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Document No. 650-100-700, Issue 1
8-3
Configuring Ports
It may seem that because the FLP and the normal link pulse use the same
interval at the same frequency, older devices may not be compatible with
auto-negotiation. This is, however, not the case. For example, a 10Base-T
device that does not have auto-negotiation capabilities sees FLP bursts
simply as a link test signal. A 10Base-T device will respond to the FLP
burst with its usual normal link pulse signal. At the other end of the link, a
10/100-capable device will recognize normal link pulse and choose 10Mbps
mode operation.
Auto-negotiation attempts to find the greatest common denominator for the
two devices on the link in the following order of preference:
1. 100Base-TX full-duplex
2. 100Base-T4
3. 100Base-TX
4. 10Base-T full-duplex
5. 10Base-T half-duplex
* Note: T4: 100 Mbps with 8B/6T coding scheme
Once the greatest common denominator of settings is determined, each
device equipped with auto-negotiation will configure itself automatically. In
certain cases where automatic configurations are not desired, auto-
negotiation provides a way for these settings to be overridden manually.
* Note: Auto-negotiation should be disabled only on 50-series modules
that have remote fault detection enabled. Do not disable auto-
negotiation on 80-Series gig links.
lists the gigabit modules that do not support auto negotiation:
Table 8-1. Gigabit Modules not Supporting Autonegotiation
Gigabit Module Model Number
Hardware Revision
M5502-1000SX-F
M or earlier
M5502-1000LX-F
M or earlier
M5502-1000SLX-F
F or earlier
M5504-1000SX-F
H or earlier
M5504-1000LX-F
H or earlier
M5504-1000SLX-F
H or earlier
M5502R-1000SX-F
J or earlier
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Summary of Contents for Cajun P580
Page 26: ...xxvi User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Preface...
Page 50: ...1 24 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 1...
Page 158: ...5 24 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 5...
Page 308: ...10 18 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 10...
Page 508: ...16 26 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 16...
Page 530: ...18 14 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 18...
Page 622: ...21 22 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 21...
Page 652: ...23 20 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 23...
Page 660: ...24 8 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 24...
Page 714: ...25 54 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0 Chapter 25...
Page 728: ...Appendix B B 4 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0...