Troubleshooting guide

1-21
Cisco Wide Area Application Services Configuration Guide
OL-26579-01
Chapter 1 Configuring Network Settings
Configuring TCP Settings
Step 1 In the Management Interface Settings window, in the Management IP Routes area, click the Create
Management IP Route taskbar button. The Management IP Routes window appears.
Step 2 In the Destination Network Address field, enter the destination network IP address.
Step 3 In the Netmask field, enter the destination host netmask.
Step 4 In the Gateway’s IP Address field, enter the IP address of the gateway interface.
The gateway interface IP address should be in the same network as the device’s management interface.
Step 5 Click Submit.
To configure a static route for management traffic from the CLI, you can use the ip route management
global configuration command.
Configuring a Jumbo MTU
A jumbo MTU can be configured on the following devices: WAE-674/7341/7371,
WAVE-294/594/694/7541/7571/8541, and vWAAS.
If configured, a jumbo MTU applies to all the device interfaces, including logical interfaces with at least
one member physical interface. The MTU for individual interfaces cannot be changed while the jumbo
MTU is configured. If the jumbo MTU is disabled, all interfaces are configured with a MTU of 1500.
To configure a jumbo MTU, follow these steps:
Step 1 From the WAAS Central Manager menu, choose Devices > device-name.
Step 2 Choose Configure > Network > Jumbo MTU.
The Jumbo MTU Settings window appears.
Step 3 In the System Jumbo MTU field, enter the jumbo MTU size in bytes (maximum size varies by platform).
Step 4 Click Submit.
Note If the original and optimized maximum segment sizes are set to their default values and you configure a
jumbo MTU setting, the segment sizes are changed to the jumbo MTU setting minus 68 bytes. If you
have configured custom maximum segment sizes, their values are not changed if you configure a jumbo
MTU. For more information on configuring maximum segment sizes, see the “Modifying the
Acceleration TCP Settings” section on page 1-61.
To configure a jumbo MTU from the CLI, you can use the system jumbomtu global configuration
command.
Configuring TCP Settings
For data transactions and queries between client and servers, the size of windows and buffers is
important, so fine-tuning the TCP stack parameters becomes the key to maximizing cache performance.