Troubleshooting guide

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Cisco Wide Area Application Services Configuration Guide
OL-26579-01
Chapter 1 Configuring Traffic Interception
Using Inline Mode Interception
On WAVE-294/594/694/7541/7571/8541 devices that use Cisco Interface Modules, the Interface Module
ports are configured by default for normal standalone operation. If you want to use the device in inline
mode, you must configure the ports for inline operation. Enabling inline mode configures all ports for
inline operation and converts each pair of ports to an inline group.
On other WAE devices that use the Cisco WAE Inline Network Adapter, the ports on the adapter always
operate in inline mode. You can use this configuration window to enable or disable VLAN ID connection
checking, which is the only setting that appears for such WAE devices.
To enable inline operation and configure general settings, follow these steps:
Step 1 From the WAAS Central Manager menu, choose Devices > device-name. (You cannot enable inline
operation from device groups.)
Step 2 Choose Configure > Interception > Interception Configuration.
Note If you are configuring a device using a WAAS version earlier than 5.0, choose Configure >
Interception > Inline > General Settings to configure inline general settings. The
configuration window looks different but has similar settings.
The Interception Configuration window appears.
Step 3 From the Interception Method drop-down list, choose Inline to enable inline mode. The Interception
Method drop-down list is not shown for devices using WAAS versions earlier than 5.0.
The screen refreshes with the inline settings. (See Figure 1-7.)
Figure 1-7 Inline Interception Settings Window
Step 4
Check the Inline Enable check box to enable inline operation.
The Inline Enable check box is shown only for WAVE devices using WAAS versions earlier than 5.0 and
that have a Cisco Interface Module installed.
Step 5 Check the Vlan ID Connection Check check box to enable VLAN ID connection checking. Uncheck
the check box to disable it. The default setting is enabled.
WAAS uses the VLAN ID to intercept or bridge VLAN traffic on the inline interface for a TCP flow.
The VLAN ID of all packets sent in a particular TCP connection must match; any packets with a different
VLAN ID will be bridged and not optimized. If your system has an asymmetric routing topology, in
which the traffic flow in one direction uses a different VLAN ID than the traffic flow from the other
direction, you may need to disable VLAN ID checking to ensure that the traffic is optimized.