Cisco Cisco FastHub 412M 10 100 Repeater
Release Notes for the FastHub 400 10/100 Series 3
Clearing the NVRAM of a Management Hub in a Redundant Stack
For example, in a stack of hubs in which hub 1 is the FastHub 400 model M1 hub and hubs 2, 3,
and 4 are FastHub 400 model unmanaged hubs, the following conditions would apply:
and 4 are FastHub 400 model unmanaged hubs, the following conditions would apply:
— If you remove hub 3 and replace it with a new hub (hub A), the new hub would keep its
default configuration:
Original Stack
New Stack
--------------
------------
Hub 1
Hub 1 (store M1)
Hub 2
Hub 2 (store 2)
(Hub 3) ---> Hub A --->
Hub 3 (store A: default)
Hub 4
Hub 4 (store 4)
— If hub 4 was removed for troubleshooting purposes and later reinstalled in the second
position in the stack, the M1 hub would recognize the serial number of that hub as belonging
to one of its saved configurations and would apply the previously saved hub 4 configuration.
to one of its saved configurations and would apply the previously saved hub 4 configuration.
Original Stack
New Stack
--------------
------------
Hub 1
Hub 1 (store M1)
Hub 2 ---> Hub 4 --->
Hub 2 (store 4: saved)
Hub 3A
Hub 3 (store 2: saved)
(Hub 4)
Hub 4 (store 3A: saved)
Clearing the NVRAM of a Management Hub in a Redundant Stack
To reset the nonvolatile RAM (NVRAM) configuration settings of one or both management hubs in
a redundant stack configuration, note the following guidelines.
a redundant stack configuration, note the following guidelines.
Note
The primary management hub is referred to as the M1 hub, the secondary management hub
as the M2 hub.
•
When a second FastHub 400 model managed hub is added to a stack, the new M2 hub learns the
saved configuration settings for the stack from the M1 hub. If the M1 hub fails, the M2 hub uses
the saved configuration of the M1 hub. [CSCdk91393]
saved configuration settings for the stack from the M1 hub. If the M1 hub fails, the M2 hub uses
the saved configuration of the M1 hub. [CSCdk91393]
— You must power down the stack before resetting either or both management hubs.
To do this, unplug the stacking cable from the management hub(s) you want to clear.
— Connect the hub to a management station
— Power up the hub and access the command-line interface (CLI).
Refer to the online reference FastHub 400 10/100 Series Command Reference for
information about accessing the CLI. See the “Cisco Connection Online” section of this
release note for information about locating this online-only document through the Cisco
web.
information about accessing the CLI. See the “Cisco Connection Online” section of this
release note for information about locating this online-only document through the Cisco
web.
— Use the CLI delete nvram command to reset either or both management hubs to default
values.
Refer to the online reference FastHub 400 10/100 Series Command Reference for more
information about this command.
information about this command.
— Whichever management hub is powered on first becomes the new M1 hub in the stack,
because the hub with the longest up time is by default the M1. If you delete the NVRAM
configuration settings for one management hub and not the other, be sure to power on the
configuration settings for one management hub and not the other, be sure to power on the