Health Monitoring - Cisco Nexus 7000 Series Configuration Manual

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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