Operating the ARN

Expansion Module LEDs

When the ARN has an installed expansion module, its interface LEDs are visible on the front panel. For the location of the optional ARN expansion module, see Figure 1-4 on page 1-9.

Note: The ARN base module boots to a fully operational state before bringing up expansion module interfaces.

Ethernet LEDs

Table 3-6 describes the expansion module LEDs for the second Ethernet2 interface.

Table 3-6.

Expansion Module Ethernet LEDs

 

 

 

LED

 

Meaning

 

 

 

Tx (Transmit)

 

Lights when the Ethernet interface is transmitting data over

 

 

the network.

 

 

 

Rx (Receive)

 

Lights when the Ethernet interface is receiving data from the

 

 

network.

 

 

 

Cl (Collision)

 

Lights when the Ethernet interface detects a collision on the

 

 

network.

 

 

 

Token Ring LEDs

Table 3-7 describes the expansion module token ring LEDs.

Table 3-7.

Expansion Module Token Ring LEDs

 

 

 

LED

 

Meaning

 

 

RCVR (Receiver)

Lights when the token ring interface is connected to the

 

 

network.

 

 

 

NSRT (Insert)

 

Lights when you insert the ARN into the token ring network.

 

 

WFLT (Wire Fault)

Lights when the token ring hardware detects a wire fault

 

 

condition.

 

 

 

114200-E Rev 00

3-5

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Nortel Networks Passport ARN Routers Expansion Module LEDs, Ethernet LEDs, Describes the expansion module token ring LEDs