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TROUBLESHOOTING
4-3
Table 4-3 indicates the state of the A/B Link LEDs.
Table 4-3. Link LEDs
A p S B State
Green N/A N/A Green Ports Enabled & Active
Green Green Off Green THRU A, MAC on Primary,
Secondary Bypasses Board
Green Green Yellow Green THRU A, MAC on Primary,
No MAC on Secondary
Green Off Green Green THRU B, MAC on Secondary,
Primary Bypasses Board
Green Yellow Green Green THRU B, MAC on Secondary,
No MAC on Primary
Green Yellow Off Green THRU, No MAC on Primary,
Secondary Bypasses Board
Green Off Yellow Green THRU, No MAC on
Secondary, Primary Bypasses
Board
Green Green Red Yellow WRAP A, MAC on Primary
Green Yellow Red Yellow WRAP A, No MAC on
Primary
Yellow Green Red Green WRAP B, MAC on Primary
Yellow Yellow Red Green WRAP B, No MAC on Primary
Green Green Red Green WRAP AB, MAC on Primary
Green Off Off Green BYPASS Primary & Secondary
Green Red Red Green TWISTED A-A, B-B
Yellow Off Off Yellow PCM did not complete, Not
Active
Red Off Off Red Ports Disabled