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Arista Warrior

Gary A. Donahue


Arista Warrior
by Gary A. Donahue
Copyright © 2013 Gary Donahue. All rights reserved.
Printed in the United States of America.
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Editors: Mike Loukides and Meghan Blanchette
Production Editor: Kristen Borg
Copyeditor: Absolute Services, Inc.

October 2012:

Proofreader: Kiel Van Horn
Indexer: Angela Howard
Cover Designer: Karen Montgomery
Interior Designer: David Futato
Illustrator: Robert Romano

First Edition

Revision History for the First Edition:

2012-10-03

First release

See for release details.
Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly
Media, Inc. Arista Warrior, the image of an African Harrier-Hawk, and related trade dress are trademarks
of O’Reilly Media, Inc.
Many of the designations used by manufacturers and sellers to distinguish their products are claimed as
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While every precaution has been taken in the preparation of this book, the publisher and authors assume
no responsibility for errors or omissions, or for damages resulting from the use of the information contained
herein.

ISBN: 978-1-449-31453-8
[LSI]


For my mother
Joyce A. Grier
November 18, 1931 – July 20, 2012
/>We all miss you.


vPC (Virtual Port Channel), 107
VRF (Virtual Routing and Forwarding), 386–
388
vrf definition command, 386
VRID (virtual router identifier), 156, 157

VRRP (Virtual Router Redundancy Protocol),
155–167
advertisement interval, 158–159
authentication for, 164
backup routers, 156, 160–162
configuration, 157–166
group number (VRID), 156, 157
groups, shutting down, 166
master router, 156, 160–162
preemption, 158–159, 162
priorities for groups, 161–162
serving multiple IP addresses, 163
tracing, 375
tracking other interfaces, 165–166
virtual IP (VIP), 156, 157, 163
virtual routers, 156
vrrp shut command, 166
VTY (virtual teletype terminal) interface, 186

W

website resources
Aboot commands, 224
Arista, 4, 43, 43, 378
Busybox, 225

400

|

Index

CloudVision, 342
EOS Central, 378
EOS extensions, 333
for this book, xv
sFlowTrend, 258
SQlite, 318
wget command, Aboot, 225, 234–235
write erase command, 96

X

XMPP (Extensible Messaging and Presence Pro
tocol), 341, 344–345
xmpp send command, 362
XmppCli command, 362

Z

Zero-Touch Provisioning (see ZTP)
zerotouch cancel command, 301
zerotouch disable command, 302
zerotouch-config file, 230, 304
ZTP (Zero-Touch Provisioning), 9, 299–301
availability of, 299
booting with, 305–310
cancelling, 301–302
configuration, 305–307
disabling, 302–305

enabling after disabling, 304


About the Author
Gary A. Donahue is a working consultant who has been in the computer industry for
28 years. Gary has worked as a programmer, mainframe administrator, Technical As
sistance Center engineer, network administrator, network designer, and consultant.
Gary has worked as the Director of Network Infrastructure for a national consulting
company and is the president of his own New Jersey consulting company: GAD Tech
nologies.

Colophon
The animal on the cover of Arista Warrior is the African Harrier-Hawk (Polyboroides
typus). It lives in sub-Saharan Africa and sometimes moves seasonally to West Africa.
It prefers forest and woodland environments that have some water nearby, and tends to
build its home out of sticks in a large gap in trees or in rocky crevices.
The African Harrier-Hawk is a medium-sized bird of prey that grows up to 65 cm in
length and has a wingspan of 160 cm. As a young bird, its body color is brown, but as
they mature, they become light grey. Other notable physical characteristics of this bird
are that the tips of its wings are black with a white stripe in the middle and its belly has
thin black and white stripes. It’s an effective hunter not only because of its size, but also
because of its double-jointed legs, which it uses to take hold of its prey and to climb. It
tends to eat small mammals, the eggs of small birds, chicks, reptiles, frogs, and some
times oil palm fruit.
Typically a silent bird, an adult African Harrier-Hawk has a weak call. It whistles sueeeee-ooo or suee-suee, and when near its nest it gives off a high-voiced wheep-wheepwheep. The young in the nest, on the other hand, tend to give off a rapid ki-ki-ki-ki-ki
sound.
The cover image is from Wood’s Animate Creation. The cover font is Adobe ITC Gara
mond. The text font is Minion Pro by Robert Slimbach; the heading font is Myriad Pro
by Robert Slimbach and Carol Twombly; and the code font is UbuntuMono by Dalton
Maag.