1-2
C
HAPTER
1: I
NTRODUCTION
A larger-scale TR-in-FE configuration appears in
Figure 1-2
.
Such a system allows both token ring and Ethernet devices
to share the same Fast Ethernet physical wiring infrastructure
and server base. Servers that are to be used for both token
ring and Fast Ethernet clients must be equipped with both
3C395 and Fast Ethernet NICs.
Figure 1-2
Larger-Scale TR-in-FE System
The 3C395 NIC is based on 3Com Fast Ethernet
technology. The NIC has the following features:
■
Parallel Tasking
architecture for high throughput and
low processor utilization
■
Support for full-duplex operation
■
Support for PCI 2.0 or higher specifications
■
32-bit bus master design
■
Status LEDs
■
Single shielded RJ-45 connector
■
Support for Category 5 unshielded twisted-pair (UTP)
cabling for 100BASE-TX Fast Ethernet networks
1x
2x
3x
4x
5x
6x
7x
8x
9x
10x
11x
12x
100BASE-T4
STATU
S
UNIT
1 2
3
4 5
6 7
8 9 10
11 12
13
PARTITION
LINK
ACTIVITY
OVERTEM
P
COLLISIO
N
PWR
SuperStack II
Hub 100 T4
SUPER
STACK
®
1x
2x
3x
4x
5x
6x
7x
8x
9x
10x
11x
12x
100BASE-T4
STATUS
UNIT
1 2
3
4 5
6 7
8 9
10 11
12
13
PARTITIO
N
LINK
ACTIVITY
OVERTEM
P
COLLISION
PWR
SuperStack II
Hub 100 T4
SUPER
STACK
®
®
SUPER
STACK
SuperStack II
LS 2000
100BASE-TX
DOWNLINK
100BASE-TX
®
LinkSwitch
3000
SUPER
STACK
SuperStack II Switch 2000 TR
with TR-in-FE module
SuperStack II Hub 100
SuperStack II Switch 3000
SuperStack II Hub TR
16/4 Mbps
token ring clients
Ethernet
clients
Token ring
servers
Servers with both
3C395 and Fast Ethernet NICs
