco Government Services - Design & Implementation
> >1210 N. Parker Rd.
> >Greenville, SC 29609
> >Home office: 864-335-9473
> >Cell: 703-819-3495
> >cchurch at netcogov.com
> >PGP key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x4371A48D
> >
> >
> >-----Original Message-----
> >From: cisco-nsp-bounces at puck.nether.net
> >[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Voll, Scott
> >Sent: Thursday, October 14, 2004 4:23 PM
> >To: Paul Stewart; Dave Breiland
> >Cc: cisco-nsp at puck.nether.net
> >Subject: RE: [c-nsp] GigE cards for 6509
> >
> >I believe the back plain is 32Gig
> >
> >-----Original Message-----
> >From: cisco-nsp-bounces at puck.nether.net
> >[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Stewart
> >Sent: Thursday, October 14, 2004 1:08 PM
> >To: Dave Breiland
> >Cc: cisco-nsp at puck.nether.net
> >Subject: RE: [c-nsp] GigE cards for 6509
> >
> >That's good to know.. anyone know the actual card throughput on the 6148
> >card?  Tried to find it online but haven't found anything useful yet...
> >this card (either the 16 port GigE or 48 port 10/100/1000) won't be
> >taxed at all but it's nice to know you won't run out neither..:)
> >
> >Paul
> >
> >
> >On Thu, 2004-10-14 at 16:05, Dave Breiland wrote:
> > > I am guessing it relates, but my experience is with the older GIG/
> >GBIC
> > > cards.  You could buy 8 port and 16 port versions.  The problem was
> >that
> > > they both had the same amount of ASICs.  As such, your ports will have
> >less
> > > dedicated bandwidth, on the 16 port version.
> > >
> > > Just my cents of knowledge...
> > >
> > > Dave
> > >
> > > -----Original Message-----
> > > From: cisco-nsp-bounces at puck.nether.net
> > > [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Stewart
> > > Sent: Thursday, October 14, 2004 12:55 PM
> > > To: cisco-nsp at puck.nether.net
> > > Subject: [c-nsp] GigE cards for 6509
> > >
> > > We need some more GigE cards for our 6509.  I contacted our supplier
> > > today and was told that a WS-X6316-GE-TX 16 port copper GigE card
> >(which
> > > we already have one of and need another) is MORE money than a
> > > WS-X6148-GE-TX card which has 48 10/100/1000 ports on it.
> > >
> > > I'd be crazy not to buy a 6148 card it looks like... is there any
> > > catches that I should know of?  This seems too easy..;)
> > >
> > > We use these cards to connect servers but also run some basic QOS
> > > functions and Dot1Q trunking on some interfaces...
> > >
> > > Paul
> > >
> > >
> > > _______________________________________________
> > > 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/
> >
> >_______________________________________________
> >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/
> >
> >_______________________________________________
> >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, Catalyst 6500
> 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.
> 
> _______________________________________________
> 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/