4000 Router Series Network Management and Monitoring Command Reference

Views

DHCP operation view, DNS operation view, DLSw operation view, FTP operation view, HTTP operation

view, ICMP echo operation view, SNMP operation view, TCP operation, UDP echo operation view

Predefined user roles

network-admin

Parameters

times: Specifies the probe times in the range of 1 to 15.

Usage guidelines

The following describes how different types of NQA operations operate:

• A TCP or DLSw operation sets up a connection.

• A UDP jitter or voice operation sends a number of probe packets. The number of probe packets is

specified by the probe packet-number command.

• An FTP, HTTP, DHCP, or DNS operation uploads or downloads a file, gets a web page, gets an IP

address through DHCP, or translates a domain name to an IP address.

• An ICMP echo or UDP echo operation sends an ICMP echo request or a UDP packet.

• An SNMP operation sends one SNMPv1 packet, one SNMPv2c packet, and one SNMPv3 packet.

• A path jitter operation is accomplished in the following steps:

a. The operation uses tracert to obtain the path from the NQA client to the destination. At

maximum of 64 hops can be detected.

b. The NQA client sends ICMP echo requests to each hop along the path. The number of ICMP

echo requests is configurable with the probe packet-number command.

If an operation is to perform multiple probes, the system starts the next probe when it receives responses

to packets sent in the first probe, or when the probe timeout time expires.

This command is not available for the voice, UDP jitter, and path jitter operation. Each of these

operations performs only one probe.

Examples

# Configure the ICMP echo operation to perform 10 probes.

<Sysname> system-view

[Sysname] nqa entry admin test

[Sysname-nqa-admin-test] type icmp-echo

[Sysname-nqa-admin-test-icmp-echo] probe count 10

probe packet-interval

Use probe packet-interval to configure the interval for sending packets in the probe.

Use undo probe packet-interval to restore the default.

Syntax

probe packet-interval packet-interval

undo probe packet-interval

Default

The interval is 20 milliseconds.