Chapter 3 Installing the WAVE-594 and WAVE-694
Removing or Replacing a WAVE Appliance
Removing or Replacing a WAVE Appliance
To remove a WAVE appliance from your network, power it down, disconnect the power cords and network cables, and physically remove the chassis from the rack.
The WAVE appliance is in constant communication with the router on your network. When the router notices that the WAVE appliance is no longer responding to it, the router stops sending requests to the
WAVE appliance. This action is transparent to users. If other WAVE appliances are attached to the router, the router continues sending requests to the other WAVE appliances.
When you remove a WAVE appliance, the pages that were cached on that appliance are no longer available to the router or other WAVE appliances. You might see an increase in outgoing web traffic that might have otherwise been fulfilled by the WAVE appliance that you are removing. However, after a time, the router and other WAVE appliances redistribute the load of web traffic.
If you remove the last WAVE appliance from your network, you can also disable WAVE support on the router. However, this action is not necessary because leaving WAVE support enabled when there are no
WAVE appliances attached has no effect on the router’s performance.
To replace a WAVE appliance, remove it from the network, and then install a new WAVE appliance and configure it using the same configuration parameters (IP address and so forth) that you used for the removed WAVE appliance.
Upgrading the WAVE-694 to a New Release
Consider the following guidelines when upgrading the WAVE-694 appliance:
• If you upgrade a WAVE-694 from WAAS Version 5.x to Version 6.x, and the WAVE-694 has the following parameters:
–
–
24 GB RAM
You have used the disk object-cache extend command before the upgrade.
After the upgrade from WAAS Version 5.x to 6.x, you may see the disk_full alarm. (For more information on alarms, see of the WAAS Alarm Book .)
To address the above scenario, follow these steps before beginning the upgrade process: a.
b.
c.
d.
Use the no disk object-cache extend command to disable the disk object cache extend command.
Reload the WAVE-694 in WAAS Version 5.x.
Verify that the device is operational.
Upgrade from WAAS Version 5.x to WAAS Version 6.x.
Cisco Wide Area Virtualization Engine 594 and 694 Hardware Installation Guide
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Upgrading the WAVE-694 to a New Release
Chapter 3 Installing the WAVE-594 and WAVE-694
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Cisco Wide Area Virtualization Engine 594 and 694 Hardware Installation Guide
