11-8
Cisco Network Modules Hardware Installation Guide
OL-2485-20
Chapter 11 Connecting ATM Network Modules
ATM OC-3 Network Modules
Figure 11-14 ATM OC-3/STM-1 Circuit Emulation Service Network Module LEDs
Hardware Compatibility with Cisco 3620 Routers
Cisco 3620 routers require a minimum PCMCIA controller revision level to recognize ATM OC-3
network modules; otherwise, an error message appears. Cisco 3620 routers installed in the field before
April 1999 contain a Revision C PCMCIA controller, which is not compatible with these modules.
Starting in April 1999, all Cisco 3620 routers shipped from the factory include Revision E PCMCIA
controllers, which are fully compatible with all three ATM OC-3 network modules.
You can identify the version of PCMCIA controller in your Cisco 3620 router by entering the
show pci
hardware
command in privileged EXEC mode, or by examining the part number on the motherboard.
Supported versions are shown in
Table 11-5
.
The output of the
show pci hardware
command looks similar to this:
Router#
show pci hardware
Table 11-4
ATM OC-3 Network Module LEDs
LED
Color
Meaning
EN
Green
Module has passed its self-tests and is available to the
router.
RCLK
Green
Receive clock has been detected.
FERF
Yellow
Far-end receive failure.
OOF
Yellow
Out of frame.
AIS
Yellow
Alarm indication signal.
CES
Green
An active CES connection is established (ATM
OC-3/STM-1 circuit emulation service network
module only).
26912
ATM
1A-OC3
MM-1V
CES
VO
EN
FERF OOF AIS
RCLK
ATM 0
CES LED
FERF LED
OOF LED
AIS LED
RCLK LED
Enable LED
TX
RX
Table 11-5
Cisco 3620 Router Versions for ATM OC-3 Network Modules
Does Not Support ATM OC-3
Supports ATM OC-3
PCMCIA controller
0x22, 0xE2
0x20, 0xE0
Motherboard
73-1850-10 and older
73-1850-11 or newer