Crossbar Switching Fabric

Crossbar Switching Fabric

Crossbar switching uses a bolt composed of a

matrix

. In added words, the amount of the switch

is a alternation of cross-points, area every ascribe interface has absolute admission to the matrix, resulting

in a absolutely non-blocking architecture. This architecture is at the affection of abounding blast switches.

What is common, however, is to abate the admeasurement of the cast by not giving every anchorage its own

path to the matrix, but instead giving every band agenda absolute access. Of course, some prioritization

and altercation administration is bare on the band cards, but the adjustment is still extremely

fast. Add to this the added availability created by a additional cast (with band cards attached

to each), and you ability accurately accredit to it as “essentially non-blocking.”

Figure 21.4 shows the basal adjustment for a accumulation of band cards affiliated to a distinct crossbar

switch.

FIGURE 2 1 . 4

Crossbar switching fabric

Fabric Interlaces
Line Cards