MPX Redundancy
Page 2-9
MPX Redundancy
In order to provide greater reliability, Omni Switch/Router supports two
MPX
s in a
primary/secondary redundant configuration. If the primary
MPX
fails, the secondary
MPX
takes
over without any operator intervention.
♦
Warning
♦
Do
not
install any version of the
MPM
(i.e,
MPM-C
,
MPM 1G
,
MPM II
, or original
MPM
) in a chassis with an
MPX
. Installing an
MPM
in a chassis with an
MPX
can
cause physical damage. If you want to configure an
Omni Switch/Router chassis in a redundant configura-
tion, you
must
use two
MPXs
.
When you have two
MPX
s in one chassis, they must be installed in Slots 1 and 2, and only
one can be active.
MPX
s will assume one of the following roles.
• Primary - The
MPX
that is currently active and processing commands. It is also the
MPX
that
is communicating via Telnet,
FTP
, etc.
• Secondary - An
MPX
that is currently not the primary. It has sufficient software to commu-
nicate with the primary
MPX
. (For full redundancy, the secondary
MPX
should also have
the same software version as the primary and its configuration should be in sync with the
primary.) In this state, it is capable at any time of assuming the primary role.
The
LED
s on each
MPX
reflect the same status with the exception that the primary’s
PRI
LED
is
on whereas the secondary’s
SEC
LED
is on. Also, the secondary
MPX
’s
OK2
LED
will not flash
amber during board transitions. See
Omni Switch/Router Management Processor Module
(MPX) Status LEDs
on page 2-2 for locations of the
LEDs
.
♦
Important Note
♦
To support redundancy, your
MPX
must
be Revision
A14 or higher.
Change-Over Procedure
The secondary
MPX
continuously monitors the primary
MPX
. This monitoring serves two
purposes: 1) to notify the secondary
MPX
that the primary is alive and processing, and 2) to
update the configuration and thus keep the two
MPX
s in sync. If the secondary
MPX
detects
that the primary is no longer operational, it will begin to take over as primary. When a
secondary
MPX
becomes primary it resets all the other modules in the chassis and performs a
primary
MPX
initialization.
There are four states for an
MPX
configuration. You can view the current
MPX
state through
the
slot
command. These states are described in the table below. Note that for a
primary/secondary configuration to be in a “redundant” state, the relationship between the
two
MPX
s must meet the conditions shown in the table.
Содержание Omni Switch/Router
Страница 1: ...Part No 060166 10 Rev C March 2005 Omni Switch Router User Manual Release 4 5 www alcatel com ...
Страница 4: ...page iv ...
Страница 110: ...WAN Modules Page 3 40 ...
Страница 156: ...UI Table Filtering Using Search and Filter Commands Page 4 46 ...
Страница 164: ...Using ZMODEM Page 5 8 ...
Страница 186: ...Displaying and Setting the Swap State Page 6 22 ...
Страница 202: ...Creating a New File System Page 7 16 ...
Страница 270: ...Displaying Secure Access Entries in the MPM Log Page 10 14 ...
Страница 430: ...OmniChannel Page 15 16 ...
Страница 496: ...Configuring Source Route to Transparent Bridging Page 17 48 ...
Страница 542: ...Dissimilar LAN Switching Capabilities Page 18 46 ...
Страница 646: ...Application Example DHCP Policies Page 20 30 ...
Страница 660: ...GMAP Page 21 14 ...
Страница 710: ...Viewing the Virtual Interface of Multicast VLANs Page 23 16 ...
Страница 722: ...Application Example 5 Page 24 12 ...
Страница 788: ...Viewing UDP Relay Statistics Page 26 24 ...
Страница 872: ...The WAN Port Software Menu Page 28 46 ...
Страница 960: ...Deleting a PPP Entity Page 30 22 ...
Страница 978: ...Displaying Link Status Page 31 18 ...
Страница 988: ...Displaying ISDN Configuration Entry Status Page 32 10 ...
Страница 1024: ...Backup Services Commands Page 34 14 ...
Страница 1062: ...Diagnostic Test Cable Schematics Page 36 24 ...
Страница 1072: ...Configuring a Switch with an MPX Page A 10 ...
Страница 1086: ...Page B 14 ...
Страница 1100: ...Page I 14 Index ...