Using a Redundant Management Module
December 2008
© 2008 Foundry Networks, Inc.
6 - 5
•
SSH and SSL keys
•
Flash file for the DHCP snooping feature
Each active and standby management module also includes boot code, which is the code a module runs when it
first starts up. The boot code resides in each module’s boot flash. The boot code is synchronized between the two
modules.
Figure 6.1 shows how the files are synchronized between the active module and the standby module.
Figure 6.1Active and Standby Management Module File Synchronization
Manually Switching Over to the Standby Management Module
This section describes how to manually switch the role of active management module from the currently active
module to the standby module.
NOTE:
Starting in software release FSX 05.0.00,
hitless switchover
is supported. An enhancement to the
manual switchover feature
,
a hitless switchover enables a switchover of the active management module to standby
module without interrupting switched traffic. For details, see “Layer 2 Hitless Switchover” on page 6-8.
You can cause the system to switch over to the standby module (and thus make it the active module). To do so,
enter the following command:
S
t
a
nd
b
y M
a
n
a
gement Mod
u
le
Boot code
Fl
as
h code
S
t
a
rt
u
p-config file
Boot code
Fl
as
h code
S
t
a
rt
u
p-config file
Active M
a
n
a
gement Mod
u
le
S
ynchronized
a
t
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t
a
rt
u
p
or
s
witchover
A
S
t
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p-config
a
l
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o
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tom
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tic
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lly
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pd
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ted
with
comm
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o c
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e immedi
a
tely
s
ynchronized
us
ing the CLI
write memory
