ADTRAN NetVanta 2730 Getting Started Guide
Page 27
13. The
Heartbeat Interval
controls how often the two units
communicate. The default is 5000 milliseconds; the
minimum recommended value is 1000 milliseconds. Less
than this may cause unnecessary failovers, especially
when the appliance is under a heavy load.
14. Typically, ADTRAN recommends leaving the
Heartbeat
Interval
,
Election Delay Time (seconds)
, and
Dynamic
Route Hold-Down Time
fields to their default settings.
These fields can be tuned later as necessary for your
specific network environment:
-
The
Failover Trigger Level
sets the number of
heartbeats that can be missed before failing over. By
default, this is set to 5 missed heartbeats.
-
The
Election Delay Time
is the number of seconds
allowed for internal processing between the two units in
the HA pair before one of them takes the primary role.
-
The
Probe Level
sets the interval in seconds between
communication with upstream or downstream systems.
The default is 20 seconds, and the allowed range is 5 to
255 seconds. You can set the Probe IP Address(es) on
the
High Availability
>
Monitoring
screen.
-
The
Dynamic Route Hold-Down Time
setting is used
when a failover occurs on a HA pair that is using either
RIP or OSPF dynamic routing, and it is only displayed
when the
Advanced Routing
option is selected on the
Network
>
Routing
page. When a failover occurs,
Dynamic Route Hold-Down Time
is the number of
seconds the newly-active appliance keeps the dynamic
routes it had previously learned in its route table. During
this time, the newly-active appliance relearns the
dynamic routes in the network. When the
Dynamic
Route Hold-Down Time
duration expires, it deletes the
old routes and implements the new routes it has
learned from RIP or OSPF. The default value is
45 seconds. In large or complex networks, a larger
value may improve network stability during a failover.
15. Select the
Include Certificates/Keys
checkbox to have
the appliances synchronize all certificates and keys.
16. Click
Synchronize Settings
to synchronize the settings
between the Primary and Backup appliances.
17. Click
Synchronize Firmware
if you previously uploaded
new firmware to your Primary unit while the Secondary unit
was offline, and it is now online and ready to upgrade to the
new firmware.
Synchronize Firmware
is typically used
after taking your Secondary appliance offline while you test
a new firmware version on the Primary unit before
upgrading both units to it.
18. Click
Apply
to retain the settings on this screen.
Summary of Contents for NetVanta 2730
Page 1: ......
Page 11: ...Page 6 Verifying System Requirements ...
Page 15: ...Page 10 WWAN PC Card Setup ...
Page 39: ...Page 34 Scenario C L2 Bridge Mode ...
Page 73: ...ADTRAN NetVanta 2730 Getting Started Guide Page 68 Notes ...
Page 74: ......
