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Cisco VISM Installation and Configuration Guide
Release 3.0, Part Number OL-2521-01 Rev. D0, June 2004
Chapter1 Overvi ew of the VISM and VISM-PR Cards
Installing VISM Hardware and Software
The VISM-PR card can be used with the following Processor Module cards:
•PXM1
•PXM1E
•PXM45
You must install an additional fan tray spacer at the bottom of your MGX 8000 Series switch chassis
directly above the intake plenum if you are using the VISM-PR card in combination with the PXM45
card. Refer to the Cisco MGX 8850 Hardware Installation Guide, Release 3 for step-by-step instructions
to install a fan tray.
MGX 8850 and MGX 8250 Chassis
VISM and VISM-PR card installation in a Cisco MGX 8850 or MGX 8250 platform consists of instal ling
one front card and one back card (if not using the bulk distribution feature) in either the upper or lower
shelf of the chassis. You can use slots 1 to 6, 9 to 14, 17 to 22, and 25 to 30 to instal l VISM c ards (see
Figure 1-8).
Figure1-8 Available Chassis Slots for VISM Cards in the MGX 8850 and MGX 8250—Front View
Note If you use all the available slots, you can configure the MGX 8850 an d MG X 8 250 wi th u p to 24
VISM cards. However, the two lower shelf cellbuses can each sustain a bandwidth of one
OC-3/STM-1 link. This bandwidth limits the number of E1 ports on the lower she l f, when using the
G.711 codec, to 78, which limits the number of VISM card s to 10 .
VISM VISMVISMVISMVISMVISM
VISMVISM VISM VISMVISM VISMVISM
VISM VISM VISM VISM
VISM VISMVISM VISMVISM
VISM VISM
VISM VISM
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
12345678910111213141516
Upper Shelf Slots
Lower Shelf Slots
31428
U
pper
S
helf
L
ower
S
helf