Administrator's Guide v4.1.1 Manual

Process exceptions can sometimes occur with the L2SYSD process when combinations of ACL limits
are approached or exceeded.
Constant MAC learning and flushing can occur when ASIC table limitations are exceeded. Layer 2
frame switching can fail if the number of MAC address table entries is exceeded.
Troubleshooting standard issues
This section describes some potential problems you may encounter and suggestions on how to
investigate or resolve each issue. If these steps do not lead to resolution of the problem, prepare a case
for your switch provider, as described in Contacting Brocade Technical Support on page 21.
• AMPP is not working on page 677
• Panic reboots are continuous on page 680
• CID card is corrupted on page 680
• CPU use is unexpectedly high on page 682
• ECMP not load balancing as expected on page 682
• ENS not working correctly on page 682
• FCoE devices unable to log in on page 683
• Traffic is not being forwarded on page 684
• ISL does not come up on some ports on page 685
• License is not properly installed on page 688
• Packets are dropped in hardware on page 689
• Need to recover password for Brocade VDX 8770 or VDX 67xx on page 697
• Ping fails on page 705
• QoS configuration causes tail drops on page 705
• QoS is not marking or treating packets correctly on page 705
• RBridge ID is duplicated on page 706
• SNMP MIBs report incorrect values on page 706
• SNMP traps are missing on page 706
• Telnet operation into the switch fails on page 706
• Trunk member not used on page 707
• Upgrade fails on page 709
• VCS Fabric cannot be formed on page 709
• vLAG cannot be formed on page 710
• Zoning conflict needs resolution on page 711
• Zone does not form correctly on page 712
AMPP is not working
Configuring Brocade Automatic Migration of Port Profiles (AMPP) is complex. It works in standalone
mode and VCS Fabric mode. For details on configuring AMPP, refer to Configuring AMPP on page 327.
Problems encountered while using AMPP are usually the result of configuration errors in the port-profile
itself, errors in the associated virtual machine (VM) configuration, or compatibility problems between the
host adapters and AMPP. Specifically, AMPP problems can be caused by the following conditions:
• A port-profile configuration does not exist on the target switch or does not contain a basic switchport
and VLAN configuration. Refer to Verifying the port-profile configuration on page 678.
• The VM MAC address does not appear in the MAC address table. Refer to Verifying the VM MAC
address on page 678.
Troubleshooting standard issues
Network OS Administrator’s Guide 677
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