Cisco Mgx 8220 Shelf; Figure; Front View Of The Cisco Mgx 8220 Shelf With Cards Installed; Rear View Of The Cisco Mgx 8220 Shelf - Cisco MGX 8220 Installation And Configuration Manual

Chapter

Figure 2-1

Figure 2-2
Cisco MGX 8220 Backplane
The Cisco MGX 8220 backplane contains a main system bus, and the cell bus for communication
between card slots. The cell bus consists of two pairs of unidirectional buses (for redundancy), which
are used for transferring cells between the cell bus slave modules (FRSM, AUSM, ASC) and the cell
bus master (BNM).
The backplane also contains a local bus, which permits the ASC to configure and monitor the BNM and
SRM, a BERT bus for bit error rate testing, and a redundancy bus for support of 1:N service module
redundancy.
The backplane distributes –48V DC power to all card slots, and all modules are hot insertable.
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

Front View of the Cisco MGX 8220 Shelf with Cards Installed

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
ACT ACT
ACT ACT ACT ACT
STBY STBY
STBY STBY STBY STBY
FAIL FAIL
FAIL FAIL FAIL FAIL
PORT PORT
LAN LAN PORT 1 PORT 1
MIN MIN
PORT 2 PORT 2
MAJ MAJ
PORT 3 PORT 3
DC-A DC-A
DC-B DC-B
PORT 4 PORT 4
ACO ACO
HIST HIST
ACO ACO
HIST HIST
FRSM FRSM
BNM BNM
ASC ASC
T3 T3 4E1-C 4E1-C
1 2 3 4 5 6

Rear View of the Cisco MGX 8220 Shelf

16 15 14 13 12 11
DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1
1B power
connector
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
ACT ACT ACT ACT
STBY STBY STBY STBY
FAIL FAIL FAIL FAIL
PORT 1 PORT 1 PORT 1 PORT 1
PORT 2 PORT 2 PORT 2 PORT 2
PORT 3 PORT 3 PORT 3 PORT 3
PORT 4 PORT 4 PORT 4 PORT 4
FRSM FRSM FRSM FRSM
4E1-C 4E1-C 4E1-C 4E1-C
7 8 9 10 11 12
10 9 8 7 6 5
DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1 DB15-4T1
1A power
P1 cooling
connector
assembly
connector
Cisco MGX 8220 Installation and Configuration

Cisco MGX 8220 Shelf

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
13 14 15 16
4 3 2 1
T3E3-B T3E3-B
ASC ASC
2-3