Monitoring Network Performance with Service OAM

The subsequent articles describe the IEEE 802.1ag “Service OAM” function and how to set it up on your Metro Ethernet Network to perform end-to-end monitoring. Service OAM (or CFM Connectivity Fault Management) encompasses fault management and perf...

The steps required to set up Connectivity Fault Management (CFM) are: Set up Maintenance Domains (MD). Set up Maintenance Associations (MA), also known as Maintenance Entity Groups (MEG). Set up Maintenance association End Points (MEP). ...

Link Trace Messages (LTM) are multicast frames transmitted by a MEP to track the path (hopby-hop) to a destination MEP. Each receiving MEP sends a trace route reply directly to the originating MEP, and regenerates the trace route message. LTM are di...

To view the link trace message information Access the page SOAM ▶ CFM ▶ MEP ▶ LTM . Click the MEPID of the MEP for which you want to view LTM information. For more information on specific parameters, refer to the "MEP Link Tra...

Loopback messages are unicast frames transmitted by a MEP. Sending a high volume of loopback messages can test the bandwidth, reliability or jitter of a service. A MEP can send a loopback to any MEP or MIP in the service. Loopback messages are discu...

To view the loopback message information Access the page SOAM ▶ CFM ▶ MEP ▶ LBM . Click the MEPID of the MEP for which you want to view LBM information. For more information on specific parameters, refer to the "MEP Loopback (...

DMM measurements (delay and delay variation) work as follows. A DMM frame is sent from an originating unit to one of the remote devices linked to the Cisco Provider Connectivity Assurance Sensor Control . When the DMM frame is received by the remot...

To view delay measurement results details Access the page SOAM ▶ CFM ▶ DMM ▶ Results . The results for all Delay Measurement Instances are displayed. Note : For more information on how delay measurements results are calculated, ...

To set up packet loss instances Access the page SOAM ▶ CFM ▶ Packet Loss ▶ Configuration . A listing of all existing packet loss instances is displayed. Click Add to create a packet loss instance or click the packet loss instance i...

CAUTION : Deleting a PL instance will also delete all SA metrics that use this PL instance as the metric source. To delete a packet loss instance Access the page SOAM ▶ CFM ▶ Packet Loss ▶ Configuration . Click the index of t...

Packet loss results are calculated with the received CCM during the reference period. To view details of packet loss results Access the page SOAM ▶ CFM ▶ Packet Loss ▶ Results . A summary of results for all packet loss instances is displ...

Synthetic loss measurement is used to measure the frame loss ratios (near-end and far-end) between two MEPs. Measurements and calculations are performed at one end only. You have to set up the SLM instance on the unit that you want to perform and di...

To delete a synthetic loss measurement instance Access the page SOAM ▶ CFM ▶ SLM ▶ Configuration . Click the SLM instance index to delete. Click Delete . © 2024 Cisco and/or its affiliates. All rights reserved....

To view synthetic loss measurement results details Access the page SOAM ▶ CFM ▶ SLM ▶ Results . A summary of results for all SLM instances is displayed. Click the Index of the SLM instance for which you want to view the synthetic l...

Use the Two-Way Active Measurement Protocol (TWAMP) to measure round-trip IP performance between any two TWAMP-enabled units deployed in a network. With TWAMP, you can reliably perform in-band, roundtrip performance measurements and identify perform...