Diagnostic Inferences

There are two kinds of Diagnostic Inferences:

By default, both of these diagnostic agents are turned off.

Controller Diagnostic Inferences

To see Controller Diagnostic Inferences, follow these steps:

  1. From the CLI, turn on controller diagnostic inferences with the diag-log command admin controller on. For example:
    Meru01# configure terminal
    Meru01(config)# diag-log
    Meru01(config-diag-log)# admin controller on
  2. From the Web GUI, click Monitor > Diagnostics > Inferences.

You only see controller inferences because that is what you enabled in step 1.

Check the timestamp to see when the event occurred. Old entries are not erased. The description in the last column tells you what controller rule was matched to trigger the entry. There are ten controller inferences that can appear here: DHCP server reached, DHCP server unreachable, Gateway reached, Gateway unreachable, Radius server reached, Radius server unreachable, VLAN gateway reached, VLAN gateway unreachable, IP Address conflict (between wireless clients, between wired and wireless clients, between wireless client and controller IP), un-assignment of client by failure of DHCP IP assignment

Station Diagnostic Inferences

To see Station Diagnostic Inferences, follow these steps:

  1. From the CLI, turn on station diagnostic inferences with the diag-log command admin station on.
    Meru01# configure terminal
    Meru01(config)# diag-log
    Meru01(config-diag-log)# admin station on
  2.  From the Web GUI, click Monitor > Diagnostics > Inferences.
  3. Check the timestamp to see when the event occurred. Old entries are not erased. The description in the last column tells you what station rule was matched to trigger the entry. The station rules currently in effect in System Director are listed in the table below:
    # Station Diagnostic Rule Remarks
     1 MAC Filter ACL Success Station executed MAC filtering ACL authentication
     2 MAC Filter ACL Failure Station exceeded threshold of MAC filtering ACL authentication attempts
     3 MAC Filter Radius Success Station executed MAC filtering Radius authentication
     4 MAC Filter Radius Failure Station exceeded threshold of MAC filtering Radius authentication attempts
     5 Assignment Failure Station exceeded threshold of 802.11 assignment attempts
     6 Wep-key Index Mismatch Monitor Wep-key index mismatched count (Not implemented yet)
     7 Association Success Station executed 802.11 association
     8 Key Exchange Success Station executed 802.1x key exchange
     9 Key Exchange Failure Station exceeded threshold of 802.1x key exchange attempts
     10 MIC Failure Station exceeded threshold of 802.1x MIC attempts
     11 802.1x Radius Success Station executed 802.1x Radius authentication
     12 802.1x Radius Failure Station exceeded threshold of 802.1x Radius authentication attempts
     13 IP Address Update IP address changed from valid to 0, 0 to valid, or valid to valid
     14 Data Decryption Failure Data decryption failure of RX packet occurred; attempt threshold was exceeded.
     15 CP Guest User Success  Station authenticated a Captive-Portal guest
     16 CP Guest User Failure  Station exceeded threshold of Captive-Portal guest authentication attempts
     17 CP Radius User Success  Station authenticated Captive-Portal user using Radius
     18 CP Radius User Failure  Station exceeded threshold of Captive-Portal Radius user authentication attempts
     19 Soft-Handoff  Station executed soft-handoff

     

  4. Examine the details of a particular event by copying a MAC address from this screen and pasting it into the Station Diagnostics window (Monitor > Diagnostics > Station) and then clicking Start Diagnostics.
  5. Scroll down to the bottom of the screen and click Show Buffered Diagnostics.

 You only see station inferences because that is what you enabled in step 1.