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The following tables outline the recommended switch settings for the OSD2151. Any changes in switch
settings require power up to take effect.
Configurations
Switch
Setting
1. LLF detects fiber &
copper
2. LLF is enabled
Configurations
3. Fiber port is
100BASE-FX
Response
Disable Tx of copper port
Action
Fiber link
loss
1. Fix fault and reconnect
Restore
2. Wait for link to be reestablished
Sequence
Response
Disable Tx of fiber port
Action
Copper
link loss
1.Fix fault and reconnect
Restore
2.Wait for link to be reestablished
Sequence
Configurations
Switch
status
1. Invalid
2. LLF is disabled
Configurations
3. Fiber port is
of SIP switch
1000BASE-X
Response
Action
Fiber link
loss
Restore
Sequence
Response
Action
Copper
link loss
Restore
Sequence
PAGE 15
OPTICAL SYSTEMS DESIGN
Table 5: CONFIGURATION WITH LLF ENABLED
Case1
1. LLF detects fiber &
copper
2. LLF is enabled
3. Fiber port is
1000BASE-X
TABLE 6: CONFIGURATION WITH LLF DISABLED
Case1
1. Invalid
2. LLF is disabled
3. Fiber port is
1000BASE-X
NULL
NULL
NULL
NULL
OSD2151 OPERATOR MANUAL
Case2
Case3
1. LLF detects fiber
only
2. LLF is enabled
3. Fiber port is
100BASE-FX
Disable Tx of copper port
1. Fix fault and reconnect
2. Wait for link to be reestablished
NULL
NULL
1. Invalid
2. LLF is disabled
3. Fiber port is
100BASE-FX
Case4
1. LLF detects fiber
only
2. LLF is enabled
3. Fiber port is
1000BASE-X
Case2
1. Invalid
2. LLF is disabled
3. Fiber port is
100BASE-FX
NULL
NULL
NULL
NULL
DOC ID: 10110603
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