3com 8807 사용자 설명서
12
C
HAPTER
1: P
RODUCT
O
VERVIEW
Switch 8814
Figure 6 Switch 8814 slots
■
The Switch 8814 chassis provides 14 slots in its board area: The middle two
accommodate fabric modules, which can operate in 1+1 redundancy mode;
the remaining 12 accommodate I/O or application modules, which you can
select from various available models. All modules in this area are
hot-swappable.
accommodate fabric modules, which can operate in 1+1 redundancy mode;
the remaining 12 accommodate I/O or application modules, which you can
select from various available models. All modules in this area are
hot-swappable.
■
At the bottom of the chassis is the power area that can accommodate one PoE
entry module and two PSUs. The two PSUs are online-swappable. The switch
supports AC power inputs.
entry module and two PSUs. The two PSUs are online-swappable. The switch
supports AC power inputs.
■
On the right of the chassis is the fan area that contains two vertical
hot-swappable fan trays. The fan trays draw and exhaust air from left to right.
hot-swappable fan trays. The fan trays draw and exhaust air from left to right.
Backplane
The backplane of the Switch 8800 Family allows high-speed data exchange
between fabrics and I/O modules, as well as the exchange of various management
and control signals in the system.
between fabrics and I/O modules, as well as the exchange of various management
and control signals in the system.
Functions
The following are the main functions of the backplane:
■
Providing communication channels for signal exchange between boards
■
Supporting board hot-swapping
■
Supporting auto-discovering boards in slots
■
Connecting PSUs, distributing power and providing monitor channels to
various components (PSUs, fabrics and I/O modules) in the chassis.
various components (PSUs, fabrics and I/O modules) in the chassis.
Structure
■
Switch 8807
Fabric
Fabric
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
I/O Module
AC PSU
PoE
entry
AC PSU
Fa
n
n
tr
a
a
y
1
F
a
n
tr
a
a
y
2