Configuring and Enabling Linktrace Messages

After configuring and enabling LTMs, every MEP (if MD, MA, and MEP are configured) can transmit LTMs.

CLI Configurations

To configure a linktrace message

1. Execute the steps given in CLI Configurations to configure MEP before sending the LTMs.

For ECFM compliant linktrace feature

1. Execute the steps given in section 3.3.6.1 to enable ECFM.

2. Enable linktrace caching on the device.
   your product# config terminal
   your product(config)# ethernet cfm traceroute cache
   your product(config)# end

3. Send the LTM to an MEP destination.
   your product# traceroute ethernet mac 00:02:02:03:04:02 level 7 vlan 101 time-to-live 32

Traceroute to Macaddress 00:02:02:03:04:02 in domain  TestDomain1 at level 7 
with vlanId 101
--------------- -------------------------------------
Hops      Host              Ingress MAC       Ingress Action   Relay Action
          Next Host         Egress MAC        Egress Action    Fwd Status
----------------- -----------------------------------
1   00:01:02:03:04:01:00:02  00:02:02:03:04:02   IngOK   RlyHit
    00:02:02:03:04:01:00:02         -    -           Terminal MEP

your product#

For Y.1731 compliant linktrace feature

1. Execute the steps in CLI Configurations to enable Y.1731.

2. Enable linktrace caching on the device.
   your product# config terminal
   your product(config)# ethernet cfm traceroute cache
   your product(config)# end

3. Send theLTMs to the MEP destination.
   your product# traceroute ethernet mac 00:02:02:03:04:02 level 7 vlan 101

Traceroute to Macaddress 00:02:02:03:04:02 in domain  meg1 at level 7
with vlanId 101
---------------------- --------------------------------
Hops      Host            Ingress MAC        Ingress Action   Relay Action 
          Next Host       Egress MAC         Egress Action    Fwd Status
----------------------- -------------------------------
1   00:00:00:00:00:00:00:00    -           -          RlyHit
    00:00:00:00:00:00:00:00  00:01:02:03:04:02  EgrOK   Not Forwarded

For sending a Linktrace message to an MEP destination using MEPID

Example: traceroute ethernet mpid 101 level 7 vlan 101 time-to-live 32

• Mac Address of MEP with specified target mpid must be learned prior to the execution of the command.
• For a VLAN-UnAware MEP, vlan keyword must not be provided with the command.
• MEP at a specified level and VLAN must be enabled for a traceroute transaction.
• ECFM should be enabled for the successful traceroute message transmission
• In case Y.1731 is enabled, the user can also provide the time within which LTR should be received.

Example: traceroute ethernet mpid 101 level 7 vlan 101 timeout 10
This implies that the responder will wait only for 10 seconds for the trace-route reply.

SNMP Configurations

To configure linktrace message

1. Execute the steps given in SNMP Configurations to configure MEP before sending the LTMs.

For ECFM compliant linktrace feature

1. Execute the steps given in section SNMP Configurations to enable ECFM.

2. Enable linktrace caching on the device.[Index: ContextID = 0]
   %snmp0 set {{ fsMIEcfmLtrCacheStatus.0 enabled }}

3. Send the LTM to an MEP destination. [Index: ContextID = 0, MD-Index = 1, MA-Index = 1, MEP-Index = 5]
   % snmp0 set {{fsMIEcfmMepTransmitLtmTargetIsMepId.0.1.1.5 false }}
   % snmp0 set {{fsMIEcfmMepTransmitLtmTargetMacAddress.0.1.1.5 00:02:02:03:04:0a }}
   % snmp0 set {{fsMIEcfmMepTransmitLtmTtl.0.1.1.5 32 }}
   % snmp0 set {{fsMIEcfmMepTransmitLtmStatus.0.1.1.5 transmit }}

4. View the information received in the LTR.
   % snmp0 walk x fsMIEcfmLtrTable {puts $x}

{1.3.6.1.4.1.2076.160.1.0.8.1.3.0.1.1.5.2.1 Unsigned32 31}
{1.3.6.1.4.1.2076.160.1.0.8.1.4.0.1.1.5.2.1 INTEGER false}
{1.3.6.1.4.1.2076.160.1.0.8.1.5.0.1.1.5.2.1 INTEGER true}
{1.3.6.1.4.1.2076.160.1.0.8.1.6.0.1.1.5.2.1 {OCTET STRING} 00:01:02:03:04:01:00:0A}
{1.3.6.1.4.1.2076.160.1.0.8.1.7.0.1.1.5.2.1 {OCTET STRING} 00:02:02:03:04:01:00:0A}
{1.3.6.1.4.1.2076.160.1.0.8.1.8.0.1.1.5.2.1 INTEGER rlyHit}
{1.3.6.1.4.1.2076.160.1.0.8.1.9.0.1.1.5.2.1 INTEGER 0}
{1.3.6.1.4.1.2076.160.1.0.8.1.10.0.1.1.5.2.1 {OCTET STRING} {}}
{1.3.6.1.4.1.2076.160.1.0.8.1.11.0.1.1.5.2.1 {OBJECT IDENTIFIER} 0}
{1.3.6.1.4.1.2076.160.1.0.8.1.12.0.1.1.5.2.1 {OCTET STRING} {}}
{1.3.6.1.4.1.2076.160.1.0.8.1.13.0.1.1.5.2.1 INTEGER 0}
{1.3.6.1.4.1.2076.160.1.0.8.1.14.0.1.1.5.2.1 {OCTET STRING} 00:00:00:00:00:00}
{1.3.6.1.4.1.2076.160.1.0.8.1.15.0.1.1.5.2.1 INTEGER 0}
{1.3.6.1.4.1.2076.160.1.0.8.1.16.0.1.1.5.2.1 {OCTET STRING} {}}
{1.3.6.1.4.1.2076.160.1.0.8.1.17.0.1.1.5.2.1 INTEGER egrOK}
{1.3.6.1.4.1.2076.160.1.0.8.1.18.0.1.1.5.2.1 {OCTET STRING} 00:02:02:03:04:0A}
{1.3.6.1.4.1.2076.160.1.0.8.1.19.0.1.1.5.2.1 INTEGER 1}
{1.3.6.1.4.1.2076.160.1.0.8.1.20.0.1.1.5.2.1 {OCTET STRING} 53:6C:6F:74:30:2F:31:30}
{1.3.6.1.4.1.2076.160.1.0.8.1.21.0.1.1.5.2.1 {OCTET STRING} 1F:00:04:00:02}

For Y.1731 compliant linktrace feature

1. Execute the steps in Enabling Ethernet Y.1731 ► SNMP Configurations to enable Y.1731, then enable linktrace caching and send the LTM.