[j-nsp] questions regarding Ethernet frame delay measurements

[Martin T]

Hi,

I have following questions regarding Ethernet frame delay measurements:

1) Why doesn't "monitor ethernet delay-measurement" support "rapid"
option? According to command reference for Junos 16.2 for MX
series(http://www.juniper.net/techpubs/en_US/junos/topics/reference/command-summary/monitor-ethernet-delay-measurement.html)
minimum "wait" interval is 1 second.

2) Is it possible to configure CFM two-way delay-measurements database
size in a way that "show oam ethernet connectivity-fault-management
delay-statistics maintenance-domain <maintenance-domain-name>
maintenance-association <maintenance-association-name>" command
displays for example 10 measurements instead of 100 and calculates
measurements summary("Average two-way delay", "Average two-way delay
variation") based on those 10 measurements? At the moment one can
specify "count", but summary is still calculated based on 100
measurement results. For example here I specify "count 5":

  Remote MAC address: 00:19:e2:b1:1d:c0
    Delay measurement statistics:
    Index  One-way delay  Two-way delay
              (usec)         (usec)
      1                       4920
      2                       4916
      3                       4914
      4                       4956
      5                       4919
    Average two-way delay          : 4888 usec
    Average two-way delay variation: 34 usec
    Best case two-way delay        : 3654 usec
    Worst case two-way delay       : 4956 usec

As seen above, "Average two-way delay" or "Average two-way delay
variation" are not calculated based on those 5 measurement results.


3) Is there a way to keep two-way delay-measurements running as a
daemon? As much as I searched, this can only be triggered with
"monitor ethernet delay-measurement" command.



thanks,
Martin