
Product Description 27
.
2.3 Base Switch Overview
The
CP921RC
‐
30X
features
the
following
components
on
the
Base
Switch
board:
•
24
‐
Port
GbE
Switch
Fabric
with
three
Octal
1GbE
PHYs
•
Complex
Programmable
Logic
Device
(CPLD)
•
IPMI
Controller
(IPMC)
•
10Gigabit/1Gigabit
options,
including:
– Two
10GbE
ports
with
10GbE
PHY
and
SFP+
cages
– Two
1GbE
ports
with
GbE
PHY
and
SFP
cages
•
Front
panel
LEDs
for
link/activity
status
and
reset
•
Temperature
sensors
2.4 24-Port GbE Switch
The
Base
Switch
Board
incorporates
a
Switch
that
can
operate
at
10/100/1000
Mbps
for
24
Gigabit
Ethernet
ports,
and
on
select
models
includes
two
10GbE
ports
and
two
GbE
ports.
This
Switch
integrates
sophisticated
advanced
L3
switching
features
for
cost
‐
effective,
highly
‐
manageable
enterprise
networks.
The
Switch
performs
IPv6
routing
and
transition
services
in
hardware,
allowing
deployment
of
L3
switches
that
are
future
‐
proof,
highly
‐
manageable
L3
networks,
and
enable
cost
‐
effective
transition
from
IPv4
to
IPv6.
The
Switch
interfaces
to
the
Management
Board
via
a
32
‐
bit
PCI
bus
running
at
66
MHz,
through
which
the
Processor
on
the
Management
Board
configures
the
Switch.
The
Switch
interfaces
to
the
three
octal
PHYs
through
the
Serial
Gigabit
Media
Independent
Interface
(SGMII)
interface.
The
Switch
supports
PHY
management
through
the
serial
Management
Data
Input/Output
(MDIO)
/
Management
Data
Clock
(MDC)
interface.
Fabric Link
Connection
As
shown
in
Figure
2
‐
1,
all
24
ports
are
routed
to
the
Rear
Transition
Module
(RTM)
for
the
CPC921RC
‐
300
and
CPC921RC
‐
300
‐
IND.
For
the
CP921RC
‐
301,
Ports
1–21
and
Port
24
are
routed
to
the
RTM.
Ports
22
and
23
are
routed
to
the
front
panel
1GbE
SFP
ports.
Port
24
is
routed
to
the
Fabric
‐
to
‐
Fabric
link
of
the
PICMG
2.16
backplane
only
when
using
the
TRCP9xx
‐
5RC
‐
F
RTM
as
shown
in
Figure
2
‐
2.
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