Can we use the two NICs in MCS for dual-homing for redundancy?
I would like to find out the purpose of having two NICs in MCS, is it for dual-homing to two switches for redundancy? Is Yes, does it mean that the two NICs share the same IP Address and one is in active mode and the other in passive mode?
If no, what is the real purpose of having two NICs?
In addition, as reported by those who tested the teaming, there are some design considerations:
- If you connect the NICs to two spearate switches, you must span the VLAN between the two switches as teaming requires the NICs to be in the same L2 domain. This has considerations as to best-practices (spanning vlans between switches) as well as speed of convergence in event of failure (STP tweaking)
- Beware if you are doing port security - the same MAC and IP address can appear on two different switches
- Redundancy should be addressed to make sure that a link failure does not put each NIC in a separate broadcast domain (HP/Compaq recommendation as well).
Check the app note as NIC teaming is not supported on all servers shipped with dual nics. The dual nics are a result of using industry-standard platforms. Support came after testing and documentation.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.