Troubleshooting guide

Chapter 9 Troubleshooting Active Network Management Fail-over in High Availability Applications
Advanced Technical Reference Guide 4.1 • June 2000 104
Interface Fail tests - Primary-up mode
# Test Description Test Configuration Expected result Remarks
1. Disconnect 1 interface on
the ACTIVE machines and
reconnect it after a
successful fail-over.
Cluster machines in
primary-up High
Availability (HA)
mode.
The secondary Machine will
become ACTIVE and The primary
machine Dead.
When the interface is reconnected
the primary machine should
become active again.
Check that normal network traffic is
restored.
This should be
tested while
connections are
being opened
between the
external and
internal
segments.
2. Disconnect 1 interface all
cluster machines at the
same time
Cluster machines in
primary-up High
Availability (HA)
mode.
No change should occur in any of
the tested machines
3. Disconnect all the
interfaces of the ACTIVE
machine at the same time
and then reconnect them
Cluster machines in
primary-up High
Availability (HA)
mode.
The secondary machine should
become ACTIVE and filter
connections, when the primary
machine is reconnected the
secondary machine should
immediately change state to
STAND-BY
Check that no
connections are
lost
4. Disconnect 1interface from
the primary machine, then
1interface from the
secondary, plug back
(primary first) and try the
opposite.
Cluster machines in
primary-up High
Availability (HA)
mode.
The Active machine should be the
one with the most interfaces and
lowest serial number at any given
moment.
Interface Fail tests - Active-up mode
# Test Description Test Configuration Expected result Remarks
1. Disconnect \1 interface on
the ACTIVE machines and
reconnect it after a
successful fail-over.
Cluster machines in
Active-up High
Availability (HA)
mode.
The secondary Machine will
become ACTIVE and the primary
machine Dead.
When the interface is reconnected
the primary machine should
change its state to STAND-BY.
Check that normal network traffic is
restored.
This should be
tested while
connections are
being opened
between the
external and
internal
segments.
2. Disconnect 1 interface in
all cluster machines at the
same time
Cluster machines in
Active-up High
Availability (HA)
mode.
No change should occur in any of
the tested machines
3. Disconnect all the
interfaces of the ACTIVE
machine at the same time
and then reconnect them
Cluster machines in
Active-up High
Availability (HA)
mode.
The secondary machine should
become ACTIVE and filter
connections, when the primary
machine is reconnected the
secondary machine should remain
ACTIVE and the primary change
statetoSTAND-BY.
Check that no
connections are
lost