Allied Telesis AT-2973T User Manual

Page of 176
Chapter 11: Troubleshooting
150
Solving Broadcom Boot Agent and Broadcom Advanced Server 
Program (BASP) Issues
This section discusses issues with the Broadcom Boot Agent and 
Broadcom Advanced Server (BASP) as well as provides solutions.
Problem: Unable to obtain network settings through DHCP using PXE. 
Solution: For proper operation, make sure that the Spanning Tree 
Protocol (STP) feature is disabled or that portfast mode (for Cisco 
switches) is enabled on the port to which the PXE client is connected. For 
instance, set spantree portfast 4/12 enable. 
Problem: A BASP team in Windows Server 2003 may not function 
properly if a team member driver property is modified. 
Solution: Due to a limitation in Windows Server 2003, the features of 
team members should remain static during the entire life of the team. To 
change the characteristics of a team member, remove the team member 
from the team, modify the team member, and then the adapter to the team 
again. This limitation does not exist in Windows Server 2008 or Windows 
Server 2008 R2. 
Problem: A system containing an 802.3ad team causes a Netlogon 
service failure in the system event log and prevents it from communicating 
with the domain controller during boot up. 
Solution: Microsoft Knowledge Base Article 326152 (
http://
support.microsoft.com/kb/326152/en-us
) indicates that Gigabit Ethernet 
adapters may experience problems with connectivity to a domain 
controller due to link fluctuation while the driver initializes and negotiates a 
link with the network infrastructure. The link negotiation is further affected 
when the Gigabit adapters are participating in an 802.3ad team due to the 
additional negotiation with a switch required for this team type. As 
suggested in the Knowledge Base Article above, disabling media sense as 
described in a separate Knowledge Base Article 239924 (
http://
support.microsoft.com/kb/239924/
) has shown to be a valid workaround 
when this problem occurs. 
Problem: The 802.3ad team member links disconnect and reconnect 
continuously (applies to all operating systems). 
Solution: This is a third-party issue. It is seen only when configuring an 
802.3ad team with more than two members on the server and connecting 
an HP2524 switch, with LACP enabled as passive or active. The HP 
switch shows an LACP channel being brought up successfully with only 
two team members. All other team member links disconnect and 
reconnect. This issue does not occur with the Cisco Catalyst 6500 switch.