Skip to Main Content
JUNOS High Availability
book

JUNOS High Availability

by James Sonderegger, Orin Blomberg, Kieran Milne, Senad Palislamovic
August 2009
Intermediate to advanced content levelIntermediate to advanced
690 pages
20h 14m
English
O'Reilly Media, Inc.
Content preview from JUNOS High Availability

Are You In or Out?

When you are developing a monitoring and management scheme, it is important to consider the method that the tools use to access the chassis. There are two distinct approaches to network management: in band and Out of Band (OoB).

In-Band Management

With in-band management, management traffic shares interfaces, links, and other resources with customer traffic. This method is more economical up front because you do not need to purchase additional equipment to support the management network. However, the risks associated with this form of management make it inappropriate for most networks with high availability requirements. The main issue is that when the network is having problems, the router may become inaccessible to management tools.

Out-of-Band Management

With OoB management, you independently provision interfaces and links for the management traffic so that no links are shared with customer traffic. This method requires a greater capital expense, but has a few advantages over in-band management:

  • Dedicated interfaces result in clean separation of management traffic from other forms of traffic, and simplify troubleshooting.

  • Problems impacting the production network do not automatically degrade the ability to manage the chassis, as is the case with in-band management.

OoB management essentially results in the creation of a second network for the sole purpose of monitoring the production network. Most administrators agree that this is by far the most reliable way to effectively ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Network Performance Baselining

Network Performance Baselining

Daniel Nassar
Cisco Catalyst QoS: Quality of Service in Campus Networks

Cisco Catalyst QoS: Quality of Service in Campus Networks

Mike Flannagan - CCIE® No. 7651, Richard Froom - CCIE No. 5102, Kevin Turek - CCIE No. 7284
Juniper Networks® Field Guide and Reference

Juniper Networks® Field Guide and Reference

Aviva Garrett, Gary Drenan, Cris Morris, Juniper Networks®
Juniper Networks® Reference Guide: JUNOS™ Routing, Configuration, and Architecture

Juniper Networks® Reference Guide: JUNOS™ Routing, Configuration, and Architecture

Thomas M. Thomas II, Doris Pavlichek, Lawrence H. Dwyer III, Rajah Chowbay, Wayne W. Downing III, James Sonderegger

Publisher Resources

ISBN: 9780596805449Errata Page