FAQ and Troubleshooting Guide for the CiscoWorks Wireless LAN Solution Engine, 2.5
Fault Descriptions
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Fault Descriptions

Table Of Contents

Fault Descriptions

Access Point Faults

WLSE Fault

AAA Server Faults

Switch Faults

Router Fault


Fault Descriptions


This section provides the following information on the faults displayed in Faults > Display Faults. The following information is provided:

Fault—The fault as it appears in the Display Faults table.

Explanation—An explanation as to why the fault occurred.

Related Setting—The threshold or policy you assigned to devices under Faults > Manage Fault Settings, when applicable.

Recommended Action—An action that can be taken to clear the displayed fault.

Fault tables are provided for each device type:

Access Point Faults

WLSE Fault

AAA Server Faults

Switch Faults

Router Fault

Access Point Faults

Table 2-1 Access Point Faults 

Fault Description
Type
Explanation
Related Setting
Recommended Action

AP is in a Degraded state number associated clients

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When this fault is cleared, the following message displays: AP is in OK state.

Manage Fault Settings > Thresholds > Access Point > Associated Clients

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

AP is in an Overloaded state number associated clients

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When this fault is cleared, the following message displays: AP is in OK state.

Manage Fault Settings > Thresholds > Access Point > Associated Clients

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

AP is not registered with any WDS

IOS

The managed IOS access point is not registered with any WDS.

For Radio Manager functionality to work, all IOS access points must register with a WDS. If an access point is not registered, it will be excluded from all the Radio Manager procedures, which will provide incorrect results.

Manage Fault Settings > Access Point > Thresholds > Registration Error

Verify that the WLCCP credentials for wireless domain services (WDS) are configured correctly.

For more information, see the managing devices information in the online help or the User Guide for the CiscoWorks Wireless LAN Solution Engine, Release 2.5.

Broadcast Key Rotation is disabled

Non-IOS and IOS

The broadcast key rotation has been disabled.

When this fault is cleared, the following message displays: Broadcast Key Rotation is enabled.

Manage Fault Settings > Security Policies > Key Rotation per VLAN

Log in to the access point and enable the broadcast key rotation interval.

Broadcast SSID is disabled

Non-IOS and IOS

Broadcast SSID has been disabled.

When this fault is cleared, the following message displays: Broadcast SSID is enabled

Manage Fault Settings > Security Policies > Broadcast SSID Disabled

Log in to the access point and enable SSID for broadcast mode.

Client association rate is Degraded number per minute

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When this fault is cleared, the following message displays: Client association rate is OK.

Manage Fault Settings > Thresholds > Access Point > Association Rate

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Client association rate is Overloaded number per minute

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When this fault is cleared, the following message displays: Client association rate is OK.

Manage Fault Settings > Thresholds > Access Point > Association Rate

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Client authentication error rate is Degraded number per minute

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When this fault is cleared, the following message displays: Client association error rate is OK.

Manage Fault Settings > Thresholds > Access Point > Authentication Error Rate

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Client authentication error rate is Overloaded number per minute

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When this fault is cleared, the following message displays: Client association error rate is OK.

Manage Fault Settings > Thresholds > Access Point > Authentication Error Rate

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Device state is rogue access point

IOS

The WLSE detected a rogue access point. (This is an access point that is not being managed and is unknown to the WLSE.)

Manage Network-Wide Settings > Rogue AP Detection

Use Location Manager (select Radio Manager > Location Manager) to locate the rogue access point.

Device was not reachable via SNMP

Non-IOS and IOS

The SNMP Agent could be down.

When this fault is cleared, the following message displays: Device was reachable via SNMP.

Manage Fault Settings > Thresholds > Access Point > SNMP Reachable

Make sure SNMP is enabled on the device and that the agent is not down.

Take a MIB walk of the device to make sure sysup time is returning 0, which indicates Device is reachable.

The SNMP community string in the access point has been changed, and then a discovery job is run.

Not applicable.

Change the SNMP community string on the WLSE to match the new community string on the access point, then run discovery again.

Duplicate IP is found

Non-IOS and IOS

WLSE discovery detects a second device with the same IP address in the network.

When this fault is cleared, the following message displays: Duplicate IP is valid.

There is no setting associated with this fault.

Do one of the following:

Assign a new IP address to the device.

If you have substituted a device for the device with the same IP, and want to continue to use that IP, then delete the original device, and run discovery again.

When changing the MAC address of the FastEthernet interface to the MAC address of a radio interface, the WLSE might detect the access point as a duplicate device. This is because during discovery, the uniqueness of the device is based on its FastEthernet MAC address.

Delete the device, and run discovery again.

EAP is disabled

Non-IOS and IOS

The EAP has been disabled.

When this fault is cleared, the following message displays: EAP is enabled

Manage Fault Settings > Security Policies > EAP Enforced

Log in to the access point and enable the Network EAP and Open authentication.

EAP per SSID is disabled

Non-IOS and IOS

EAP per SSID has been disabled on the access point.

When this fault is cleared, the following message displays: EAP per SSID is enabled

Manage Fault Settings > Security Policies > EAP Per SSID Enforced

Log in to the access point and enable the Network EAP and Open authentication per SSID.

Ethernet bandwidth utilization is Degraded (utilization %)

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When this fault is cleared, the following message displays: Ethernet bandwidth utilization is OK.

Manage Fault Settings > Thresholds > Access Point > Ethernet Port Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Ethernet bandwidth utilization is Overloaded (utilization %)

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When this fault is cleared, the following message displays: Ethernet bandwidth utilization is OK.

Manage Fault Settings > Thresholds > Access Point > Ethernet Port Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Firmware version policy violation (version number)

Non-IOS and IOS

The wrong version number for policy checking has been entered.

When this fault is cleared, the following message displays: Firmware version is valid.

Manage Fault Settings > Security Policies > Firmware Version

Make sure that the firmware version that is entered in the policy setting matches the firmware version on the access point.

The access point is running an unauthorized firmware version.

When this fault is cleared, the following message displays: Firmware version is valid.

Make sure that you have entered authorized versions in the policy setting.

Update the firmware on the access point to an authorized version.

HotStandBy is active

Non-IOS and IOS

The access point that is configured for hot standby has become active.

The following conditions could cause the hot standby access point to become active: the primary access point is down, the Ethernet port is down, or the Radio port is down.

When this fault is cleared, the following message displays: HotStandBy is disabled.

Manage Fault Settings > Security Policies > HotStandBy Status

For non-IOS access points:

1. Check the primary access point, the Ethernet port, or the Radio port to see why the hot standby access point has been activated.

2. Correct the condition. For example, if the Radio Port on the formerly active access point was in a disabled state, then enable it using the access point GUI.

3. Launch the GUI for access point that is currently in Active Takeover mode.

4. Select the Hot Standby section and click Start Hot Standby mode to reconfigure the access point to Hot Standby mode.

       

For IOS access points:

1. Check the primary access point, the Ethernet port, or the Radio port to see why the hot standby access point has been activated.

2. Correct the condition. For example, if the Radio Port on the formerly active access point was in a disabled state, then enable it using the access point GUI.

3. Launch the GUI for access point that is currently in Active Takeover mode.

4. Select Hot Standby, click Disabled , then click Apply.

5. Click Enabled, then enter the Radio MAC address of Monitored Radio Port, leave the Polling interval and Timeout for Each Polling fields blank,.

6. Click Apply to reconfigure the access point to Hot Standby mode.

HTTP access is enabled

Non-IOS

HTTP has been enabled on the access point.

When this fault is cleared, the following message displays: HTTP access is disabled.

Manage Fault Settings > Security Policies > HTTP Disabled

Log in to the access point and disable HTTP access.

HTTP access without login is enabled

Non-IOS

The allowBrowseWithoutLogin setting on the access point is set.

When this fault is cleared, the following message displays: HTTP access without login is disabled.

Manage Fault Settings > Security Policies > HTTP Authentication

Log in to the access point and disable the allowBrowseWithoutLogin setting.

Non 802.11 interference detected

IOS

The WLSE detected a non-802.11 interference.

Manage Network-Wide Settings > Interference Detection

Use AP Radio Scan (select Radio Manager > AP Radio Scan) to locate the rogue access point.

Packet Error is in Degraded state (error rate %)

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When this fault is cleared, the following message displays: Packet Error is in OK state.

Manage Fault Settings > Thresholds > Access Point > RF Port Packet Errors

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Packet Error is in is in Overloaded state (error rate %)

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When this fault is cleared, the following message displays: Packet Error is in OK state.

Manage Fault Settings > Thresholds > Access Point > RF Port Packet Errors

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Port is administratively set to down

Non-IOS and IOS

The port has been set to Down by the administrator.

When this fault is cleared, the following message displays: Port is up

This fault is not generated based on a threshold or policy violation.

There is no action necessary; the port has been deliberately shut down.

Port is down

Non-IOS and IOS

The port is operationally down.

When this fault is cleared, the following message displays: Port is up

This fault is not generated based on a threshold or policy violation.

Check the device to determine why the port is down.

If you have added or removed an interface from an access point, the WLSE might generate an erronous fault. S ee What are the results of adding or removing an interface from an access point?.

PSPF is disabled

Non-IOS

The PSPF port has been disabled.

PSPF (Publicly Secure Packet Forwarding) is a feature that prevents client devices associated to a bridge or access point from inadvertently sharing files with other client devices on the wireless network.

When the fault is cleared, the following message displays: The PSPF is enabled.

Manage Fault Settings > Security Policies > PSPF Enabled

Log in to the access point and enable the PSPF setting.

Retry Count rate is Degraded number per minute

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When the fault is cleared, the following message displays: Retry Count rate is OK

Manage Fault Settings > Thresholds > Access Point > Max Retry Counts

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Retry Count rate is Overloaded number per minute

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When the fault is cleared, the following message displays: Retry Count rate is OK

Manage Fault Settings > Thresholds > Access Point > Max Retry Counts

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

RF bandwidth utilization is Degraded (utilization %)

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When the fault is cleared, the following message displays: RF bandwidth utilization is OK

Manage Fault Settings > Thresholds > Access Point > RF Port Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

RF bandwidth utilization is Overloaded (utilization %)

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When the fault is cleared, the following message displays: RF bandwidth utilization is OK

Manage Fault Settings > Thresholds > Access Point > RF Port Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

SNMP query received authorization error response

Non-IOS

The access point's user community strings do not have Admin, Ident, Firmware, SNMP privileges. The WLSE might not be able to access some SNMP information from the access point that requires these privileges.

When the fault is cleared, the following message displays: Device was reachable via SNMP.

Manage Fault Settings > Thresholds > Access Point > SNMP Reachable

Make sure the SNMP community string set on the WLSE (Devices > Discover > Device Credentials > SNMP Communities) is the same as the string set on the access point (Setup > Security > User Information).

SSID policy violation SSID assigned to the access point

Non-IOS and IOS

The SSID entered in the WLSE is different from the SSID assigned to the access point.

When the fault is cleared, the following message displays: SSID is valid.

Manage Fault Settings > Security Policies > SSID

If you configured different SSIDs among managed access points, you need to enter all of the SSIDs, or this fault will be generated for access points whose SSIDs are not listed.

The access point is configured with an unauthorized SSID.

Make sure that you have entered authorized SSIDs in the SSID policy.

Change the SSID on the access point to an authorized SSID.

IOS

The SSID policy for an IOS access point is enabled, but the "guest mode" is disabled. This causes the access point to send an SSID made up of all zeros and equivalent to the length of the first configured SSID.

Manage Fault Settings > Security Policies > SSID

Enable the access point's guest mode.

Telnet access is enabled

Non-IOS

Telnet has been enabled on the access point.

When this fault has been cleared, the following message displays: Telnet access is disabled

Manage Fault Settings > Security Policies > Telnet Disabled

Log in to the access point and disable the Telnet access setting.

User capabilities are not enforced

Non-IOS

The enableUserMgr setting is not set on the access point.

When this fault has been cleared, the following message displays: User capabilities are enforced.

Manage Fault Settings > Security Policies > User Manager Enforced

Log in to the access point and enable the User Mgr setting.

Vlan WEP key length policy violation

Non-IOS and IOS

The WEP key length per VLAN setting has been violated.

When this fault has been cleared, the following message displays: Vlan WEP key length is ok.

Manage Fault Settings > Security Policies > WEP Encryption per Vlan

Make sure the WEP key length selected in the policy setting matches the access point settings.

WDS appears down.

IOS

The WLSE failed to receive "keep active" messages from the WDS. This happens when the WDS is down or when the network is down.

Manage Fault Settings > Thresholds > WDS > WLSE-WDS Link Status

Check the network connectivity, the WDS status, and the WLSE and WDS credentials.

WEP Error is in Degraded state (error rate %)

Non-IOS and IOS

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: WEP Error is in OK state

Manage Fault Settings > Thresholds > Access Point > RF Port WEP Errors

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

WEP Error is in Overloaded state (error rate %)

Non-IOS and IOS

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: WEP Error is in OK state

Manage Fault Settings > Thresholds > Access Point > RF Port WEP Errors

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

WEP is disabled

Non-IOS and IOS

WEP has been disabled.

When this fault has been cleared, the following message displays: WEP is enabled.

Manage Fault Settings > Security Policies > WEP Enforced

Log in to the access point and enable WEP.

WEP key length policy violation

Non-IOS and IOS

The WEP key length setting has been violated.

When this fault has been cleared, the following message displays: WEP key length is OK.

Manage Fault Settings > Security Policies > WEP Key Length

Check the WEP key settings on the access point to make sure they match the WLSE settings.

WNM failed to authenticate with WDS.

IOS

Authentication required to open a WLCCP channel between the WLSE and the WDS failed.

Manage Fault Settings > Thresholds > WDS > Authentication Failures

Verify that the WLSE credentials used to authenticate with the WDS are correct.

For more information, see the managing devices information in the online help or the User Guide for the CiscoWorks Wireless LAN Solution Engine, Release 2.5.


WLSE Fault

Table 2-2 WLSE Fault 

Fault Description
Explanation
Related Setting
Recommended Action

Dot11mib view is not enabled on some Access Points. Please consult online help for details

The device is not configured with the iso (dot11 mib) view, and cannot be managed effectively by the WLSE.

This can cause some WLSE report information to be missing and some WLSE faults may not be generated.

When this fault has been cleared, the following message displays: No Dot11mib view misconfigurations detected.

Manage Fault Settings > Thresholds > WLSE > Dot11mib view enabled

Configure the devices and the WLSE as described in Devices are placed in Misconfigured Devices group after discovery and dot11mib fault is displayed..


AAA Server Faults

Table 2-3 Server Faults 

Fault Description
Server Type
Explanation
Related Setting
Recommended Action

Authentication failed. Please check EAP-MD5, LEAP, PEAP, or RADIUS credentials

EAP-MD5

The server is reachable but the credentials are incorrect.

When this fault has been cleared, the following message displays: Authentication succeeded

Manage Fault Settings > Thresholds > EAP-MD5 /LEAP/
PEAP/RADIUS> Response Time

Make sure that the credentials are set correctly by selecting Devices > Discover > AAA Server.

EAP-MD5 server is not available

EAP-MD5

The EAP-MD5 server is not available.

When this fault has been cleared, the following message displays: EAP-MD5 server is available

Manage Fault Settings > Thresholds > Leap > Response Time

Check the server configuration.

EAP-MD5 server is Degraded

EAP-MD5

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: EAP-MD5 server is OK

Manage Fault Settings > Thresholds > EAP-MD5 > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

EAP-MD5 server is Overloaded

EAP-MD5

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: EAP-MD5 server is OK

Manage Fault Settings > Thresholds > EAP-MD5 > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

LEAP server is not available

LEAP

The LEAP server is not available.

This can be caused if you have enabled this policy and you are using a non-Cisco client with EAP.

When this fault has been cleared, the following message displays: LEAP server is available

Manage Fault Settings > Thresholds > Leap > Response Time

Check the server configuration.

LEAP server is Degraded

LEAP

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: LEAP server is OK.

Manage Fault Settings > Thresholds > Leap > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

LEAP server is Overloaded

LEAP

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: LEAP server is OK.

Manage Fault Settings > Thresholds > Leap > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

PEAP server is not available

PEAP

The PEAP server is not available.

When this fault has been cleared, the following message displays: PEAP server is available

Manage Fault Settings > Thresholds > Peap > Response Time

Check the server configuration.

PEAP server is Degraded

PEAP

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: PEAP server is OK.

Manage Fault Settings > Thresholds > Peap > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

PEAP server is Overloaded

PEAP

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: PEAP server is OK

Manage Fault Settings > Thresholds > Peap > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Radius server is not available

PEAP

The RADIUS server is not available.

When this fault has been cleared, the following message displays: Radius server is available

Manage Fault Settings > Thresholds > Radius > Response Time

Check your server configuration.

Radius server is Degraded

PEAP

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: Radius server is OK.

Manage Fault Settings > Thresholds > Radius > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Radius server is Overloaded

PEAP

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: Radius server is OK.

Manage Fault Settings > Thresholds > Radius > Response Time

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.


Switch Faults

Table 2-4 Switch Faults 

Fault Description
Explanation
Related Setting
Recommended Action

CPU utilization is Degraded (utilization %)

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: CPU utilization is Ok.

Manage Fault Settings > Thresholds > Switch > CPU Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

CPU utilization is Overloaded (utilization %)

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: CPU utilization is Ok.

Manage Fault Settings > Thresholds > Switch > CPU Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Device was not reachable via SNMP

The SNMP Agent on the switch is down.

When this fault has been cleared, the following message displays: Device was reachable via SNMP.

Manage Fault Settings > Thresholds > Switch > SNMP Reachable

Make sure that the switch SNMP agent is active.

Module is down

The module is down.

When this fault has been cleared, the following message displays: Module is up.

Manage Fault Settings > Thresholds > Switch > Module Status

Check the module in the switch and correct the problem.

Port could not agree with other end on duplex mode

The port could not agree with the far end on port duplex, and is in disagree(3) mode.

When this fault has been cleared, the following message displays: Port duplex state is OK.

This fault is not generated based on a threshold or policy violation.

Make sure the duplex mode on both ends match.

Switch memory utilization is Degraded (utilization %)

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: Switch memory utilization is Ok.

Manage Fault Settings > Thresholds > Switch > Memory Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Switch memory utilization is Overloaded (utilization %)

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: Switch memory utilization is Ok.

Manage Fault Settings > Thresholds > Switch > Memory Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Switch Port bandwidth utilization is Degraded (utilization %)

The fault threshold set for the degraded state has been exceeded.

When this fault has been cleared, the following message displays: Switch port bandwidth utilization is Ok.

Manage Fault Settings > Thresholds > Switch > Port Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.

Switch Port bandwidth utilization is Overloaded (utilization %)

The fault threshold set for the overloaded state has been exceeded.

When this fault has been cleared, the following message displays: Switch port bandwidth utilization is Ok.

Manage Fault Settings > Thresholds > Switch > Port Utilization

Verify that the fault threshold is set correctly.

If the threshold is set correctly, review your network to determine the action necessary to clear the fault condition.


Router Fault

Table 2-5 Router Fault 

Fault Description
Explanation
Related Setting
Recommended Action

Device was not reachable via SNMP

The SNMP Agent on the switch is down.

When this fault has been cleared, the following message displays: Device was reachable via SNMP.

Manage Fault Settings > Thresholds > Router > SNMP Reachable

Make sure that the router SNMP agent is active.