Monitoring Network Performance with Service OAM

Overview This article describes how to use the Performance Assurance Agent (PAA™) for monitoring network performance. The Performance Assurance Agent (PAA) is a hardware-assisted active-measurement function that computes Layer-2 or Layer-3 (IPv4...

Service OAM (SOAM) is a layer-2 protocol used for Connectivity Fault Management (CFM) and Performance Monitoring (PM) in a Carrier Ethernet Network (CEN) and encompasses the fault management and performance management capabilities of the Cisco Provi...

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 d...

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...

DMM measurements (delay and delay variation) work as follows. A DMM frame is sent from the originating unit to the remote unit. When the DMM frame is received by the remote unit, it sends a DMR to the originating unit. The reception of the DMM fra...

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 inde...

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...

Use this page to view a summary of all CFM interfaces or manage the details related to a selected interface. To view CFM interface information Access the page SOAM ▶CFM ▶Interface . The CFM Interfaces page opens. All available CFM interf...

The VSP function is used to reflect VSP (vendor-specific) frames to the sender. Note: This function is to be used only with VSP when connecting to Layer-2 VSP actuator devices. To set up the VSP function Access the page SOAM ▶C...

For a given VID, the default MHF MD level plus the set of Maintenance Associations that include that VID define the VID's active MD levels. The MD level at which MHFs could be created on a port for a given VID is the VID's lowest active MD level tha...

This article describes the Service Availability (SA) function and how to set it up in your Metro Ethernet Network. The SA function is used to determine the number of unavailable seconds and other counters for a specific service. You can use the SA f...

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