Health Monitoring - Cisco Nexus 7000 Series Configuration Manual

Remote integrated service engine for citrix netscaler appliances

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Cisco RISE Integration Overview

Health Monitoring

A RISE-enabled appliance can use its health monitoring feature to track and support server health by sending

out health probes to verify server responses.

The Cisco Nexus switch and the appliance also periodically send heartbeat packets to each other. If a critical

error occurs and health monitoring detects a service instance failure, or if the heartbeat is missed six times

successively, the RISE channel becomes nonoperational. The health monitoring timer is 30 seconds (sec).

Nondisruptive Maintenance

The nondisruptive maintenance feature of the Cisco Remote Integration Services Engine (RISE) maintains

the RISE configuration and runtime information on the Cisco Nexus Series switches during maintenance

processes, such as an in-service software upgrade (ISSU) or an in-service software downgrade (ISSD), instead

of being purged.

In-Service Software Upgrade

During an in-service software upgrade (ISSU), all RISE control channel communications are disabled. The

configuration state across all components is restored after the ISSU is completed. Data traffic is not affected

during an ISSU.

In-Service Software Downgrade

During an in-service software downgrade (ISSD), when you are downgrading from a Cisco Nexus Series

switch software image with RISE support to an image without RISE support, you are notified that you should

enter the no feature rise command before proceeding with the downgrade. This removes all of the RISE

configuration and runtime configuration from the switch.

ISSU Start and Stop Notifications

Cisco Nexus Series switch provides start and stop notifications to the RISE service appliance during an

in-service software upgrade (ISSU) or downgrade. This notification includes the hitful and hitless status of

the line card to which the appliance is connected.

When the RISE service appliance receives a start notification, the appliance stops all control plane

communication with the switch until after the switch sends a stop notification. The appliance uses the hitful

and hitless status in the start and stop notifications to determine whether the data plane is operational.

One-Arm Mode Deployment

The recommended RISE deployment is a one-arm mode NetScaler deployment with all of the appliance ports

bundled as a port channel connected to the Cisco Nexus Series switches.

Cisco Remote Integrated Service Engine for Citrix NetScaler Appliances and Cisco Nexus 7000 Series Switches

Health Monitoring

Configuration Guide

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