Cisco WAAS Troubleshooting Guide for Release 4.1.3 and Later -- Troubleshooting WAAS Express

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|[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later|Main Article]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later -- Understanding  the WAAS Architecture and Traffic Flow|Understanding the WAAS Architecture and Traffic  Flow]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later -- Preliminary  WAAS Troubleshooting|Preliminary WAAS Troubleshooting]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Optimization|Troubleshooting Optimization]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Application Acceleration|Troubleshooting  Application Acceleration]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the CIFS AO|Troubleshooting the CIFS AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the HTTP AO|Troubleshooting the HTTP AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the EPM AO|Troubleshooting the EPM AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the MAPI AO|Troubleshooting the MAPI AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the NFS AO|Troubleshooting the NFS AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the SSL AO|Troubleshooting the SSL AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the Video AO|Troubleshooting the Video AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the Generic AO|Troubleshooting the Generic AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Overload Conditions|Troubleshooting Overload Conditions]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting WCCP|Troubleshooting WCCP]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Disk and Hardware Problems|Troubleshooting  Disk and Hardware Problems]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3  and Later --  Troubleshooting Serial Inline Clusters|Troubleshooting Serial Inline Clusters]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3  and Later --  Troubleshooting vWAAS|Troubleshooting vWAAS]]<br>[[Cisco WAAS Troubleshooting Guide for Release    4.1.3  and Later --    Troubleshooting WAAS Express|Troubleshooting WAAS Express]]<br>
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|[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later|Main Article]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later -- Understanding  the WAAS Architecture and Traffic Flow|Understanding the WAAS Architecture and Traffic  Flow]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later -- Preliminary  WAAS Troubleshooting|Preliminary WAAS Troubleshooting]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Optimization|Troubleshooting Optimization]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Application Acceleration|Troubleshooting  Application Acceleration]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the CIFS AO|Troubleshooting the CIFS AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the HTTP AO|Troubleshooting the HTTP AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the EPM AO|Troubleshooting the EPM AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the MAPI AO|Troubleshooting the MAPI AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the NFS AO|Troubleshooting the NFS AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the SSL AO|Troubleshooting the SSL AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the Video AO|Troubleshooting the Video AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting the Generic AO|Troubleshooting the Generic AO]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Overload Conditions|Troubleshooting Overload Conditions]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting WCCP|Troubleshooting WCCP]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3 and Later --  Troubleshooting Disk and Hardware Problems|Troubleshooting  Disk and Hardware Problems]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3  and Later --  Troubleshooting Serial Inline Clusters|Troubleshooting Serial Inline Clusters]]<br>[[Cisco WAAS Troubleshooting Guide for Release  4.1.3  and Later --  Troubleshooting vWAAS|Troubleshooting vWAAS]]<br>[[Cisco WAAS Troubleshooting Guide for Release    4.1.3  and Later --    Troubleshooting WAAS Express|Troubleshooting WAAS Express]]<br>[[Cisco_WAAS_Troubleshooting_Guide_for_Release_4.1.3_and_Later_--_Troubleshooting_NAM_Integration|Troubleshooting NAM Integration]]<br>
|}
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Revision as of 00:42, 20 May 2011

This article describes how to troubleshoot WAAS Express operation.


Guide Contents
Main Article
Understanding the WAAS Architecture and Traffic Flow
Preliminary WAAS Troubleshooting
Troubleshooting Optimization
Troubleshooting Application Acceleration
Troubleshooting the CIFS AO
Troubleshooting the HTTP AO
Troubleshooting the EPM AO
Troubleshooting the MAPI AO
Troubleshooting the NFS AO
Troubleshooting the SSL AO
Troubleshooting the Video AO
Troubleshooting the Generic AO
Troubleshooting Overload Conditions
Troubleshooting WCCP
Troubleshooting Disk and Hardware Problems
Troubleshooting Serial Inline Clusters
Troubleshooting vWAAS
Troubleshooting WAAS Express
Troubleshooting NAM Integration

Contents


WAAS Express is WAAS functionality built into IOS running on a device such as a router. The WAAS Central Manager can manage a WAAS Express device along with other WAAS devices in the WAAS network. This article describes how to troubleshoot WAAS Express device operation.

NOTE: WAAS Express Central Manager support was introduced in WAAS version 4.3.1. This section is not applicable to earlier WAAS versions.


Verifying WAAS Express Image Version

To verify the WAAS Express image version use the show waas status command on the WAAS Express router. To view the WAAS Express image version from the WAAS Central Manager, choose My WAN > Manage Devices.

waas-express# show waas status

IOS Version: 15.1(20101018:232707)       <----- IOS version
WAAS Express Version: 1.1.0              <----- WAAS Express version
. . .

Verifying WAAS Express License

The WAAS Express license comes in two varieties: evaluation license (valid for 12 years) and permanent license. Use the show waas status command on the WAAS Express device to display the license information.

waas-express# show waas status

IOS Version: 15.1(20101018:232707)
WAAS Express Version: 1.1.0
. . . 

WAAS Feature License
  License Type:                           Evaluation          <----- Indicates an evaluation license
  Evaluation total period:                625 weeks 0  day 
  Evaluation period left:                 622 weeks 6  days

Verifying WAAS Enabled Interfaces

Use the show waas status command on the WAAS Express device to list the set of interfaces on which WAAS is enabled. This command also displays the kind of optimization supported by the device. Some of the WAAS Express router models do not support DRE.

waas-express# show waas status

IOS Version: 15.1(20101018:232707)
WAAS Express Version: 1.1.0
WAAS Enabled Interface        Policy Map
GigabitEthernet0/1            waas_global        <----- Interfaces on which optimization is enabled
GigabitEthernet0/2            waas_global
Virtual-TokenRing1            waas_global
Virtual-TokenRing2            waas_global
GigabitEthernet0/0            waas_global
Virtual-TokenRing10           waas_global
WAAS Feature License
   License Type:                           Evaluation
   Evaluation total period:                625 weeks 0  day
   Evaluation period left:                 622 weeks 6  days
DRE Status                        : Enabled                    <----- Indicates DRE is supported
LZ Status                         : Enabled + Entropy
Maximum Flows                     : 50                         <----- Number of optimized connections supported
Total Active connections          : 0                          <----- Total number of connections active
Total optimized connections       : 0                          <----- Total number of optimized connections

Verifying WAAS Optimized Connections

On the WAAS Express device, use the show waas connection command to list the set of optimized connections. Pass-through connections are not included.

waas-express#  show waas  status
 ConnID     Source IP:Port         Dest IP:Port           PeerID            Accel
 1999       64.103.255.217 :59211  192.168.4.2    :1742   0021.5e57.a768    TLD     <----- TFO, LZ and DRE are applied
 1910       64.103.255.217 :56860  192.168.4.2    :61693  0021.5e57.a768    TLD
 1865       64.103.255.217 :59206  192.168.4.2    :23253  0021.5e57.a768    TLD

To view similar information from the Central Manager, choose the WAAS Express device, then choose Monitor > Optimization > Connections Statistics to see the Connections Summary Table.

Figure 1. Connections Summary Table
Waast-wexpressconnsummary.png

Verifying WAAS Optimized Data

On the WAAS Express device, use the show waas statistics application command to list the optimized data classified into each application. The WAAS Express device does not show pass-through data. This data is used to generate the TCP related charts in the WAAS Central Manager.

waas-express# show waas statistics application

 Number of applications :        1
 Application:     waas-default
 TCP Data Volumes
 Connection Type     Inbound                             Outbound
 Opt TCP Plus        53001765483                         41674120
 Orig TCP Plus       0                                87948683030
 Opt TCP Only        1165                                     863
 Orig TCP Only       60                                         0
 Internal Client     0                                          0
 Internal Server     0                                          0

 TCP Connection Counts
 Connection Type     Active               Completed
 Opt TCP Plus        50                         126
 Opt TCP Only        0                           71
 Internal Client     0                            0
 Internal Server     0                            0

 Pass Through Connection Counts
 Connection Type     Completed
 PT Asymmetric       0
 PT Capabilities     0
 PT Intermediate     0
 PT_Other            0
 Connection Reset:   0
 Cleared connections 0

Verifying WAAS Express Alarms

On the WAAS Express device, use the show waas alarms command to list the alarms that are present in the device and their status.

waas-express# show waas alarms
WAAS status:        enabled
Alarms
   Connection limit exceeded:              on      <----- on indicates this alarm is active. off indicates inactive
   Too many peers discovered:              off
   WAAS license expired:                   off
   WAAS license revoked:                   off
   WAAS license deleted:                   off
   High CPU:                               off

To view alarms for all devices from the Central Manager, choose My WAN > Alerts. In addition to the alarms listed above, an alarm is raised if the clocks of the WAAS Express and WAAS Central Manager devices are not synchronized.

Verifying WAAS Express Peers

On the WAAS Express device, use the show waas statistics peer command to list the peer devices of the WAAS Express device.

waas-express# show waas statistics peer
 Number of Peers :   1
 Peer:               0021.5e57.a768
 TCP Data Volumes
 Connection Type     Inbound                             Outbound
 Opt TCP Plus        597068158                            5212151
 Orig TCP Plus       0                                 6867128187
 Opt TCP Only        0                                          0
 Orig TCP Only       0                                          0
 Internal Client     0                                          0
 Internal Server     0                                          0

 TCP Connection Counts
 Connection Type     Active               Completed
 Opt TCP Plus        50                           0
 Opt TCP Only        0                            0
 Internal Client     0                            0
 Internal Server     0                            0

 Pass Through Connection Counts
 Connection Type     Completed
 PT Asymmetric       0
 PT Capabilities     0
 PT Intermediate     0
 PT_Other            0
 Connection Reset:   0
 Cleared connections 0

To view similar information from the Central Manager, choose Monitor > Topology.

Offline Alarms

The WAAS Express device may go to an offline state in the Central Manager because of the following issues:

  • Central Manager does not have WAAS Express device credentials.
Credentials are not configured for this WAAS Express device in the Central Manager. The WAAS Central Manager needs the WAAS Express username and password to communicate with the WAAS Express device. You can configure credentials in the Central Manager by choosing My WAN (or a WAAS Express device or device group) > Admin > WAAS Express Credentials.
  • Authentication failed while communicating with WAAS Express device.
The Central Manager is not able to communicate with the WAAS Express because wrong credentials are configured. You can configure credentials in the Central Manager by choosing My WAN (or a WAAS Express device or device group) > Admin > WAAS Express Credentials.
  • SSL Handshake failed while communicating with WAAS Express devcie.
The WAAS Express device certificate is changed and the same certificate is not imported for this device in the Central Manager. To reimport the WAAS Express device certificate, choose the WAAS Express device, then choose Admin > Certificate.
  • No route to WAAS Express device.
The Central Manager is not able to reach the WAAS Express Device. Configure the correct WAAS Express management IP address by choosing the WAAS Express device, then choosing DeviceName > Activation.
  • Connection is refused by WAAS Express device.
The HTTPS server port configured on the WAAS Express device is not the same as the port shown in the Central Manager DeviceName > Activation page. Configure the correct WAAS Express HTTPS server port in this page.
  • WAAS support is not available on WAAS Express device.
The WAAS Express device is downgraded to an IOS image version with no WAAS support. Install an IOS image with WAAS support.
  • Connection timed out while communicating with WAAS Express device.
The WAAS Express device is taking more than 30 seconds to respond to the Central Manager. It could be because the WAAS Express device is overloaded or the network is slow.
  • License is expired on WAAS Express device.
The Evaluation license on the WAAS Express device is expired. Install a Permanent license by using the WAAS Express license install command.
  • SSL connection closed incorrectly while communicating with WAAS Express device.
The WAAS Express device and Central Manager are using the cipher rc4-128-md5 for SSL communication. Sometimes the Central Manager fails to decrypt the SSL data sent by the WAAS Express. Configure the ciphers 3des-ede-cbc-sha, des-cbc-sha, and rc4-128 by using the WAAS Express command ip http secure-ciphersuite 3des-ede-cbc-sha des-cbc-sha rc4-128-sha.
  • Failed to check the status of WAAS Express device.
The Central Manager is not receiving configuration status from the WAAS Express device. Contact Cisco TAC for assistance troubleshooting.
  • Management Status is offline.
If you see this error message, contact Cisco TAC for assistance troubleshooting.

Verifying WAAS Express HTTPS Configuration

To verify the HTTPS server configuration on the WAAS Express device, use the show ip http server secure status command.

waas-express# show ip http server secure status

HTTP secure server status: Enabled
HTTP secure server port: 443
HTTP secure server ciphersuite: 3des-ede-cbc-sha des-cbc-sha rc4-128-sha
HTTP secure server client authentication: Disabled
HTTP secure server trustpoint: local
HTTP secure server active session modules: ALL

Capturing Packets on the Router

To debug connection problems, you may need to capture packets on the WAAS Express device.

For details on IOS packet capture, see the document Embedded Packet Capture.

You should define two capture points: one on the LAN side interface and one on the WAN side interface.

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