Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 835

ethernet {
connectivity-fault-management {
performance-monitoring {
hardware-assisted-timestamping;
}
}
}
}
NOTE: The hardware-assisted timestamping option for ETH-DM is available for
Ethernet interfaces on Enhanced or Enhanced Queuing DPCs only.
4. At router MX-PE2 , start a one-way frame delay measurement session from local
MEP to remote MEP
101
user@MX-PE2> monitor ethernet delay-measurement one-way mep 201
maintenance-domain md6 maintenance-association ma6 count 10
One-way ETH-DM request to 00:90:69:0a:43:94, Interface ge-0/2/5.0
1DM Frames sent : 10
--- Delay measurement statistics ---
Packets transmitted: 10
Average delay: NA, Average delay variation: NA
Best case delay: NA, Worst case delay: NA
At router , which contains the initiator MEP, only the ETH-DM frame
5. MX-PE2
counts are available. Furthermore, the only frame count tallied for the initiator
of a one-way frame delay measurement is the count of 1DM frames transmitted.
ETH-DM frame counts (the number of 1DM, DMM, and DMR frames exchanged
during an ETH-DM session) are stored in the CFM database of both the initiator
and receiver MEPs. When you display CFM database information, you can also
display the ETH-DM frame counts. You can display CFM database information
for all interfaces on the router, or you can limit the output to MEPs associated
with certain CFM MDs and MAs.
To display CFM database information for MEPs specified by enclosing CFM
entities, use the
mep-database
connectivity-fault-management
ETH-DM frame counts.
In the example configuration for router
defined in MA ma6
connectivity-fault management mep-database
database information for MEP
command output by including the
user@MX-PE2> show oam ethernet connectivity-fault-management mep-database
maintenance-domain md6 maintenance-association ma6
Maintenance domain name: md6, Format: string, Level: 6
Maintenance association name: ma6, Format: string
Continuity-check status: enabled, Interval: 100ms, Loss-threshold: 3
frames
MEP identifier: 101, Direction: down, MAC address: 00:90:69:0a:48:57
Chapter 44: Configuring ITU-T Y.1731 Ethernet Service OAM
on router :
201 MX-PE1
form of the
show oam ethernet
command. A CFM database also stores any
MX-PE2
within MD md6 . Therefore, the
command output displays CFM
101 only, even though you do not filter the
or
local-mep
Example: One-Way Ethernet Frame Delay Measurement
, MEP is the only MEP
101
show oam ethernet
command options.
remote-mep
765