Global Roles And Local Roles In A Virtual Chassis; Role Name Format - Juniper EX9200 Features Manual

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Global Roles and Local Roles in a Virtual Chassis

Role Name Format

Copyright © 2017, Juniper Networks, Inc.
Chapter 7: Global Roles and Local Roles that Determine Mastership and Switchover Behavior
Virtual Chassis Components Overview
Global Roles and Local Roles in a Virtual Chassis on page 59
Switching the Global Master and Backup Roles in a Virtual Chassis Configuration on
page 61
In a Virtual Chassis configuration for MX Series 3D Universal Edge Routers or EX9200
switches, each of the two member devices and each of the two Routing Engines in each
member device has a distinct role. A global role defines the function of each member
device in the Virtual Chassis, and applies globally across the entire Virtual Chassis. A local
role defines the function of each Routing Engine in the member device, and applies locally
only to that member device.
Global roles change when you switch the Virtual Chassis mastership, and both global
roles and local roles change when you switch the Routing Engine mastership in one of
the member devices. In addition, the
preprovisioned configuration for a two-member MX Series or EX9200 Virtual Chassis,
applies in the context of split detection behavior.
This topic describes the global roles and local roles in a MX Series or EX9200 Virtual
Chassis so you can better understand how the Virtual Chassis behaves during a global
mastership switch, a local Routing Engine switchover, or when split detection is enabled.
Role Name Format on page 59
Global Role and Local Role Descriptions on page 60
The global and local role names in an MX Series or EX9200 Virtual Chassis use the
following format:
VC-GlobalRole<LocalRole>
where:
applies to the global function of the member device for the entire Virtual
GlobalRole
Chassis, and can be one of the following:
M —Virtual Chassis master device, also referred to as the protocol master.
—Virtual Chassis backup device, also referred to as the protocol backup.
B
—Virtual Chassis line-card device. The
L
preprovisioned configuration for a two-member Virtual Chassis. The
applies only in the context of split detection behavior.
(optional) applies to the function of the Routing Engine in the local member
LocalRole
device, and can be one of the following:
m —Master Routing Engine
global role, though not supported in a
line-card
role is not supported in the
line-card
role
line-card
59