HP JD320B User Manual

2.
The destination affixes a time stamp to each packet that it receives, and then sends the packet back
to the source.
3. Upon receiving the response, the source calculates the delay jitter, which reflects network
performance. Delay refers to the amount of time it takes a packet to be transmitted from source to
destination or from destination to source. Delay jitter is the delay variation over time.
Configuration prerequisites
UDP jitter tests require cooperation between the NQA server and the NQA client. Before you start UDP
jitter tests, configure UDP listening services on the NQA server. For more information about UDP listening
service configuration, see “Configuring the NQA server.”
Configuring UDP jitter tests
Follow these steps to configure UDP jitter tests:
To do… Use the command… Remarks
Enter system view system-view —
Enter NQA test group view
nqa entry admin-name
operation-tag
—
Configure the test type as UDP
jitter, and enter test type view
type udp-jitter Required
Configure the destination address
of UDP packets
destination ip ip-address
Required
By default, no destination IP
address is configured.
The destination IP address must be
the same as that of the listening
service on the NQA server.
Configure the destination port of
UDP packets
destination port port-number
Required
By default, no destination port
number is configured.
The destination port must be the
same as that of the listening service
on the NQA server.
Specify the source port number of
UDP packets
source port port-number
Optional
By default, no source port number
is specified.
Configure the size of the data field
in each UDP packet
data-size size
Optional
100 bytes by default.
Configure the string to be filled in
the data field of each probe packet
data-fill string
Optional
By default, the string is the
hexadecimal number
00010203040506070809.
Configure the number of probe
packets to be sent during each UDP
jitter probe operation
probe packet-number
packet-number
Optional
10 by default.
Configure the interval for sending
probe packets during each UDP
jitter probe operation
probe packet-interval
packet-interval
Optional
20 milliseconds by default.
18

HP JD320B Specifications

General

Model	JD320B
Category	Switch
Switching Capacity	56 Gbps
Forwarding Rate	41.7 Mpps
Power Supply	Internal
Ports	24 x 10/100/1000 + 4 x SFP
Form Factor	Rack-mountable
MAC Address Table Size	16, 000 entries
Jumbo Frame Support	Yes
VLAN Support	Yes
Quality of Service (QoS)	Yes

Summary

Legal and notice information

System maintenance and debugging

Ping

Verifies device reachability and examines network connectivity using ICMP.

Tracert

Traces Layer 3 devices in IP packet delivery to identify network availability.

System debugging

Provides debugging functions and information to help diagnose system errors.

NQA configuration

NQA overview

Explains Network Quality Analyzer (NQA) for testing network performance and service quality.

NQA configuration task list

Outlines the tasks required to enable NQA server and client for tests.

Configuring the NQA server

Steps to configure the NQA server for TCP, UDP echo, UDP jitter, and voice tests.

Creating an NQA test group

Process for creating an NQA test group and configuring test parameters.

Displaying and maintaining NQA

Commands for viewing NQA history, results, statistics, and server status.

NTP configuration

NTP overview

Defines Network Time Protocol (NTP) for synchronizing distributed time servers and clients.

How NTP works

Explains the basic workflow of NTP for time synchronization between devices.

Operation modes of NTP

Details NTP operation modes: client/server, symmetric peers, broadcast, and multicast.

NTP configuration task list

Lists the essential tasks for configuring NTP on network devices.

PoE configuration

PoE overview

Introduction to Power over Ethernet (PoE) and its components.

PoE configuration task list

Lists tasks for configuring PoE interfaces, detecting PDs, and power management.

Enabling PoE for a PoE interface

Steps to enable the PoE function on a specific interface.

Displaying and maintaining PoE

Commands to display PoE device information and interface power states.

SNMP configuration

SNMP overview

Introduces SNMP as a protocol for network management and monitoring.

SNMP protocol versions

Describes SNMPv1, SNMPv2c, and SNMPv3 protocol versions and their features.

SNMP configuration task list

Outlines the tasks for configuring SNMP, including basic parameters and logging.

Displaying and maintaining SNMP

Commands for monitoring SNMP agent status, community information, and MIB views.

RMON configuration

RMON overview

Introduces Remote Monitoring (RMON) for traffic analysis and device management.

Working mechanism

Explains how RMON monitors traffic using probes and agents.

RMON groups

Details RMON groups: statistics, history, event, alarm, and private alarm.

Displaying and maintaining RMON

Commands for viewing RMON statistics, history, and alarm configurations.

Cluster management configuration

Cluster management overview

Explains cluster management for large-scale distributed device management.

Cluster configuration task list

Lists tasks for configuring cluster roles, communication, and functions.

Establishing a cluster

Steps for manually or automatically establishing a cluster.

Displaying and maintaining cluster management

Commands for displaying NDP, NTDP, cluster, blacklist, and member information.

Port mirroring configuration

Introduction to port mirroring

Defines port mirroring for packet analysis and monitoring traffic.

Local port mirroring

Details configuring local mirroring groups with ports, CPUs, and monitor ports.

Layer 2 remote port mirroring

Describes configuring remote mirroring groups for source and destination devices.

Displaying and maintaining port mirroring

Commands to display port mirroring group configurations.

Traffic mirroring configuration

Traffic mirroring overview

Explains traffic mirroring for packet analysis and monitoring.

Configuring traffic mirroring

Steps to configure traffic mirroring to an interface or the CPU.

Mirroring traffic to an interface

Process for mirroring traffic to a specific destination interface using classifiers and behaviors.

Displaying and maintaining traffic mirroring

Commands to display traffic behavior and QoS policy configurations.

Stack configuration

Stack configuration overview

Introduces stack configuration for managing network devices as a whole.

Establishing a stack

Steps to create a stack by configuring master and slave devices.

Stack configuration task list

Lists tasks for configuring stack master, ports, and slave devices.

Displaying and maintaining stack configuration

Commands to view stack member information and verify configuration.

Information center configuration

Information center overview

Explains the information center's role in managing and classifying system information.

Levels of system information

Details the eight severity levels used for classifying system information.

Outputting system information to the console

Steps to configure the system to output information to the console.

Saving security logs into the security log file

Feature to save security logs into a dedicated file for easier management.

Displaying and maintaining information center

Commands for displaying information channels, output destinations, and log buffers.

PoE configuration

PoE overview

Introduction to Power over Ethernet (PoE) and its components.

PoE configuration task list

Lists tasks for configuring PoE interfaces, detecting PDs, and power management.

Enabling PoE for a PoE interface

Steps to enable the PoE function on a specific interface.

Displaying and maintaining PoE

Commands to display PoE device information and interface power states.