Hi! On Mar 27, 2007, at 8:01 PM, Ian Cox wrote:
> At 07:28 PM 3/27/2007 +0200, Arnold Nipper wrote: >> On 27.03.2007 17:51 Nick Griffin wrote >> >>> Let me rephrase, assume I have no reason. What would a selling >>> point be? I >>> cannot not find any good documentation regarding the memory. What >>> enhancements does it provide, more CAM entries, things of that >>> nature. >>> Perhaps I just need more information on the card, to help >>> understand the >>> need for additional memory that what it ships with by default. >>> >> >> IIRC this gives you more buffer for your line card. I.e. you will be >> able to buffer up to 1 GB worth of traffic. > > Not it does not give you more buffering on the line card. The larger > memory part is for the processor on the line card so it can hold > large FIB tables. Do I get this right... The memory is just for the DFC enabled cards? So why is there such a large amount of memory on the CFC only cards? There is no special data to store on the CFC line-cards except the interface queues (which seem to be somehow integrated into the interface chips)? I am not really familiar enough with this routers/switches architecture (but curious - as we plan to put some of those in various places). Does CFC mean that the whole packets are sent from line-card to the SUP and if the SUP-Engine decides that it should be transmitted on a port of the receiving line-card the packet goes over the backplane a second time? Or is just the header (whatever needed for the forwarding decision) sent to the SUP-Engine, ... ? Stoffi > >> It much depends what your application is. If you have sercer >> connected >> to that linecard having more buffer might be a good idea. Having >> connected routers you may not want yout switch to buffer too much. >> >> >> >> Arnold >> -- >> Arnold Nipper / nIPper consulting, Sandhausen, Germany >> email: [EMAIL PROTECTED] phone: +49 6224 9259 299 >> mobile: +49 172 2650958 fax: +49 6224 9259 333 >> _______________________________________________ >> cisco-nsp mailing list cisco-nsp@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@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ -- CHRISTOPH LOIBL ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ mailto:[EMAIL PROTECTED] |No trees were killed in the creation of this message. http://pix.tix.at |However, many electrons were terrible inconvenienced. CL8-RIPE ++++++++++++++++++++++++++++++++++++ PGP-Key-ID: 0x4B2C0055 +++ _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/