Verifying the vcs fabric configuration, Vlag cannot be formed, Verifying the link between the vcs fabric switches – Brocade Network OS Administrator’s Guide v4.1.1 User Manual
Page 710: Verifying lacpdus, Refer to
NOTE
It is not necessary to reboot the switch to enable the VCS Fabric license.
switch# show license
Rbridge-Id: 66
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
FCoE Base license
Feature name:FCOE_BASE
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
VCS Fabric license
Feature name:VCS
Refer to the Network OS Software Licensing Guide for more information about license
management.
Verifying the VCS Fabric configuration
To verify the VCS Fabric configuration, complete the following steps.
1. Enter the show vcs command on each switch to verify that the VCS Fabric mode is enabled, the
VCS ID on each switch is the same, and the RBridge ID on each switch is different.
2. Enter the show fabric isl command to verify whether the ISL is up.
3. Enter the show fabric islports command to examine the status of each port.
ISL does not come up on some ports
on page 685 for details and corrective action.
vLAG cannot be formed
A vLAG trunk can fail to form for several reasons:
• The link between the VCS Fabric switches does not exist. Refer to
Verifying the link between the
• A bad connection causes abnormal reception or transmission of LACPDUs. Refer to
on page 710.
• Port-channel numbers are not the same on the VCS Fabric switches. Refer to
on page 711.
• The peer switches are not configured in the same LACP mode (static or dynamic). Refer to
Verifying the LACP mode of each switch
on page 711.
• A 1-Gbps port-channel has been upgraded to Network OS 2.1.x or later. Refer to
the speed for a 1-Gbps port-channel
Verifying the link between the VCS Fabric switches
The link between switches could be broken for various reasons:
• A port is not activated.
• The ISL is segmented.
• The VCS Fabric is not properly formed.
• The CPU is overload.
ISL does not come up on some ports
on page 685 for details on detecting and correcting the
problem.
Verifying LACPDUs
LACPDUs should be transmitted and received on both ends of the vLAG. This procedure verifies
whether that is happening, and also checks for PDU errors.
Verifying the VCS Fabric configuration
710
Network OS Administrator’s Guide
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