Cli Management; Snmp Mib Management; Nmc-Rx Device Management System; Redundancy Features - Juniper E SERIES BROADBAND SERVICES ROUTERS 11.3.X - ERX HARDWARE GUIDE REV 26-9-2010 Hardware Manual

ERX 11.3.x Hardware Guide

CLI Management

SNMP MIB Management

NMC-RX Device Management System

Redundancy Features

SRP Modules

14
The CLI provides fully developed and automated configuration and status functionality
through a local RS-232 port, Telnet, or SSH via any reachable network. For a full discussion
of the CLI, see JunosE System Basics Configuration Guide, Chapter 2, Command-Line
Interface.
The system offers a complete SNMP interface for configuration, status, and alarm
reporting. The system supports both Standard and Enterprise MIBs (Management
Information Bases). The Juniper Networks E Series Enterprise MIB is ASN.1 notated for
easy importing into third-party SNMP management applications. For more information,
see JunosE System Basics Configuration Guide, Chapter 4, Configuring SNMP.
The NMC-RX application provides a global method of managing all routers, line modules,
and ports through a graphical user interface.
This section describes system redundancy features.
NOTE: This section applies to ERX7xx and ERX14xx models only. ERX310
routers contain one SRP module and therefore do not offer SRP module
redundancy.
ERX7xx and ERX14xx models use a 1:1 redundancy scheme for the SRP module. When
two SRP modules of the same type are installed in the chassis, one acts as a primary
(active) and the second as a redundant (standby) module. Both SRP modules share a
single SRP I/O module located in the rear of the chassis.
If the standby SRP module detects that the primary SRP module is not active (and
high-availability mode is not enabled), it reboots the system and takes control. If
high-availability mode has been enabled, automatic switchover occurs with near hitless
failover. If you upgrade software, you must copy the software to the redundant SRP and
reboot it. For information about configuring and managing SRP module redundancy, see
JunosE System Basics Configuration Guide, Chapter 6, Managing Modules.
After you install two SRP modules, the modules negotiate for the primary role. A number
of factors determine which module becomes the primary; however, preference is given
to the module in the lower-numbered slot. The SRP modules record their latest roles
and retain them the next time you switch on the system. For information about installing
SRP modules, see "Installing Modules" on page 31.
Copyright © 2010, Juniper Networks, Inc.