High Availability (Ha); High Availability On Chassis - Dell C9000 Series Networking Configuration Manual

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Table of Contents

High availability (HA) is a collection of features that preserves system continuity by maximizing uptime and

minimizing packet loss during system disruptions.

High Availability in a PE Stack

Online Insertion and Removal

Hitless Behavior

Graceful Restart

Software Resiliency

Control Plane Redundancy

High Availability on Chassis

The primary RPM (Route Processor Module) performs the routing, switching, and control operations while the

standby RPM monitors the primary RPM. If the primary RPM fails, the standby RPM can assume control of the

system without requiring a chassis reboot.

Although the C9010 switch can operate with one RPM, Dell Networking recommends two RPMs

for redundancy and to provide more bandwidth to each line card. One RPM provides 120 Gigabits of

switch fabric bandwidth to each line card; two RPMs provide 240 Gigabits of bandwidth to each line card.

The primary/standby role of an RPM is indicated by the mastership LED indicator. For the primary RPM, the

LED color is solid green. For the standby RPM, the LED color is solid amber.

For information about how to install RPM in a C9010 chassis, see the C9010 Getting Started Guide or C9010

Installation Guide.

FEFD is not an HA-aware protocol. Due to this, the protocol states and corresponding data are not

available on the standby system. While inter-operating with a third-party switch, the FEFD might move

into an unknown state on the new RPM after failover. Due to this, the line protocol might go down.

Dell Networking OS supports high availability (HA) on virtual link trunking (VLT). For information on

HA support on VLT, see the VLT Chapter.

High Availability (HA)