Cisco Cisco 12000 Series 1-Port OC-48 STM-16 POS SDH ISE Line Card

 lists some approximate attenuation values from the ANSI standard, and shows the RG-179 

attenuation. As you can see, RG-179 has a much higher attenuation, so take this information into account 
if you plan long runs of RG-179 cable.

The following sections describe how to verify and troubleshoot the line card installation:

Many new line cards are designated as administratively down by default. Status LEDs are off until you 
configure the interfaces and use the no shutdown command.

During a typical line card boot process, the following events occur:

The line card maintenance bus (MBus) module receives power and begins executing the MBus 
software.

The line card MBus module determines the type of card on which it resides, performs internal 
checks, and prepares to accept the Cisco IOS software from the RP.

The RP powers up the line card and loads the line card with its Cisco IOS software.

To verify that the line card is working properly, perform the following operational checks:

During the line card boot process, observe the line card alphanumeric LEDs to ensure that the card 
is running the typical initialization sequence. The sequence should end with IOS RUN.

Observe the line card status LEDs to verify that the Active LED (Link LED or status LED for line 
cards with no Active LED) is on. If an Active LED is not on, verify that the associated interface is 
not shut down.

 

1 MHz

0.27

1.2

2.4

3.0

10 MHz 

0.80

3.6

7.2

5.3

50 MHz 

1.82

8.2

16.4

8.5

100 MHz

2.64

11.9

23.8

10.0