Information About Depi Latency Measurement; How To Configure Dlm; Configuring Dlm; Verifying Dlm Configuration - Cisco Remote PHY Shelf 7200 Software Configuration Manual And Command Reference

Information about DEPI Latency Measurement

Information about DEPI Latency Measurement
The DEPI Latency Measurement (DLM) packet is a specific type of data packet used for measuring the
network latency between the CCAP core and the RPD. There are two types of DLM packets, ingress DLM
packet and egress DLM packet. The ingress DLM measures the latency between the CCAP core and the
ingress point in the RPD, and the egress DLM measures the latency between the CCAP core and the egress
point of the RPD. For now, only the ingress DLM is supported. Egress DLM will be supported in the future
if required.

How to Configure DLM

This section describes how to configure DLM on Cisco cBR-8.

Configuring DLM

To configure DLM, complete the following procedure. DLM is disabled by default, only enabled when
configured.
configure terminal
cable rpd
core-interface
network-delay dlm

Verifying DLM Configuration

To verify the DLM configuration, use the show cable rpd ip_address dlm command as shown in the example
below:
Router#
Load for five secs: 4%/1%; one minute: 4%; five minutes: 4%
Time source is NTP, 13:12:36.253 CST Sun Jan 1 2017
DEPI Latency Measurement (ticks) for 0000.bbaa.0002
Last Average DLM:
Average DLM (last 10 samples): 4990
Max DLM since system on:
Min DLM since system on:
Sample #
x------------x------------
0
1
2
3
4
5
6
7
8
9
The table below shows descriptions for the fields displayed by this command:
Cisco Remote PHY Shelf 7200 Software Configuration Guide for Cisco Remote PHY Shelf 7200 Software 1.1
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Cisco Remote PHY Shelf 7200 Start Up Configuration Guide for Cisco Remote PHY Shelf 7200 Software 1.1
name
interface_name
interval_in_seconds
show cable rpd 0000.bbaa.0002 dlm
Latency (usecs)
491
496
485
492
499
505
477
474
478
471
4993
5199
4800