Connecting Serial Network Modules to a Network 6-13
16-Port and 32-Port Asynchronous Serial Network Module
Figure 6-6
4-Port Serial Network Module LEDs
16-Port and 32-Port Asynchronous Serial Network Module
This section provides information about the following network modules for Cisco modular
routers:
•
16-port asynchronous network module—(Cisco product number NM-16A). (See
Figure 6-7.)
•
32-port asynchronous network module—(Cisco product number NM-32A). (See
Figure 6-8.)
When used with corresponding octal cables, these modules provide 16 or 32 EIA/TIA-232
data terminal equipment (DTE) serial interfaces. Speeds up to 134.4 kbps are supported.
Table 6-6
4-Port Serial Network Module LEDs
LED
Meaning
CN/LP
Connect when green, loopback when yellow
RXC
Receive clock
RXD
Receive activity
TXC
Transmit clock
TXD
Transmit activity
H9599
CN/LP RXC
SERIAL 3
SERIAL 2
SERIAL 1
SERIAL 0
RXD
TXC
TXD
CN/LP RXC
RXD
TXC
TXD
CN/LP RXC
RXD
TXC
TXD
CN/LP RXC
RXD
TXC
TXD
EN
SERIAL
4T
Serial port LEDs
Enable LED
Содержание 2600 Series
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