discussion, we mention the types of switching possible on the 7000 series; a
detailed explanation will follow.
router may process switch, fast switch, and autonomous switch. If an SSP is
used in place of the SP, silicon switching is supported.
because additional features and network technology support have been
included. Simply put, a 7500 series does everything that a 7000 series does--
and more. The 7500 supports the same interface processors as the 7000,
including these new additions:
called a CyBus--Cisco Extended Bus--with a 1.067Gbps capacity. The 7505
has one CyBus, whereas the 7507 and 7513 have two CyBuses. The dual
backplanes in the higher-end 7500 series routers allow dual/redundant proces-
sors to be inserted simultaneously in the chassis. Not only are redundant pro-
cessors possible, but if one of the backplanes fails, you can simply move the
interface processor from one CyBus to the other (vacancy permitting).
power). Figure 4.5 depicts the relation between the RSP and IP slots on
a dual CyBus. It is important to realize that only one RSP is active at a
time. Although one RSP can control both CyBuses, traffic generated on
one CyBus does not affect the other. This means that the 7507 and 7513
series routers have a combined backplane speed of 2.134Gbps.