More documents

Recommendations

Info

Network Warrior, Second Edition by Gary A. Donahue Copyright © 2011 Gary Donahue. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://my.safaribooksonline.com). For more information, contact our corporate/institutional sales department: (800) 998-9938 or corporate@oreilly.com. Editor: Production Editor: Copyeditor: Proofreader: Production Services: Mike Loukides Adam Zaremba Amy Thomson Rachel Monaghan Molly Sharp Indexer: Cover Designer: Interior Designer: Illustrator: Lucie Haskins Karen Montgomery David Futato Robert Romano Printing History: June 2007: May 2011: First Edition. Second Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. Network Warrior, the image of a German boarhound, 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 trademarks. Where those designations appear in this book, and O’Reilly Media, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps. While every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. ISBN: 978-1-449-38786-0 [LSI] 1305147383
Table of Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii 1. What Is a Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. Hubs and Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Hubs 5 Switches 10 Switch Types 14 Planning a Chassis-Based Switch Installation 16 3. Autonegotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 What Is Autonegotiation 19 How Autonegotiation Works 20 When Autonegotiation Fails 21 Autonegotiation Best Practices 23 Configuring Autonegotiation 23 4. VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Connecting VLANs 25 Configuring VLANs 29 CatOS 29 IOS Using VLAN Database 31 IOS Using Global Commands 33 Nexus and NX-OS 35 5. Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 How Trunks Work 38 ISL 39 802.1Q 39 Which Protocol to Use 40 Trunk Negotiation 40 v
Page 3: Network Warrior
Page 8 and 9: Configuring Trunks 42 IOS 42 CatOS
Page 10 and 11: Nexus and HSRP 189 GLBP 189 Object
Page 12 and 13: Bipolar Violation 362 CRC6 363 Erro
Page 14 and 15: Configuring Contexts 486 Interfaces
Page 16 and 17: Nonpriority Queue Too Large 624 Def
Page 18 and 19: Environmental 729 Leadership and Me
Page 20 and 21: I faced a very tough decision when
Page 22 and 23: Using Code Examples This book is he
Page 24 and 25: would not be published today. Her d
Page 27 and 28: CHAPTER 1 What Is a Network Before
Page 29: WAN A WAN is a network that is used
Page 32 and 33: I was surprised to learn that there
Page 34 and 35: equired. Collisions are also limite
Page 36 and 37: Hubs have a lot of drawbacks, and m
Page 38 and 39: destination MAC address and checks
Page 40 and 41: Switch Types Cisco switches can be
Page 42 and 43: Planning a Chassis-Based Switch Ins
Page 44 and 45: Installing and removing modules Mod
Page 46 and 47: How Autonegotiation Works First, le
Page 48 and 49: Figure 3-2. Full duplex frames cons
Page 50 and 51: Once you’ve set the speed, you ca
Page 52 and 53: Figure 4-1. VLANs on a switch Figur
Page 54 and 55: Another way to route between VLANs
Page 56 and 57:
There are a lot of options when cre
Page 58 and 59:
To create a VLAN, give the vlan com
Page 60 and 61:
1004 fddinet-default act/unsup 1005
Page 62 and 63:
This automatically puts us into int
Page 64 and 65:
How Trunks Work Figure 5-2 is a vis
Page 66 and 67:
Which Protocol to Use Why are there
Page 68 and 69:
The default mode for most Cisco swi
Page 70 and 71:
The output of show interface trunk
Page 72 and 73:
Switch-2# (enable)clear trunk 3/5 1
Page 75 and 76:
CHAPTER 6 VLAN Trunking Protocol In
Page 77 and 78:
Switches with mismatched VTP domain
Page 79 and 80:
Figure 6-3. Broadcast sent to all s
Page 81 and 82:
In larger, more dynamic environment
Page 83 and 84:
3750-IOS(config)#vtp mode client S
Page 85 and 86:
IOS VTP pruning is enabled with the
Page 87:
NX-OS NX-OS does not support VTP pr
Page 90 and 91:
Figure 7-1. EtherChannel on IOS and
Page 92 and 93:
• The source and destination port
Page 94 and 95:
The only solutions for this problem
Page 96 and 97:
Switch-2-CatOS: (enable)sho channel
Page 98 and 99:
Port-channel: Po1 ------------ Age
Page 100 and 101:
Input flow-control is off, output f
Page 102 and 103:
Figure 7-6. VSS MEC versus Nexus vP
Page 104 and 105:
Technically, you could bond port ch
Page 106 and 107:
5 Po14 up success success 3-7,9 6 P
Page 108 and 109:
The computer on Switch A sends out
Page 110 and 111:
The numbers on the left side of the
Page 112 and 113:
0 input packets with dribble condit
Page 114 and 115:
Preventing Loops with Spanning Tree
Page 116 and 117:
Figure 8-4. BPDU format Every port
Page 118 and 119:
Root ID Priority 24577 Address 0009
Page 120 and 121:
Here is the same command as seen on
Page 122 and 123:
To disable PortFast on an interface
Page 124 and 125:
UplinkFast should be configured onl
Page 126 and 127:
If BackboneFast is used, it must be
Page 128 and 129:
Figure 8-9. Unidirectional link pro
Page 130 and 131:
Designing to Prevent Spanning Tree
Page 132 and 133:
outer. Router is the term I will ge
Page 134 and 135:
When a packet arrives at a router,
Page 136 and 137:
Gateway of last resort is 11.0.0.1
Page 138 and 139:
Subnet Subnets are indented under t
Page 140 and 141:
Supernet (Group of Major Networks)
Page 142 and 143:
Now I’ll assign a different inter
Page 145 and 146:
CHAPTER 10 Routing Protocols A rout
Page 147 and 148:
There may be more than one type of
Page 149 and 150:
Metrics and Protocol Types The job
Page 151 and 152:
Figure 10-6. OSPF uses bandwidth to
Page 153 and 154:
Looking at Table 10-1, you can see
Page 155 and 156:
is learned on one permanent virtual
Page 157 and 158:
By default, no interfaces are inclu
Page 159 and 160:
• Updates in RIPv2 are sent using
Page 161 and 162:
As with all IGPs, you list the inte
Page 163 and 164:
D 192.168.3.0/24 [90/2195456] via 1
Page 165 and 166:
Autonomous System External (ASE) LS
Page 167 and 168:
outers are assumed to be connected
Page 169 and 170:
OSPF Router with ID (192.168.1.116)
Page 171 and 172:
Dampening enabled. 2687 history pat
Page 173 and 174:
CHAPTER 11 Redistribution Redistrib
Page 175 and 176:
Regardless of which protocol you re
Page 177 and 178:
Gateway of last resort is not set C
Page 179 and 180:
Here are the arguments required for
Page 181 and 182:
If you do not specify a default met
Page 183 and 184:
outer ospf 100 redistribute eigrp 1
Page 185 and 186:
autonomous systems using the same r
Page 187 and 188:
P 10.10.10.0/24, 1 successors, FD i
Page 189 and 190:
Gateway of last resort is not set 5
Page 191 and 192:
Gateway of last resort is not set 5
Page 193 and 194:
CHAPTER 12 Tunnels A tunnel is a me
Page 195 and 196:
Figure 12-1. Simple network Given t
Page 197 and 198:
Keepalive not set Tunnel source 10.
Page 199 and 200:
To prove that the tunnel is running
Page 201 and 202:
Router D: interface Loopback0 ip ad
Page 203 and 204:
down the tunnel. Unfortunately, it
Page 205:
PIX firewalls also support the keyw
Page 208 and 209:
The details of Cisco’s HSRP can b
Page 210 and 211:
To enable this behavior, you must c
Page 212 and 213:
On each router, we have added the s
Page 214 and 215:
Figure 13-5. HSRP limitations Metro
Page 216 and 217:
of 1,024 GLBP groups per router int
Page 218 and 219:
Weighting is used both for load dis
Page 220 and 221:
Another nice GLBP command is show g
Page 222 and 223:
If we wanted GLBP to enable the for
Page 224 and 225:
metric route-type tag Match metric
Page 226 and 227:
We used to be able to do AND operat
Page 228 and 229:
simply provides the best path to th
Page 230 and 231:
Policy routing overrides the routin
Page 233 and 234:
CHAPTER 15 Switching Algorithms in
Page 235 and 236:
Process Switching The original meth
Page 237 and 238:
a. Is the destination reachable b.
Page 239 and 240:
The drawbacks of this implementatio
Page 241 and 242:
The term trie comes from the word r
Page 243 and 244:
IP fast switching on the same inter
Page 245 and 246:
CEF 30 ****************************
Page 247 and 248:
CHAPTER 16 Multilayer Switches Swit
Page 249 and 250:
Ethernet ports on routers tend to b
Page 251 and 252:
Queueing strategy: fifo Output queu
Page 253 and 254:
Another way to get to the MSFC is w
Page 255:
A quick word is in order about choo
Page 258 and 259:
Figure 17-1. Individual versus inte
Page 260 and 261:
Because it controls the crossbar fa
Page 262 and 263:
Figure 17-3. Cisco 6509 backplanes
Page 264 and 265:
the standard 6500 chassis (40 Gbps
Page 266 and 267:
Supervisor-720 This model represent
Page 268 and 269:
etween the different buses. Specifi
Page 270 and 271:
CSM for load-balancing needs, but t
Page 272 and 273:
Interface Vlan30 "inside", is up, l
Page 274 and 275:
Intrusion Detection System modules.
Page 276 and 277:
MSFC for Layer-3 functionality, the
Page 278 and 279:
Queueing strategy: fifo Output queu
Page 280 and 281:
Figure 17-9. VSS layout including P
Page 282 and 283:
If you change your mind, just negat
Page 284 and 285:
We can see the status of the VSS cl
Page 286 and 287:
activity interval and global aging
Page 288 and 289:
To reboot only the active switch an
Page 291 and 292:
CHAPTER 18 Cisco Nexus At the time
Page 293 and 294:
6509 and 6509E had side-to-side air
Page 295 and 296:
ports. When mounting switches in ra
Page 297 and 298:
Figure 18-6. Nexus 5010 with power
Page 299 and 300:
Figure 18-8. Nexus 2148 FEX with po
Page 301 and 302:
dhcp Enable/Disable DHCP Snooping d
Page 303 and 304:
No more write memory Cisco has been
Page 305 and 306:
on commands with big outputs, like
Page 307 and 308:
Scalability The Nexus 7000 chassis
Page 309 and 310:
The downside is that it makes the c
Page 311 and 312:
Next, I’ll allocate all 32 ports
Page 313 and 314:
Once I’m connected to the VDC, it
Page 315 and 316:
NX-7K-1-Cozy(config-if)# rate-mode
Page 317 and 318:
Figure 18-15. FEXs attached in cros
Page 319 and 320:
The FEX associate command is what d
Page 321 and 322:
Figure 18-17. Traditional spanning
Page 323 and 324:
And the vPC peer keepalive: NX-7K-2
Page 325 and 326:
Port Mode 1 access access Native Vl
Page 327 and 328:
Imagine two Nexus 5010s, with large
Page 329 and 330:
NX-5K-2(config-sync-sp)# sync-peers
Page 331 and 332:
Here it says that it verified local
Page 333 and 334:
spanning-tree port type edge trunk
Page 335 and 336:
NX-5K-1# config sync NX-5K-1(config
Page 337 and 338:
Name: GAD !Command: Checkpoint cmd
Page 339 and 340:
tell it that we’re using the mana
Page 341 and 342:
Install is in progress, please wait
Page 343 and 344:
CHAPTER 19 Catalyst 3750 Features T
Page 345 and 346:
As it says, I need to reboot, so I
Page 347 and 348:
You create macros are created with
Page 349 and 350:
An easier way to see where macros h
Page 351 and 352:
Storm Control Storm control prevent
Page 353 and 354:
Additionally, the latest releases o
Page 355 and 356:
that this is measured every 200 ms,
Page 357 and 358:
Protect When a violation occurs, th
Page 359 and 360:
3750(config)#monitor session 1 des
Page 361 and 362:
3750(config)#no monitor session S
Page 363 and 364:
command. The options are cos and tr
Page 365 and 366:
The interface’s configuration wil
Page 367 and 368:
CHAPTER 20 Telecom Nomenclature The
Page 369 and 370:
Digital refers to a signal that has
Page 371 and 372:
CSU/DSU CSU stands for Channel Serv
Page 373 and 374:
Designator Transmission rate Voice
Page 375 and 376:
Figure 20-4. Different propagation
Page 377 and 378:
POTS POTS is short for the clever p
Page 379:
T-carrier T-carrier is the generic
Page 382 and 383:
T1s are full-duplex links. Voice T1
Page 384 and 385:
This allows for some interesting er
Page 386 and 387:
Figure 21-4. One-channel sample T1s
Page 388 and 389:
Performance Monitoring CSU/DSUs con
Page 390 and 391:
though again, they are described fo
Page 392 and 393:
Watch out for assumptions. Router D
Page 394 and 395:
Not all models of CSU/DSU have all
Page 396 and 397:
Figure 21-13. Integrated CSU/DSU lo
Page 398 and 399:
Hardware revision is 0.112, Softwar
Page 400 and 401:
(ninety-six 15-minute intervals), a
Page 402 and 403:
clocking, framing, and encoding, wh
Page 404 and 405:
sends a FEOOF signal back to the so
Page 406 and 407:
You show the status of the interfac
Page 408 and 409:
However, because this is a channeli
Page 410 and 411:
Here, we can see the individual ser
Page 413 and 414:
CHAPTER 23 Frame Relay Frame Relay
Page 415 and 416:
dell-see). These DLCIs (and your da
Page 417 and 418:
Figure 23-4. Frame Relay CIR and DE
Page 419 and 420:
Figure 23-7. Six-node fully meshed
Page 421 and 422:
ansi q933a Congestion Avoidance in
Page 423 and 424:
out pkts dropped 0 out bytes droppe
Page 425 and 426:
Router-B(config)#int s0/0 Router-B(
Page 427 and 428:
Local IP addresses mapped to remote
Page 429 and 430:
Figure 23-12. Three-node Frame Rela
Page 431 and 432:
00:33:05: Serial0/0(in): Status, my
Page 433:
Serial0/0.102 (up): point-to-point
Page 436 and 437:
Because entire packets are prefixed
Page 438 and 439:
So how do the branches communicate
Page 440 and 441:
encapsulation ppp auto qos voip tru
Page 442 and 443:
Wildcard Masks Wildcard masks (also
Page 444 and 445:
Reflexive access lists, covered lat
Page 446 and 447:
Here’s an actual example from a P
Page 448 and 449:
access-list Inbound permit icmp any
Page 450 and 451:
access-list Inbound line 8 permit i
Page 452 and 453:
Or using named access lists: ip acc
Page 454 and 455:
able to communicate only with the d
Page 456 and 457:
to contain a permit appletalk inste
Page 458 and 459:
Figure 25-4. Simple access list app
Page 460 and 461:
Reflexive access lists can only be
Page 463 and 464:
CHAPTER 26 Authentication in Cisco
Page 465 and 466:
NX-OS switches work a little differ
Page 467 and 468:
If you specify a command or menu th
Page 469 and 470:
e used when minimal security is des
Page 471 and 472:
CHAP CHAP is more secure than PAP b
Page 473 and 474:
Two-way authentication. As with PAP
Page 475 and 476:
Hostname ISP ! username Bob-01 pass
Page 477 and 478:
Nexus switches seem to be more gear
Page 479 and 480:
Creating Method Lists A method list
Page 481 and 482:
If you’re relying on external ser
Page 483:
interface Serial0/0/0:0 no ip addre
Page 486 and 487:
high level of security, but like yo
Page 488 and 489:
term referring to a zone created be
Page 490 and 491:
Figure 27-2. DMZ connecting to a ve
Page 492 and 493:
Figure 27-4 shows a simplified layo
Page 495 and 496:
CHAPTER 28 ASA Firewall Configurati
Page 497 and 498:
All model ASAs can be configured to
Page 499 and 500:
In multicontext mode, interface cha
Page 501 and 502:
Object Groups Object groups allow a
Page 503 and 504:
access-list In line 1 extended perm
Page 505 and 506:
Different inspects are enabled by d
Page 507 and 508:
Figure 28-4. Context types within a
Page 509 and 510:
Figure 28-6. Another no-shared-inte
Page 511 and 512:
Figure 28-9. Multiple contexts shar
Page 513 and 514:
We now find ourselves in the system
Page 515 and 516:
Type help or '' for a list of avail
Page 517 and 518:
Maximum VLANs : 200 Inside Hosts :
Page 519 and 520:
For failover to work, each ASA must
Page 521 and 522:
interface GigabitEthernet0/3 descri
Page 523 and 524:
VPN CTCP upd 0 0 0 0 VPN SDI upd 0
Page 525 and 526:
Be careful of this method of operat
Page 527 and 528:
Group 2 State: Standby Ready Active
Page 529 and 530:
global (outside) 1 interface nat (i
Page 531 and 532:
Normally, the static command includ
Page 533 and 534:
3191 bytes copied in 3.280 secs (10
Page 535 and 536:
filters. For example, if you only w
Page 537 and 538:
CHAPTER 29 Wireless Wireless networ
Page 539 and 540:
consumer equipment will get nowhere
Page 541 and 542:
TKIP The Temporal Key Integrity Pro
Page 543 and 544:
The authentication open command tel
Page 545 and 546:
Cisco-WAP(config)#int g0 Cisco-WAP(
Page 547:
Troubleshooting Here are some usefu
Page 550 and 551:
See Chapter 21 for more information
Page 552 and 553:
equipment using slow-speed links, b
Page 554 and 555:
hairpinning is generally frowned up
Page 556 and 557:
Common Issues with VoIP When dealin
Page 558 and 559:
Small-Office VoIP Example In a Cisc
Page 560 and 561:
SW-3750(config-vlan)#vlan 901 SW-37
Page 562 and 563:
mls qos trust device cisco-phone ml
Page 564 and 565:
the right code, which minimizes pro
Page 566 and 567:
Next, we’ll configure the phone s
Page 568 and 569:
R1-PBX(config-telephony)#transfer-s
Page 570 and 571:
Figure 30-4. Cisco 7970 phone; the
Page 572 and 573:
I’m assigning the line number 111
Page 574 and 575:
Different separator options may be
Page 576 and 577:
To make the button work on the Cisc
Page 578 and 579:
peers to send our calls there. Sinc
Page 580 and 581:
If a call is destined for the numbe
Page 582 and 583:
ACK Acknowledge a SIP message. CANC
Page 584 and 585:
Key: 123456789 Trunk2 Number: 97355
Page 586 and 587:
Here’s the rub. It only works gre
Page 588 and 589:
sip-ua credentials number 608222222
Page 590 and 591:
ephone-dn 22 dual-line number 97355
Page 592 and 593:
that replaces anything that could a
Page 594 and 595:
TFTP paging-dn 20 Preferred Codec:
Page 596 and 597:
R1-PBX#sho dialplan number 92111111
Page 598 and 599:
From: ;tag=383B4-0 To: Date: Thu,
Page 600 and 601:
Figure 31-1. Simple two-building ne
Page 602 and 603:
Assuming a FIFO (first in, first ou
Page 604 and 605:
Figure 31-4. Simple two-building Vo
Page 606 and 607:
ecame apparent as users began to wa
Page 608 and 609:
WFQ WFQ is the default queuing mech
Page 610 and 611:
Figure 31-8. Faster links are not b
Page 612 and 613:
Common QoS Misconceptions There are
Page 614 and 615:
Of course, QoS not resolving a need
Page 616 and 617:
Record who is using each protocol a
Page 618 and 619:
Removing the placeholder, we now ha
Page 620 and 621:
• Voice control—30 Kbps • Tel
Page 622 and 623:
Policy Maps Now that we have our cl
Page 624 and 625:
Our final configuration is as follo
Page 626 and 627:
Of course, you would need to have a
Page 628 and 629:
0 packets, 0 bytes 5 minute rate 0
Page 630 and 631:
Traffic-shaping terminology The fol
Page 632 and 633:
In the Ethernet handoff example, I
Page 634 and 635:
Internet address is 10.10.10.2/30 M
Page 636 and 637:
819 input errors, 559 CRC, 227 fram
Page 638 and 639:
more than 1 out of every 10 packets
Page 641 and 642:
CHAPTER 34 The Converged Network In
Page 643 and 644:
The HTTP class references access li
Page 645 and 646:
Class-map: Voice-RTP (match-any) 19
Page 647 and 648:
5 minute offered rate 255000 bps, d
Page 649 and 650:
The drop rate in the first bold lin
Page 651 and 652:
which can result in drops in lower-
Page 653 and 654:
CHAPTER 35 Designing Networks There
Page 655 and 656:
• Each user will have one phone s
Page 657 and 658:
Another requirement that engineers
Page 659 and 660:
If you have planned your network to
Page 661 and 662:
Figure 35-6. Bay face layout Just b
Page 663 and 664:
Keep it simple Take a look at any o
Page 665 and 666:
Network Designs I can’t tell you
Page 667 and 668:
stadium. The stadium was divided in
Page 669 and 670:
• User VLANs Planning ahead of ti
Page 671 and 672:
Figure 35-12. Bridged three-tier ec
Page 673 and 674:
• Which interface is primary •
Page 675 and 676:
CHAPTER 36 IP Design When a network
Page 677 and 678:
the same network, so the packet wil
Page 679 and 680:
Figure 36-2. Classful subnets of a
Page 681 and 682:
Figure 36-4 shows how a single rout
Page 683 and 684:
To make things even more interestin
Page 685 and 686:
she would likely allocate them in t
Page 687 and 688:
Figure 36-7. Divide-by-half IP subn
Page 689 and 690:
IP Subnetting Made Easy IP subnetti
Page 691 and 692:
Figure 36-11. Possible subnet octet
Page 693 and 694:
Figure 36-15. Subnet worksheet step
Page 695:
Figure 36-17. Horizontal format of
Page 698 and 699:
If you’re not familiar with scien
Page 700 and 701:
hexadecimal numbers separated by co
Page 702 and 703:
Loopback address The loopback addre
Page 704 and 705:
The following guidelines may be use
Page 706 and 707:
To see the automatically configured
Page 708 and 709:
The interface now has a link-local
Page 710 and 711:
Success! Notice how we didn’t hav
Page 712 and 713:
ND reachable time is 30000 millisec
Page 714 and 715:
R4: L FF00::/8 [0/0] via ::, Null0
Page 716 and 717:
60 cycles per second (60 Hz). 1080p
Page 718 and 719:
The company ended up losing an enti
Page 720 and 721:
~152.1.58.124 .INIT. 16 - 64 0 0.00
Page 722 and 723:
=128.118.46.3 0.0.0.0 16 64 0 0.000
Page 724 and 725:
configuration that caused the route
Page 726 and 727:
ut the cables were not tied togethe
Page 728 and 729:
everse the change, but make sure yo
Page 730 and 731:
Escalate If you can’t figure out
Page 732 and 733:
ead this, groaning, “I hate polit
Page 734 and 735:
If your company is short on cash, y
Page 736 and 737:
• Increase reliability Unless you
Page 738 and 739:
On the other hand, devices that are
Page 741 and 742:
CHAPTER 41 Avoiding Frustration I
Page 743 and 744:
managers usually wake up, at which
Page 745 and 746:
tension with my statement. The focu
Page 747 and 748:
Understand the shortcomings of your
Page 749 and 750:
What about upgrading something like
Page 751 and 752:
To increase simplicity I’m a big
Page 753 and 754:
of you Do you think you’ll be the
Page 755 and 756:
Tell people that you’ve done some
Page 757 and 758:
Index Symbols 802.xx standards (see
Page 759 and 760:
computer jerks and, 727-730 selling
Page 761 and 762:
trunk negotiation, 40 types of, 14
Page 763 and 764:
Digital Signal Processors (DSPs), 5
Page 765 and 766:
floating static route, 119 Foreign
Page 767 and 768:
multicontext ASAs and, 482-484 PAT
Page 769 and 770:
login method, 454 loopback addresse
Page 771 and 772:
(see also NX-OS; specific Nexus dev
Page 773 and 774:
plain-old telephone service (POTS),
Page 775 and 776:
RFC 2281, 181, 184 RFC 2373, 676 RF
Page 777 and 778:
show fabric switching-mode command,
Page 779 and 780:
stacking GBICs, 317 stacking switch
Page 781 and 782:
translation-profile command, 564 tr
Page 783:
vtp password command, 57 VTP passwo
show all

Table of Contents

Create successful ePaper yourself

Delete template?

Save as template?