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Chapter 10: Configurations
147
Tiered Configurations
Standard Tiered Configurations
Common Guidelines for Tiering Configuration
Only Paragon I with hardware version HW3 (running Paragon II code)
or Paragon II Main Unit can serve as Base Units (first tier).
The version of Base Unit(s), both hardware and firmware, must
always be later than or at least equal to the version of other tiered
devices.
A maximum of three tiers, including the Base Unit, is permitted.
Devices that are not Paragon switches but come with two or more
channel ports, such as Raritan MasterConsole, CompuSwitch, Z-CIM
or P2ZCIM, and IBM BladeCenter chassis are treated as tiered
devices. These devices cannot act as Base Units in a Paragon II
system and can be connected only to a Base Unit or to a second-tier
Paragon switch. Do NOT connect a tiered device to the third-tier
Paragon switch or it will be regarded as the fourth tier, which
Paragon does not support.
Tip: The easiest way to determine whether the hardware version of your
Paragon I unit is HW3 is to check the number of its stacking ports on the
rear side. If there is only one stacking port, the hardware version is HW3.
Guidelines for Single Base Configuration
A single base configuration could be two-tier or three-tier configuration. It
is composed of one Paragon Main Unit, serving as the Base Unit, and
second-tier or even third-tier device(s).
Initialization
After all devices have been connected, turn on the devices from
UPPER tier to lower tier. For example, turn on the second-tier
device(s) first and then the Base Unit in a two-tier configuration.
After initialization, each tiered device has an updated database.
Guidelines for changing connections of tiered devices:
Example A: Relocating a higher-tier device (refer to dotted line)
1. Disconnect some or all of the user ports on the third-tier unit
(UMT-3A) that connect to the channel ports of the second-tier unit
(UMT-2A) and re-connect the user ports to the channel ports of
another second-tier unit (UMT-2B).
2. Recycle the power of all impacted devices. This is recommended to
build a clean database for Paragon switches. Sequence of recycling
power is from the HIGHEST tier (third tier) to the Base Unit. In our
example: UMT-3A --> UMT-2A --> UMT-2B --> UMT-1.