CANOGA PERKINS 9161 Network Interface Device - Manual (Page 17)

Hardware Installation 9161 Ethernet Network Interface Device User’s Manual
Power-Up, Hardware Functions, and LEDs
7/(8 Blank)
Figure 2-1. Remote Fault Signal
2.2.3 Link Loss Forwarding
When LLF is enabled, a fault on one side of the 9161 propagates to the other side to notify that
device and stops signal transmission (brings down the link) (see Figure 2-2). Set the LLF propa-
gation to 10G1 to 10G2, 10G2 to 10G1, or both directions. Set this in the User Interface.
Figure 2-2. Link Loss Forwarding Propagation
x
Tx
Rx
Rx
Tx
10G1
PORT 10G2
PORT
Local device Rx detects link loss
Tx transmits RMTF to remote device
Local device Rx turns OFF
Remote device Rx LED turns red
Tx
Rx
Rx
Tx
10G2
PORT
10G1
PORT
LOCAL DEVICE REMOTE DEVICE
x
FAULT
NO DATA
Tx
Rx
Rx
Tx
10G1
PORT 10G2
PORT
x
10G1 PORT TO 10G2 PORT
Link loss detected on 10G1 Port
Fault propogated to 10G2 Port
10G2 Port Tx stops transmitting data
10G2 Port Tx LED turns red
Link loss detected on 10G2Port
Fault propogated to 10G1Port
10G1 Port stops transmitting data
10G1 Port LED turns red
Tx
Rx
Rx
Tx
RMTF
10G1
PORT 10G2
PORT
x
10G2 PORT TO 10G1 PORT