Configuring Single-ended SLM in VLAN Networking

This section describes how to configure single-ended synthetic loss measurement (SLM) in virtual local area network (VLAN) networking. To collect performance statistics for frame loss on point-to-multipoint or multipoint-to-multipoint links, deploy single-ended SLM, which helps monitor link quality.

Context

In VLAN networking, single-ended SLM includes on-demand and proactive SLM functions. On-demand SLM collects single-ended frame loss statistics at one or more specific times for diagnosis. It is used on the pseudo wire (PW) or attachment circuit (AC) side. Proactive SLM collects single-ended frame loss statistics periodically. It is used on the PW side only.

To collect performance statistics about frame loss at a time or periodically, configure single-ended on-demand synthetic frame LM.
To continuously collect performance statistics about frame loss, configure single-ended proactive synthetic frame LM.

Procedure

Configure single-ended on-demand SLM.
1. Perform the following steps on the devices at both ends of a link on a VLAN where single-ended on-demand SLM will be implemented:
  1. Run system-view
    The system view is displayed.
  2. Run cfm enable
    
    CFM is enabled globally.
  3. Run cfm md md-name
    The MD view is displayed.
  4. Run ma ma-name
    The MA view is displayed.
  5. Run map vlan vlan-id
    
    The maintenance association (MA) is bound to a VLAN.
  6. Run mep mep-id
    
    A maintenance association end point (MEP) is configured.
  7. Run remote-mep mep-id mep-id
    
    A remote MEP (RMEP) is specified.
  8. Run mep ccm-send enable
    
    The MEP is enabled to send continuity check messages (CCMs).
  9. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The RMEP is enabled to receive CCMs.
  10. Run test-id test-id [ testid-file ]mep mep-id [ description description ]
    
    A test instance is created.
2. Perform the following configuration on the RMEP that receives SLM frames:
  
  Run loss-measure single-ended-synthetic receive test-id test-id [ time-out timeout-value ]
  
  The RMEP is enabled to receive SLM frames.
3. Perform the following configuration on the MEP that sends SLM frames to initiate on-demand SLM:
  
  Run loss-measure single-ended-synthetic send test-id test-id interval { 100 | 1000 } [ sending-count count-value ] [ time-out time-out-value ]
  
  The MEP is enabled to send SLM frames.
4. Run commit
  
  The configuration is committed.
Configure single-ended proactive SLM.
1. Perform the following steps on the devices at both ends of a link on a VLAN where single-ended proactive SLM will be implemented:
  1. Run system-view
    The system view is displayed.
  2. (Optional) Run y1731 pm-mode enable
    
    Performance management (PM) is enabled to manage Y.1731 proactive performance statistics.
  3. Run cfm enable
    
    CFM is enabled globally.
  4. Run cfm md md-name
    The MD view is displayed.
  5. Run map vlan vlan-id
    
    The MA is bound to a VLAN.
  6. Run mep mep-id
    
    A MEP is configured.
  7. Run remote-mep mep-id mep-id
    
    An RMEP is specified.
  8. Run mep ccm-send enable
    
    The MEP is enabled to send CCMs.
  9. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The RMEP is enabled to receive CCMs.
  10. Run test-id test-id [ testid-file ]mep mep-id [ description description ]
    
    A test instance is created.
  11. (Optional) Run loss-measure single-ended-synthetic local-ratio-threshold test-id test-id-value upper-limit upper-limit lower-limit lower-limit
  12. (Optional) Run loss-measure single-ended-synthetic remote-ratio-threshold test-id test-id-value upper-limit upper-limit lower-limit lower-limit
2. Perform the following configuration on the RMEP that receives SLM frames:
  
  Run loss-measure single-ended-synthetic receive test-id test-id [ time-out timeout-value ]
  
  The RMEP is enabled to receive SLM frames.
3. Perform the following configuration on the MEP that send SLM frames to initiate proactive SLM:
  
  Run loss-measure single-ended-synthetic continual send test-id test-id interval { 1000 | 10000 } [ sending-count count-value ] [ time-out timeout ] [ period period ]
  
  The MEP is enabled to send SLM frames.
4. Run commit
  
  The configuration is committed.