Checking Alarm Indication Signal and Locked Features

This article describes how to enable the Alarm Indication Signal (AIS) and Locked (LCK) features.

CLI Configurations

At Switch6

• Verify CCM errors

your product# show ethernet cfm errors

Shows no link failure, as no error is detected at Switch 6

• Make interface P3, P4 as down, to raise a defect/fault in sample topology.

your product(config)# interface gigabitethernet 0/3
your product(config-if)# shutdown
your product(config-if)# exit
your product(config)# interface gigabitethernet 0/4
your product(config-if)# shutdown

• Verify CCM errors.

your product# show ethernet cfm errors
MEP-ID :  4
Level VLAN RMEP-ID   Current defect type
----- ---- -------   -------------------
4     4    3         loss of continuity
MEP-ID :  5
Level VLAN RMEP-ID   Current defect type
----- ---- -------   -------------------
2     4    6         loss of continuity

Shows link failure, as an error is detected at Switch 6

• Configure client layer level for domain OQ2.

your product# configure terminal
your product(config)# ethernet cfm domain  name OQ2 level 2
your product(config-ether-ecfm)# client-layer-level 4
your product(config-ether-ecfm)# exit

• Configure AIS capability for MEPID 5.

your product(config)# interface gigabitethernet 0/2
your product(config-if)# ethernet  cfm mep level 2 inward mpid 5 vlan 4 active
your product(config-ether-mep)#  set ais enable
your product(config-ether-mep)#  end

• Verify whether the AIS condition is received at MEPID 4 at level 4 and VLAN 4.

your product# show ethernet cfm errors
MEP-ID :  4         
Level VLAN RMEP-ID   Current defect type 
----- ---- -------   -------------------  
4     4    3         loss of continuity  
4     4    -         ais condition        
MEP-ID :  5         
Level VLAN RMEP-ID   Current defect type  
----- ---- -------   -------------------   
2     4    6         loss of continuity 

• Make interface P3, P4 as up, to check if there is any link failure (error/fault/defect).

your product(config)# interface gigabitethernet 0/3
your product(config-if)# no shutdown
your product(config-if)# exit
your product(config)# interface gigabitethernet 0/4
your product(config-if)# no shutdown

• Wait for 15 seconds and check link failure (error/fault/defect).
• Verify CCM errors.

your product# show ethernet cfm errors
your product#

Shows no link failure, as no error is detected at Switch 6.

• Disable AIS capability for MEPID 5.

your product(config)# interface gigabitethernet 0/2
your product(config-if)# ethernet  cfm mep level 2 inward mpid 5 vlan 4 active
your product(config-ether-mep)#  set ais disable
your product(config-ether-mep)#  end

• Make interface P3 and P4 as down, to raise a defect/fault in sample topology.

your product(config)# interface gigabitethernet 0/3
your product(config-if)# shutdown
your product(config-if)# exit
your product(config)# interface gigabitethernet 0/4
your product(config-if)# shutdown

• Verify CCM errors at Switch 6.

your product# show ethernet cfm errors
MEP-ID :  4
Level VLAN RMEP-ID   Current defect type
----- ---- -------   -------------------
4     4    3         loss of continuity
MEP-ID :  5
Level VLAN RMEP-ID   Current defect type
----- ---- -------   -------------------
2     4    6         loss of continuity

Shows link failure, as an error is detected at Switch 6.

• Configure MEPID 5 as out-of-service.

your product(config)# interface gigabitethernet 0/2
your product(config-if)# ethernet  cfm mep level 2 inward mpid 5 vlan 4 active
your product(config-ether-mep)#  set out-of-service enable
your product(config-ether-mep)#  end

• Verify whether the defect for MEPID 4 at level 4 and VLAN 4 is suppressed.

your product# show ethernet cfm errors
MEP-ID :  4         
Level VLAN RMEP-ID   Current defect type 
----- ---- -------   -------------------  
4     4    3         loss of continuity    
4     4    -         lck condition         
MEP-ID :  5         
Level VLAN RMEP-ID   Current defect type  
----- ---- -------   -------------------   
2     4    6         loss of continuity  

• Verify whether the LCK condition exists for MEPID 4 at level 4 and VLAN 4.

your product# show ethernet cfm maintenance-point local detail mpid 4
------------------------------------------------------
MPID: 4    MdLevel: 4    VLAN: 4    Dir: Up
------------------------------------------------------
Client MEG Level                :Not Configured
Off-Load Status                 :Disabled
Out-Of-Service (LCK)
--------------------
Status                          :Un-Locked(In-Service)
Condition                        :Exist
Remote Defect Indication (RDI)
------------------------------
Capability                        :Enabled
Period                            :Not Configured
Loopback (LB)
-------------
Capability                         :Enabled
Multicast LBM Reception Capability :Disabled
Test Signal (TST)
-----------------
Multicast TST Reception Capability :Disabled
Alarm Indication Signal (AIS)
-----------------------------
Capability                         :Disabled
Condition                          :Does not exist
Delay Measurement (DM)
----------------------
One-Way DM Reception Capability    :Enabled
One-Way DM Transaction Interval    :Not Configured
Dmr Optional Fields                :Not Included
Delay Threshold                    :200 microseconds
Frame Loss Measurement (LM)
----------------------------
Near-End Loss Threshold            :Not Configured
Far-End Loss Threshold             :Not Configured

SNMP Configurations

At Switch6

• Verify CCM errors.

[Index: ContextID = 0, MD-Index = 2, MA-Index = 2, MEP-ID = 4]
% snmp0 get {fsMIEcfmMepDefects.0.2.2.4}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.2.2.4 {OCTET STRING} 00}
[Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]
% snmp0 get {fsMIEcfmMepDefects.0.3.3.5}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.3.3.5 {OCTET STRING} 00}

Shows no link failure, as no error is detected at Switch 6.

• Make interface P3, P4 as down, to raise a defect/fault in sample topology.

[Index: Interface Number = 3]
% snmp0 set {{ifMainAdminStatus.3 down}}
[Index: Interface Number = 4]
% snmp0 set {{ifMainAdminStatus.4 down}}

• Verify CCM errors.

[Index: ContextID = 0, MD-Index = 2, MA-Index = 2, MEP-ID = 4]
% snmp0 get {fsMIEcfmMepDefects.0.2.2.4}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.2.2.4 {OCTET STRING} 20}
[Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]
% snmp0 get {fsMIEcfmMepDefects.0.3.3.5}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.3.3.5 {OCTET STRING} 20}

Shows link failure, as an error is detected.

• Configure client layer level for domain OQ2. [Index: ContextID = 0, MD-Index = 3]

% snmp0 set {{fsMIY1731MegRowStatus.0.3 notInService}}
% snmp0 set {{fsMIY1731MegClientMEGLevel.0.3 4}}
% snmp0 set {{fsMIY1731MegRowStatus.0.3 active}}

• Configure AIS capability for MEPID 5. [Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]

% snmp0 set {{fsMIY1731MepRowStatus.0.3.3.5 notInService}}
% snmp0 set {{fsMIY1731MepAisCapability.0.3.3.5 enabled}}
% snmp0 set {{fsMIY1731MepRowStatus.0.3.3.5 active}}

• Verify whether the AIS condition is set for MEPID 4 at level 4 and VLAN 4. [Index: ContextID = 0, MD-Index = 2, MA-Index = 2, MEP-ID = 4]

% snmp0 get {{fsMIY1731MepAisCondition.0.2.2.4}}
{1.3.6.1.4.1.29601.2.7.1.2.4.1.91.0.2.2.4 INTEGER true}

• Make interface P3, P4 as up, to check if there is any link failure (error/fault/defect).

• [Index: Interface Number = 3]

• % snmp0 set {{ifMainAdminStatus.3 up}}

• [Index: Interface Number = 4]

• % snmp0 set {{ifMainAdminStatus.4 up}}

• Wait for 15 seconds and check link failure (error/fault/defect).

• Verify CCM errors.

[Index: ContextID = 0, MD-Index = 2, MA-Index = 2, MEP-ID = 4]
% snmp0 get {fsMIEcfmMepDefects.0.2.2.4}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.2.2.4 {OCTET STRING} 00}
[Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]
% snmp0 get {fsMIEcfmMepDefects.0.3.3.5}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.3.3.5 {OCTET STRING} 00}

Shows no link failure, as no error is detected at Switch 6.

• Disable AIS capability for MEPID 5. [Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]

% snmp0 set {{fsMIY1731MepRowStatus.0.3.3.5 notInService}}
% snmp0 set {{fsMIY1731MepAisCapability.0.3.3.5 disabled}}
% snmp0 set {{fsMIY1731MepRowStatus.0.3.3.5 active}}

• Make interface P3, P4 as down, to raise a defect/fault in sample topology.

[Index: Interface Number = 3]
% snmp0 set {{ifMainAdminStatus.3 down}}
[Index: Interface Number = 4]
% snmp0 set {{ifMainAdminStatus.4 down}}

• Verify CCM errors.

[Index: ContextID = 0, MD-Index = 2, MA-Index = 2, MEP-ID = 4]
% snmp0 get {fsMIEcfmMepDefects.0.2.2.4}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.2.2.4 {OCTET STRING} 20}
[Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]
% snmp0 get {fsMIEcfmMepDefects.0.3.3.5}
{1.3.6.1.4.1.2076.160.1.0.7.1.14.0.3.3.5 {OCTET STRING} 20}

Shows no link failure, as no error is detected at Switch 6.

• Configure MEPID 5 as out-of-service. [Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]

% snmp0 set {{fsMIY1731MepOutOfService.0.3.3.5 true}}

• Verify whether the LCK condition exists for MEPID 4 at level 4 and VLAN 4. [Index: ContextID = 0, MD-Index = 3, MA-Index = 3, MEP-ID = 5]

% snmp0 get {fsMIY1731MepOutOfService.0.3.3.5}
{1.3.6.1.4.1.29601.2.7.1.2.4.1.2.0.3.3.5 INTEGER true}