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Collaboration, Threshold monitoring – H3C Technologies H3C MSR 5600 User Manual

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

packets is configurable with 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.

Collaboration

NQA can collaborate with the track module to notify application modules of state or performance
changes so that the application modules can take predefined actions.

Figure 6 Collaboration

The following describes how a static route destined for 192.168.0.88 is monitored through collaboration:

1.

NQA monitors the reachability to 192.168.0.88.

2.

When 192.168.0.88 becomes unreachable, NQA notifies the track module of the change.

3.

The track module notifies the static routing module of the state change.

4.

The static routing module sets the static route as invalid according to a predefined action.

For more information about collaboration, see High Availability Configuration Guide.

Threshold monitoring

Threshold monitoring enables the NQA client to display results or send trap messages to the network

management station (NMS) when the performance metrics that an NQA operation gathers violate the

specified thresholds.

Table 1

describes the relationships between performance metrics and NQA operation types.

Application modules

Detection

module

Sends the

detection results

Sends the track

entry status

Track

Associates with an

NQA entry

Associates with a

track entry

VRRP

Static routing

Policy-based

routing

Interface backup

NQA

Traffic redirection

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