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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}
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