[c-nsp] GigE cards for 6509

Thu Oct 14 22:57:55 EDT 2004

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
> >
> >
> > _______________________________________________
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> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/
>
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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
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