Re: [c-nsp] Forwarding bandwidth vs. Switching bandwidth
Yes, like a 2GB circuit, in reality is 1Gb bidirectional. That funny marketing math. if (marketing=true) then (throughput=unidirectional-rate*2) On 08/04/2010 01:39 PM, Asbjorn Hojmark - Lists wrote: It's really quite simple: 48x1G downlinks + 2x10G uplinks + 2x10G stacking = 88G non-blocking 88G x marketing = 176G -A ___ 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/
Re: [c-nsp] Forwarding bandwidth vs. Switching bandwidth
It's really quite simple: 48x1G downlinks + 2x10G uplinks + 2x10G stacking = 88G non-blocking 88G x marketing = 176G -A ___ 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/
Re: [c-nsp] Forwarding bandwidth vs. Switching bandwidth
On 04/08/2010 19:11, Brian Landers wrote: > Need some help deciphering Cisco marketing-speak. In the data sheet > for the Catalyst 2960S, they list: > > Forwarding Bandwidth > 88 Gbps > 20 Gbps for FlexStack Stacking > > Switching Bandwidth > 176 Gbps 88Gbps forwarding bandwidth full duplex == 176Gbps bandwidth half duplex. I.e. it will switch in both directions at the same time. I always buy switches which operate in both directions at the same time. Don't you? The 20Gbps flexstack bandwidth refers to the dual 10G stacking ports. If you google for "flexstack 2960", the first entry is a white paper on how 2960S FlexStack works. It notes mid-way down: "The FlexStack links are full duplex 10Gbps Ethernet links". > http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/white_paper_c11-578928.html Nick ___ 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/
Re: [c-nsp] Forwarding bandwidth vs. Switching bandwidth
Classic marketeer speak. 88 * 2 = 176 They count each frame as in comes in and again as it goes out. Chris On Wed, Aug 4, 2010 at 1:11 PM, Brian Landers wrote: > Need some help deciphering Cisco marketing-speak. In the data sheet > for the Catalyst 2960S, they list: > > Forwarding Bandwidth > 88 Gbps > 20 Gbps for FlexStack Stacking > > Switching Bandwidth > 176 Gbps > > > http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/product_data_sheet0900aecd80322c0c.html > > Can anyone explain the difference? Google only returns links to the > data sheet itself or a couple of forum threads asking the same > question. > > Thanks, > Brian > > > -- > Brian C Landers > http://www.packetslave.com/ > CCIE #23115 > ___ > 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/
[c-nsp] Forwarding bandwidth vs. Switching bandwidth
Need some help deciphering Cisco marketing-speak. In the data sheet for the Catalyst 2960S, they list: Forwarding Bandwidth 88 Gbps 20 Gbps for FlexStack Stacking Switching Bandwidth 176 Gbps http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/product_data_sheet0900aecd80322c0c.html Can anyone explain the difference? Google only returns links to the data sheet itself or a couple of forum threads asking the same question. Thanks, Brian -- Brian C Landers http://www.packetslave.com/ CCIE #23115 ___ 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/
