8 Rev 2.2 • 27 Mar 10
1. Introduction
Signal Rates and Flow
sent to the second router. From the expansion connection on the first router, the signal is sent
directly to the corresponding expansion connection on the second router and then directly to that
output card.
Figure 1-4 illustrates the signal flow for two connected NV8576-Plus routers. Outputs 577–864 on
the first router (Router 1) through the output connections to the second router (Router 2) and the
reverse flow of signals between the two routers.
Figure 1-4. Example of Signal Flow Between Two NV8576-Plus Routers
Slots and Corresponding Signal Numbers
Signals are received and distributed through I/O cards and connectors housed on a backplane. The
I/O card and number and type of connectors varies depending on whether the signal is an input or
output, and whether the frame is a standalone router (NV8144, NV8280 or NV8576) or in
expanded mode and connected to a second router frame (NV8280-Plus or NV8576-Plus).
Each signal is assigned a number that corresponds to the physical input or output connector and to
the slot in which an input card or output card is installed. In the NV8500 family, each backplane in
a standalone frame contains either 9 input connectors or 18 output connectors. (See Backplanes
on
page 29.) This means that in the standalone router frame, Input Slot 1 corresponds to inputs 1–9,
Input Slot 2 corresponds to inputs 10–18, and so on, up to the maximum. Output slots are similarly
FAN
LOCAL OUTPUTS
1144
INPUTS
1144
XPT
(16 cards)
LOCAL OUTPUTS
289 432
(16 cards)
(16 cards)
INPUTS
289 432
(16 cards)
INPUTS
145 288
(16 cards)
INPUTS
433 576
(16 cards)
(not used)
FAN
INPUT MONITOR
OUTPUT MONITOR
SEC. CONTROL
PRIM. CONTROL
XPT
XPT
XPT
XPT
XPT
XPT
XPT
REDUNDANT CROSSPOINT
OUTPUTS 577720
TO OTHER FRAME
OUTPUTS 8651008
TO OTHER FRAME
FAN
LOCAL OUTPUTS
577720
INPUTS
577720
INPUT MONITOR
(16 cards)
LOCAL OUTPUTS
8651008
(16 cards)
OUTPUT MONITOR
(16 cards)
INPUTS
8651008
(16 cards)
INPUTS
721864
(16 cards)
INPUTS
100 9 1152
(16 cards)
(not used)
FAN
SEC. CONTROL
PRIM. CONTROL
REDUNDANT CROSSPOINT
OUTPUTS 1144
TO OTHER FRAME
OUTPUTS 289 432
TO OTHER FRAME
(INPUTS 1288)
(OUTPUTS 1288)
(INPUTS 1288)
(OUTPUTS 577 864)
(INPUTS 289576)
(OUTPUTS 1288)
(INPUTS 289576)
(OUTPUTS 577 864)
(INPUTS 1288)
(OUTPUTS 289576)
(INPUTS 1288)
(OUTPUTS 8651152)
(INPUTS 289576)
(OUTPUTS 289576)
(INPUTS 289576)
(OUTPUTS 8651152)
XPT
(INPUTS 577 864)
(OUTPUTS 577 864)
XPT
(INPUTS 577 864)
(OUTPUTS 1288)
XPT
(INPUTS 8651152)
(OUTPUTS 577 864)
XPT
(INPUTS 8651152)
(OUTPUTS 1288)
XPT
(INPUTS 577 864)
(OUTPUTS 8651152)
XPT
(INPUTS 577 864)
(OUTPUTS 289576)
XPT
(INPUTS 8651152)
(OUTPUTS 8651152)
XPT
(INPUTS 8651152)
(OUTPUTS 289576)
LOCAL OUTPUTS
145 288
(16 cards)
LOCAL OUTPUTS
433 576
(16 cards)
OUTPUTS 721864
TO OTHER FRAME
OUTPUTS 1009 1152
TO OTHER FRAME
LOCAL OUTPUTS
721 864
(16 cards)
LOCAL OUTPUTS
100 9 1152
(16 cards)
OUTPUTS 145 288
TO OTHER FRAME
OUTPUTS 433 576
TO OTHER FRAME
INPUT MONITOR
OUTPUT MONITOR
INPUT MONITOR
OUTPUT MONITOR