OAM diagnostic test overview

Introduction to OAM diagnostic tests

The NFM-P provides a set of configurable in-band or out-of-band, packet-based OAM diagnostic tests that allows you to pro-actively manage networks and customer SLAs including:

This chapter provides information about each OAM diagnostic test that can be configured using the NFM-P. See Chapter 89, Service Test Manager for information about higher-level functions that can be performed with each OAM diagnostic test using the STM, such as creating STM test policies and STM test suites.

The correct delivery of services requires that a number of operations must occur correctly at different levels in the service. For example, operations such as the association of packets to a service, VC labels to a service, and each service to a service tunnel, must be performed successfully for the service to pass traffic to subscribers according to their SLAs. Even when tunnels are operating correctly and are correctly bound to services, incorrect information may cause connectivity issues.

For in-band, packet-based testing, the OAM packets closely resemble customer packets to effectively test the forwarding path. However, these packets are distinguishable from customer packets, so they are kept within the service provider network and not forwarded to the customer. For out-of-band testing, OAM packets are sent across a portion of the transport network; for example, across LSPs to test reachability.

On-demand OAM diagnostic test configuration

You can create, manage, and run most OAM diagnostic tests on-demand from the NFM-P STM as a single test entity.

Some OAM diagnostic tests can be configured from alternate launch points on the NFM-P GUI, including the following:

The following table lists the OAM diagnostic tests that are accessible from the NFM-P GUI and provides a link to the appropriate test description and applicable procedure.

Table 90-1: NFM-P supported OAM diagnostic tests and configurations

OAM test category / test type

Test network object or service level

Network level

See Procedure

Ethernet CFM OAM diagnostic tests

Global MEG check

Ethernet

Port

To create and run a Global MEG OAM diagnostic test from the STM

Continuity check (includes CFM dual-ended loss test)

To create and run a Continuity Check OAM diagnostic test from the STM

CFM loopback

To create and run a CFM loopback OAM diagnostic test from the STM

CFM link trace

To create and run a CFM link trace OAM diagnostic test from the STM

CFM Eth test

To create and run a CFM Eth OAM diagnostic test from the STM

CFM two way delay test

To create and run a CFM two way delay OAM diagnostic test from the STM

CFM one way delay test

To create and run a CFM one-way delay OAM diagnostic test from the STM

CFM single ended loss test (7705 SAR only)

To create and run a CFM single-ended loss OAM diagnostic test from the STM

CFM two way SLM

To create and run a CFM two way SLM OAM diagnostic test from the STM

CFM LM test

To create and run a CFM LM OAM diagnostic test from the STM

Performance Monitoring OAM diagnostic tests

PM session test support and configuration

Ethernet

Network element

To configure a PM session OAM diagnostic test from the STM

CFM DMM session test

To configure a CFM DMM session OAM diagnostic test from the STM

CFM SLM session test

To configure a CFM SLM session OAM diagnostic test from the STM

CFM LMM session test

To configure a CFM LMM session OAM diagnostic test from the STM

TWAMP Light session test

IP Layer 3 interface

Network element

To configure a TWAMP Light reflector

TWAMP Light session test

To configure a TWAMP Light session OAM diagnostic test from the STM

TCC test

To configure a TCC OAM diagnostic test from the STM

MPLS DM session test

MPLS

LSP

To configure an MPLS DM session OAM diagnostic test from the STM

Service OAM diagnostic tests

Service site ping

Service transport binding (level 5)

Network element

To create and run a service site ping OAM diagnostic test from the STM

VCCV ping

Service (level 6)

VPRN site

To create and run a VCCV ping OAM diagnostic test from the STM

VCCV trace

To create and run VCCV trace OAM diagnostic test from the STM

To create and run a VCCV trace OAM diagnostic from a static PW to a dynamic PW segment from the STM (static PW to a dynamic PW segment)

To create and run a VCCV trace OAM diagnostic from a dynamic PW to a static PW segment from the STM (dynamic PW to a static PW segment)

Y.1564 bidirectional tests

Network element

STM Y.1564 test configuration

L2 service OAM diagnostic tests

MAC populate

Service (level 6)

VPLS site

Epipe VLL site

VLL

To create and run a MAC populate OAM diagnostic test from the STM

MAC purge

To create and run a MAC purge OAM diagnostic test from the STM

MAC ping

To create and run a MAC ping OAM diagnostic test from the STM

MAC trace

To create and run a MAC trace OAM diagnostic test from the STM

CPE ping

VPLS site

Epipe VLL site

To create and run a CPE ping OAM diagnostic test from the STM

ANCP loopback

Network element

To create and run an ANCP loopback OAM diagnostic test from the STM

VXLAN ping

VPLS site

To create and run a VXLAN ping OAM diagnostic test from the STM

L3 service OAM diagnostic tests

VPRN ping

Service (level 6)

VPRN site

To create and run a VPRN ping or VPRN trace OAM diagnostic test from the STM (STM method)

To create and run a VPRN Ping, VPRN Trace, ICMP Ping, or ICMP Trace OAM diagnostic test from a service manager form (from a service)

VPRN trace

Service transport OAM diagnostic tests

Tunnel ping

Service transport (level 4)

Service tunnel (SDP)

To create a tunnel ping OAM diagnostic test from the STM (STM method)

To create and run a tunnel ping OAM diagnostic test from a service tunnel (service tunnel method)

MTU ping

To create and run an MTU ping OAM diagnostic test from the STM (STM method)

To create and run an MTU ping OAM diagnostic test from a service tunnel (service tunnel method)

MPLS OAM diagnostic tests

LSP ping

Transport (level 3)

LSP

LSP path

MPLS-TP LSP

To create and run a MPLS LSP ping OAM diagnostic test from the STM

LSP trace

To create and run a MPLS LSP trace OAM diagnostic test from the STM

LDP tree trace

MPLS site

LDP site

To create and run a MPLS LDP tree trace OAM diagnostic test from the STM

P2MP LSP ping

P2MP LSP, P2MP mLDP

P2MP path

To create and run a MPLS P2MP LSP ping OAM diagnostic test from the STM

P2MP LSP trace

To create and run a MPLS P2MP LSP trace OAM diagnostic test from the STM

L1/L2 OAM diagnostic tests

ATM ping

Layer 1 or Layer 2 (level 1)

ATM PVC connection

To create and run an ATM ping OAM diagnostic test from the STM (STM method)

To configure an ATM OAM loopback from a device Properties form (Properties form method)

Multicast OAM diagnostic tests

BIER ping

Routed network (level 2)

IP multicast traffic

To create and run a BIER ping OAM diagnostic test from the STM

BIER trace

Routed network (level 2)

IP multicast traffic

To create and run a BIER trace OAM diagnostic test from the STM

MFIB ping

Service (level 6)

VPLS site

Epipe VLL site

To create and run an MFIB ping OAM diagnostic test from the STM

Mrinfo

Routed network (level 2)

IP multicast traffic

To create and run an Mrinfo OAM diagnostic test from the STM

Mtrace

To create and run an Mtrace OAM diagnostic test from the STM

Mtrace2

To create and run an Mtrace2 OAM diagnostic test from the STM

ICMP OAM diagnostic tests

ICMP ping

Service (level 6)

VPRN site

To create and run an ICMP ping OAM diagnostic test from the STM

ICMP trace

To create and run an ICMP trace OAM diagnostic test from the STM

DNS ping

To create and run an ICMP DNS ping OAM diagnostic test from the STM

VMN OAM diagnostic tests

PRBS test

1830 VWM TLU/ITP

Port

To create and run a PRBS test

AOS CPE OAM diagnostic tests

CPE SLA test

Ethernet

Port or NE

Sample OmniSwitch device SLA testing

CPE SLA test group

Sample OmniSwitch device SLA testing

To create and run a OmniSwitch CPE SLA diagnostic test from the STM

Non-STM OAM diagnostic tests

OmniSwitch ping and traceroute OAM test

Ethernet

Port or NE

To create an OmniSwitch ping or traceroute OAM diagnostic test using a CLI script

To configure and run an OmniSwitch OAM diagnostic ping test CLI script

To configure and run an OmniSwitch OAM traceroute test CLI script

OmniSwitch advanced loopback test

Ethernet

Port

To configure an advanced loopback test on an OmniSwitch from a device Properties form

F5 OAM loopback test (7705 SAR-M/ME)

Ethernet

Port

To run the F5 OAM loopback diagnostic test from a 7705 SAR-M/ME Properties form

802.3ah EFM OAM diagnostic test

Ethernet

Port

To configure an 802.3ah EFM OAM diagnostic test from an NE Properties form (Properties form method)

To configure an 802.3ah EFM OAM diagnostic test on an OmniSwitch Properties form (OmniSwitch specific)

One-time service validation test

Service (level 6)

VLL, VPLS, and VPRN services

Composite services

Dynamic LSPs

Service tunnels

To run a one-time validation test on a service

Multiple OAM diagnostic test configuration

You can also create, schedule, and run test suites that contain groups of OAM diagnostic tests using the NFM-P STM. The use of test suites is especially valuable when multiple objects of the same type require testing. Test suites can be scheduled to run on a regular basis to provide continual network performance feedback.

See Chapter 89, Service Test Manager for information about configuring multiple OAM diagnostic tests as part of a test suite using the STM.

See Chapter 5, NFM-P-based schedules for information about scheduled tasks.