Backplane of Switch / Stack Backplane of a Switch

All module or ports connect on backplane of switch.

http://www.cspi.com/multicomputer/products/2000_SERIES/images/StarGate_2923.jpg

http://www.cisco.com/univercd/illus/2/41/22041.gif

backplane capacity between ports or modules comminication on switch

You have Passive Backplane and Active Backplane. Passive: Where you don't have Controller (Management) on the board . Example: 8200 series. Active: Where you have Controller and management of the switch on board. Example: 5400 series.

connect to switch port or module backplane on switch each port 100 or 1000 mbps connect switch backplane but provision asic switch different way connect backplane each module two line connect backplane for example 5400 switch have active backplane switch fabric chip on backplane board each module two 14.4 Gpbs link connect backplane namely one module 28.8 Gbps connect back plane 8212 switch have passive backplane switch fabric chip on switch fabric module each module connect two 14,4 Gbps line to fabric module back board not keep fabric chip backplane calculator we have 100 Mbps 24 port 1000Mbps 2 port swtich for example 2626 100 Mbps x2(full duplex)200Mbps one port x 24 port = 4800 Mbps** 1000Mbps x2(full duplex)2000Mbps one port x 2 port = 4000 Mbps 4000Mbps+4800 Mbps =8800 Mbps =8,8 Gbps real backplane requirement please look back plane capacity 2626 switch www.procurve.com but chasis type switch different back plane capacity because each module seperate like switch

Back plane utilization guide: http://www.cisco.com/en/US/tech/tk389/tk816/technologies_tech_note09186a0080094a96.shtml

check 1 model:

http://cisco.com/en/US/prod/collateral/switches/ps5718/ps5528/product_data_sheet09186a00801f3d7d.html