Auto Negotiation - Avaya P550R Installation Manual

Chapter 1
CAUTION
Auto
Negotiation
Issues
1-10
Figure 1-7. Using the Ejectors
Captive
Screws
7. Tighten the captive screws (see Figure 2-7).
Ensure that all adjacent modules are seated and the captive screws
are secured. Failure to do this may result in difficulty installing other
modules into the chassis.
You may experience difficulties with auto-negotiation between
some versions of the 10/100Base-TX module and adapter cards
using physical interfaces manufactured by National Semiconductor.
The symptom is loss of connectivity. You can address this problem
by either disabling auto-negotiation and manually configuring the
speed and duplex of the mirror port and network card, or using a
patch cable longer than 5 meters.
Avaya P550R/P580/P880/P882 MultiService Switch Installation Guide, v5.3