HP Insight Management-Software User Manual
Page 157
The following scenarios reproduce this issue for a VC Domain running VC firmware version 3.70
with IGMP NoFlood enabled in a VC Domain Group running Domain Group firmware mode prior
to 3.7x:
Adding a 3.70 or later VC Domain to a VC Domain Group in compatibility mode (3.30 or 3.50)
If a VC 3.70 Domain with IGMP NoFlood enabled is added to a VC Domain Group running
Domain Group Firmware Mode prior to 3.70 with IGMP Snooping disabled and the administrator
selects the VCEM option to overwrite the VC Domain 3.70 configuration. This is an uncommon
scenario because this option is only available for VC Domains without any server profiles.
If this occurs, use the following workaround:
1.
Wait until the VC Domain restores communication with VCEM. The communication is restored
when you are able to login to the VCM web interface.
2.
Use the VCM CLI to remove the external manager account (if present) from the VC Domain
that failed to be added to the VC Domain group. To remove the external manager account:
a.
Telnet to the Virtual Connect Manager using an SSH connection such as SSH
[email protected], where xxx is the VC Domain IP address.
b.
Determine the user name of the external manager account, from the VCM command
prompt and enter show external-manager. For this example, assume the user name
returned was xyz.
c.
From the VCM command prompt, disable the account by entering set
external-manager Username=xyz Enabled=false
.
d.
If present, remove the external-manager account by entering the following at the VCM
command prompt:
remove external-manager Username=xyz mactype=Factory-Default
wwnType=Factory-Default serverIdType=Factory-Default
3.
You can resolve this by either modifying the configuration and disabling IGMP No Flood on
the VC Domain that is being added into the VC Domain Group or by modifying the
configuration and enabling IGMP Snooping on the VC Domain Group using VC Domain
Maintenance.
a.
Use one of the following options to disable IGMP No Flood on the VC Domain that is
being added to the VC Domain Group:
•
From the VCM command line—Telnet into the VCM using an SSH connection such
as SSH [email protected], where xxx is the VC Domain IP address.
Enter set igmp NoFlood=false .
•
From the VCM GUI—Clear the Prevent flooding of unregistered multicast traffic check
box.
b.
Use one of the following options to enable IGMP Snooping on the VC Domain Group to
which the VC Domain will be added:
•
From the VCEM GUI:
a.
Start a VC Domain Maintenance operation on any VC Domain in the VC Domain
Group
b.
Enable IGMP Snooping from the VCM CLI by telneting into VCM using an SSH
connection such as SSH [email protected], where xxx is the VC
Domain IP address of the VC Domain under maintenance
c.
Enter set igmp Enabled=true.
•
From the VCM GUI:
a.
Enable IGMP Snooping by clicking the Enable IGMP Snooping check box
b.
Browse to the VCEM GUI and complete VC Domain Maintenance.
4.
Add the VC Domain to the VC Domain Group again.
Managing VC domains with Expanded VLAN capacity enabled
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