Enterasys Vertical Horizon VH-2402S2, Configuration Manual

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Management Overview 3
Closed-Loop Stack
The VH-2402S2 switches can be stacked together by installing optional
Stacking Modules. The VH-STACK2 Stacking Module allows you to
configure a closed-loop architecture that provides fault-tolerant operation
of the stack. If a switch or stacking module fails, or if a stacking cable is
disconnected, the entire stack will reboot and will subsequently resume
normal operation and managment via the redundant stacking cable
(closed loop). Also, any changes to the stack including powering down of
a unit or the insertion of a unit will cause the stack to reboot.
Required Connections
Console Port (Out-of-Band) Connections
Attach a VT100 compatible terminal or a PC running a terminal emulation
program to the serial port on the Management Module. Use the null-
modem cable provided with this package, or use a null-modem
connection that is compatible with the console port pin assignments
shown in Appendix A of the VH-2402S2
Hardware Installation Guide.
When attaching to a PC, set terminal emulation type to VT100, specify the
port used by your PC (i.e., COM 1~4), and then set communications to 8
data bits, 1 stop bit, no parity, and 19200 bps (for initial configuration).
Also be sure to set flow control to “none.” (Refer to “Configuring the Serial
Port” on page 21 for a complete description of configuration options.)
In-Band Connections
Prior to accessing the Management Module via a network connection, you
must first configure it with a valid IP address, subnet mask, and default
gateway using an out-of-band connection or the BootP protocol.
NOTE: A VH-STACK2 Stacking Module must be installed with
the master Management Module in Unit 1 only. If backup man-
agement is used in conjunction with the closed-loop feature,
the backup Management Module must be installed in Unit 2.
NOTE: The stack will re-number itself if a unit in the closed-
loop stack fails.