There are two ways to determine the HA state of each Acme Packet 3900 in an HA
pair.
1.
If you are in the same physical location as the Acme Packet 3900 you can view
the HA LEDS on the front bottom right. A standby unit lights the STBY LED, while
an active unit lights the ACT LED.
2.
If you are not in the same physical location as the Acme Packet 39004, you can
use the ACLI show health command. The output of this command indicates the
current HA state of the Acme Packet 3900.
Once you have determined that the Acme Packet 3900 due for maintenance is in
standby state, you can continue with the appropriate procedures to replace a part.
If you need to perform maintenance on the active Acme Packet 3900 you need to
manually force the two Acme Packet 3900s to switch HA states. Forcing a switchover
renders the currently active Acme Packet 3900 in Standby state, and the current
standby Acme Packet 3900 will assume all traffic processing and forwarding as the
active system.
Note:
This procedure is only applicable to an HA deployment.
To force a Acme Packet 3900 into the standby HA state:
1.
Use the show health command to verify the State attribute has the value "Active".
SBC1# show health
Media Synchronized true
SIP Synchronized true
MGCP Synchronized true
H248 Synchronized disabled
Config Synchronized true
Collect Synchronized disabled
Radius CDR Synchronized disabled
Rotated CDRs Synchronized disabled
Active Peer Address 0.0.0.0
Redundancy Protocol Process (v3):
State Active
Health 100
Lowest Local Address 169.254.1.1:9090
1 peer(s) on 2 socket(s): SML-STIC-39002: v3, Standby,
health=100, max silence=1050
last received from 169.254.1.2
on wancom1:0
Switchover log:
Jun 25 19:03:02.029: Active to Becoming Standby
Jun 25 19:04:54.684: Standby to Becoming Active
SBC2# show health
Media Synchronized true
SIP Synchronized true
MGCP Synchronized true
Chapter 5
Standby State for HA Nodes
5-4