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ssh command, 3, 89 SSM (Source-Specific Multicast), 577, 605–607 start command, 3 start shell command, 89, 90 startup keyword, 137 statements checking configuration syntax, 21, 22 configuration mode, 4 permissions and, 93 semicolon and, 12 static routes adding BGP community to routes, 468 creating, 263, 264 default routing policy actions, 286 forwarding and, 562 IS-IS and, 368–371 redistributing in OSPF, 405, 406 static RP, 584 status command, 18 stratum 1 clock checking NTP status, 190 primary NTP server, 181 synchronizing time and, 186, 187 stratum 2 clock, 181 stratum 3 clock, 181, 234, 240 strict mode (unicast RPF), 267 strong passwords changing plain-text passwords, 85 strategies for, 73, 74 Structure of Management Information (SMI), 130, 132, 133 stub areas (OSPF) defined, 383 NSSAs and, 384 setting up, 397–399 virtual links and, 384 su root command, 89 subinterfaces (see logical interfaces) subnetwork mask, 248 super frame (SF) framing mode, 226 superusers login class permissions, 89, 90 permission bits for, 91, 92 root user and, 13 support information, 61 suppression threshold, 459, 460, 463 swatch tool, 175 switching tables, 496 SYN packets, 330 synchronizing time periodically, 185–187 routers, 184, 185, 189 system time, 181 Synchronous Digital Hierarchy (SDH) standard, 233 Synchronous Optical Network (see SONET) syntax, checking, 21, 22 sysContact object, 135 sysDescription object, 135 sysLocation object, 135 syslog action, 306 SYSLOG facility code, 163 syslog utility (Unix), 162, 163, 174 syslog.conf file, 175 syslogd utility, 162, 173–175 syslog-ng program, 175 sysName object, 135 System and Switch Board (SSB), 146 system identifier (IS-IS), 350, 353 system log (syslog) BGP traffic problems, 478 facilities and, 162 formats, 164 logging traffic, 317 restricting advertised routes, 449 severity levels and, 162–164 TCP session problems and, 436, 438 time synchronization and, 187 timestamps and, 164 system permission bit, 90 system-control permission bit, 90 sysUpTime object, 154 T T1 interfaces BERT test, 229–231 configuring, 225, 226 configuring Frame Relay, 231–232 loopback tests, 226–228 TACACS+ (Terminal Access Controller Access Control System Plus) group login accounts, 87, 88 JUNOS support, 74 login accounts and, 83, 86 loopback addresses, 203 prefix lists, 292 setting authentication method, 80–81 user authentication, 98 tag action (BGP), 291 Tag Switching, 479 tail –f command (Unix), 172 target VPN, 553 TCB (transmission control block), 438 654 | Index This is the Title of the Book, eMatter Edition Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.
TCP address spoofing, 266 authenticating connections, 498 BCP session problems, 436–438 BGP and, 419, 426 counting traffic, 329–331 firewall filters and, 99, 101, 303, 308, 313, 321 IPSec and, 106 LDP and, 484, 501 MSDP and, 609 OSPF and, 382 protecting Routing Engines, 327–329 setting up route reflectors, 452, 454, 456 SNMP and, 139 TCP/IP, 100, 382, 479 tcpdump command (Unix), 180 tcp-established match term, 306 tcp-flags match term, 306 tcp-initial match term, 306 Team Cymru adding BGP community, 468, 469 bogon lists caveat, 296 bogon route server project, 467, 471 martian addresses, 274 secure template, 328 TED (traffic engineering database), 485, 509 Telnet BGP sessions and, 427 firewall filters and, 139, 302–303, 307–308, 321, 323 management interface, 213 restricting inbound access, 98, 100 router security and, 73, 76, 77 setting source addresses, 100, 101 telnet command, 3, 89, 101 temperature hardware components, 146 monitoring, 149–153 Terminal Access Controller Access Control System Plus (see TACACS+) terminals copying text from, 32–34 forcibly logging out users, 105 terms (regular expressions), 445, 446 test command, 3 test interface command, 230 3DES-CBC encryption, 107, 117 thresholds cutoff, 459 dropping traffic, 320 monitoring MIB values against, 151 reuse, 459, 460, 462 suppression, 459, 460, 463 time to live (TTL), 469, 482 time zone function (FreeBSD), 183 time zones, 183, 184 time/date NTP and, 181 setting manually on routers, 182, 183, 187 slewing, 187 synchronizing for routers, 184, 185, 189 synchronizing periodically, 185–187 synchronizing system-wide, 181 timeout values, 94, 104 timestamps, 164, 173, 184 TLV 128, 359 TLV 132, 358 TLV 134, 358 TLV 135, 359 TLV 2, 359 TLV 22, 359 /tmp directory, 44 TNP (Trivial Network Protocol), 241 trace action, 300 trace flags BGP operations, 477 IS-IS operations, 380 LDP operations, 501 OSPF operations, 415 PIM and, 620 RIP operations, 347 trace permission bit, 90, 91 trace-control permission bit, 90 traceoption flag, 179 traceroute command access control, 141 adjusting IS-IS link costs, 374 adjusting OSPF link costs, 407 community strings, 133 description, 3 dynamic SAs and, 114 IPSec tunnel and, 109, 110 label-switched paths and, 546 login class permissions, 89 RIP traffic, 344 verifying packet labels, 517 tracing (trace logging) BGP traffic problems, 475–478 defined, 162 IS-IS traffic, 379–381 LDP operations, 500–502 OSPF traffic, 413–417 Index | 655 This is the Title of the Book, eMatter Edition Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.
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JUNOS Cookbook
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JUNOS Cookbook Aviva Garrett Beijin
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Table of Contents Foreword . . . .
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3. IPSec . . . . . . . . . . . . .
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8.5 Creating Static Routes 263 8.6
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13.5 Adjusting Local Preference Val
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Foreword The early days at Juniper
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Throughout 1997 and early 1998, all
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Preface1 Over the past decade, netw
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Organization As the name suggests,
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Constant width Used for code sectio
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Chapter 1 CHAPTER 1 Router Configur
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You can use a number of operational
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The show command displays the items
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Each listed completion is the confi
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command on the left side of the pip
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The > tells you that you are in ope
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} } } root@# commit root@router1# e
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For the initial router configuratio
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At this point in configuring the ro
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1.4 Displaying the Commands to Recr
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Discussion It is generally good pra
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is often the first thing to check w
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In this example, the error is in th
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To track down what changed in the c
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Solution Use the following command
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login { class superuser-local { per
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If PIM is not yet configured, merge
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You can also save it to a file in y
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These files are also compressed. av
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You see that the running configurat
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Solution The rollback configuration
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See Also Recipe 1.17 1.19 Backing U
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ad1 11513 MB IBM-DARA-212000 AH0AHG
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J-series filesystems on a device co
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1.22 Installing a Different Softwar
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Use the request system software add
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support site (http://www.juniper.ne
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JUNOS 7.0 was released in the fourt
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Some of the main processes are MGD,
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switching board (the SSB), and two
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1.28 Gathering Information Before C
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The apply-groups statement causes t
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} } } address 10.0.16.1/24; Finally
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The commit synchronize command comm
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modules/ packages/ proc/ root/ sbin
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At this point, you can also upgrade
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lets them gain access to the router
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client/server systems—the RADIUS
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You need to enable FTP only if you
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use of the root account. Logging in
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A slight twist to this recipe is to
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Also, you will not be able to commi
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Solution Set all plain-text passwor
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Discussion When you want users to b
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individual user accounts with passw
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ead-only Can perform all actions in
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If you try to enter a command that
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aviva@router1# set class operator-p
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If you use a centralized server, it
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aviva@RouterF# set term ssh-telnet
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statement in the configuration, whi
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een idle, and what they are doing.
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Mike would be logged out: mike@rout
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Encryption, which is the encoding o
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networks, it does not scale well. A
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} } [edit interfaces] es-3/0/0 { #
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have to set up an IKE SA and a fire
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Here’s what the relevant portions
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Finally, configure the domain’s I
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Configure the security gateway rout
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[edit protocols ospf area 0.0.0.0]
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Then, configure the IPSec tunnel to
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Issuer: Organization: mycompany, Co
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Alternate subject: RouterB.mycompan
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Chapter 4 CHAPTER 4 SNMP4 4.0 Intro
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juniperMIB, which is the top node o
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Juniper Networks provides several d
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4.2 Setting Router Information for
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Table 4-1. SNMP trap categories Key
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Solution You can add a term to the
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You might want to give access to al
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aviva@router1> show snmp mib get "j
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4.9 Collecting Router Operational I
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CPU utilization: User 0 percent Bac
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Table 4-2. System logging severity
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Discussion RMON is an SNMP specific
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See Also RFC 2819, Remote Network M
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nms1 sha/3des nonvolatile active Gr
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Again, this recipe is somewhat invo
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Finally, configure which traps the
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} notify chassis-notification-list
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Some are the same as those used by
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Solution Use the following commands
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5.2 Limiting the Messages Collected
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Discussion The default maximum size
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no longer need. Here, we logged RIP
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Discussion This configuration redir
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This command causes all messages se
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Apr 29 22:55:16 router xntpd[4977]:
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The traceoption flags indicate the
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Chapter 6 CHAPTER 6 NTP6 6.0 Introd
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6.2 Setting the Time Zone Problem Y
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Engine boots, the ntpdate utility r
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You can also have all the routers s
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6.6 Checking NTP Status Problem You
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Chapter 7 CHAPTER 7 Router Interfac
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under the name of the interface and
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Solution Use the show interfaces co
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the physical interface. It allows y
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Solution The show interfaces extens
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Broadcast packets 0 [0] Multicast p
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Input packets : 5 Output packets: 5
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1.0.12.2/30 so-1/0/0 Mars 1.0.0.1/3
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To remove an extra IP address, use
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Discussion For MPLS traffic to tran
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Flags: None Addresses, Flags: Is-Pr
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Solution Configure the router’s m
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On an M-series or a T-series router
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You can confirm the presence of the
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Protocol inet6, MTU: 1500 Flags: Is
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Solution Use the Virtual Router Red
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Solution There are three steps to s
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7.16 Configuring T1 Interfaces Prob
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Run the loopback test, which sends
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7.18 Setting Up a BERT Test on a T1
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You can configure an error rate to
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Discussion Synchronous Optical Netw
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SEF 22 182 OK LOS 22 1 OK LOF 22 1
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Use the show aps command to check t
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type of ATM PIC, the configuration
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gre up ipip up lo0 up up lo0.0 up u
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Solution Add the new interface to t
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While this does what you want, it m
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When a single routing protocol prov
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IPv6 uses 128-bit addresses that co
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8.1 Viewing the Routes in the Routi
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oute is learned from a dynamic rout
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} } family iso { address 49.0020.19
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8.2 Viewing Routes to a Particular
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8.3 Viewing Routes Learned from a S
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ff00::/8 perm 0 mdsc 53 1 ff02::1/1
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The actual forwarding tables that t
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and the traffic to these networks i
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Attacker A B Target Real source add
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Check the firewall filter counts wi
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Solution Create a routing policy th
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Discussion Martian addresses are pr
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Solution After configuring both OSP
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To verify the preference change, lo
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Peer supports Refresh capability (2
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This recipe shows how to enable gra
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Because the policy and filter condi
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then accept; } } } protocols { ospf
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The first command in the recipe def
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[edit] aviva@router1# set protocols
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Table 9-4. Actions that change rout
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(called longest-match lookup), so t
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aviva@router1# set term 2 then reje
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See Also IANA, http://www.iana.org/
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the community string from the route
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used to verify that the router is m
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} } Discussion } } Placing firewall
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Table 9-5. Header match conditions
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counterintuitive. However, understa
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protocol-except tcp; } then { count
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protocol tcp; destination-port [ te
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Firewall filter terms are evaluated
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9.12 Using a Firewall Filter to Cou
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04:58:41 pfe A t1-0/0/3.0 TCP 10.0.
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which traffic is more important and
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The next term allows TCP traffic: [
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Routing Engine, you want to make su
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from { source-address { 10.0.8.0/24
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9.16 Rate-Limiting Traffic Flow to
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list of IP addresses in one place i
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lished TCP connections and you sudd
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By default, the JUNOS software impl
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} } } neighbor fe-0/0/0.0; neighbor
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10.0.0.0/24 *[Direct/0] 2w4d 23:05:
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The routing policy you set up is a
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so the inbound metrics are 1. The m
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can use it in the authentication-ke
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10.6 Sending Version 1 Update Messa
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Mar 31 10:11:13 Group beta-rip-grou
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Chapter 11 CHAPTER 11 IS-IS11 11.0
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oundary. This means that the IS-IS
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might be useful when migrating two
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Interface System L State Hold (secs
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RouterA.02-00 0x59 0xeda9 632 L1 L2
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The next four lines show the IP pre
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configuring the preference statemen
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11.5 Configuring a Level 1-Only Rou
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11.6 Controlling DIS Election Probl
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key, or password, for each interfac
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} } from protocol static; then acce
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Again, we expect the metric to chan
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RouterA Level 2 RouterB Level 2 Rou
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Increasing the IS-IS cost of Router
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11.12 Moving IS-IS Traffic off a Ro
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11.14 Tracing IS-IS Protocol Traffi
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Using some of the other flags, you
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OSPF views routers as nodes, which
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Area 0.0.0.0 RouterG lo0:192.168.19
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Another common problem in establish
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The route entries starting with [OS
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entries that originated from the lo
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OSPF network. Route 192.168.18.1:0.
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Checking on RouterA at the other en
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192.168.19.1/32 *[Direct/0] 3d 01:5
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The routers in the stub area no lon
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Router 192.168.16.1 192.168.16.1 0x
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Solution You configure MD5 authenti
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Use the show ospf interface detail
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With the default metric, traffic fr
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12.12 Improving OSPF Convergence Ti
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This output shows two BFD sessions
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aviva@RouterG# commit aviva@RouterG
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Jun 14 22:00:26 CHANGE 192.168.17.1
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Jun 13 16:55:20 IP Route added with
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list of ASs to see whether a route
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E Route was originally learned from
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Then configure an EBGP session to t
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NLRI for this session: inet-unicast
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Next is information about routes le
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Looking at the remote peer router,
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* 10.0.31.0/24 Self I * 172.19.121.
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aviva@RouterE> show bgp summary Gro
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to 10.0.31.1 via t1-0/0/3.0 10.0.29
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lem with BGP itself. When the TCP s
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13.4 Adjusting the Next-Hop Attribu
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The first configuration in this rec
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13.7 Prepending AS Numbers to the A
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13.8 Filtering BGP Routes Based on
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Translated, this match looks for fo
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Type: External State: Established F
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This recipe configures MD5 authenti
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oute reflector system has a set of
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10.0.24.0/24 *[BGP/170] 00:18:38, l
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AS 65500 Sub-AS 65501 RouterF 192.1
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figure-of-merit value correlates to
Page 485 and 486:
Once the routing policy is set up,
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change, the router will unsuppress
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See Also RFC 2439, BGP Route Flap D
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You see that the route to 192.168.1
Page 493 and 494:
When setting up policies, also crea
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} See Also next-hop 192.0.2.1; acce
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Another restriction for multipath B
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This forwarding table is then copie
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BGP establishes the connection, fro
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Chapter 14a CHAPTER 14 MPLS14 14.0
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Layer 2 header MPLS header Layer 3
Page 507 and 508:
RouterG 192.168.19.1 Ingress router
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The main difference between LDP and
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family to the t1-4/0/0 interface; o
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Also verify the MPLS-enabled interf
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The first line of the output shows
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aviva@RouterG> show configuration p
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via t1-4/0/0.0, Push 100000 192.168
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aviva@RouterG> show route forwardin
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This recipe shows how to configure
Page 525 and 526:
Oct 5 19:25:52 Msg Hello (0x100), l
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aviva@R3# set rsvp interface fxp0.0
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fxp0 up up fxp0.0 up up inet 192.16
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aviva@R1> show rsvp interface RSVP
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y 13:31:06 the LSP was up and runni
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10.0.0.6 10.0.0.1 Up 0 1 FF 3 - R1-
Page 537 and 538:
Solution On the ingress router, loo
Page 539 and 540:
for LSP signaling. On the egress an
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Discussion There are several ways t
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14.9 Verifying that the RSVP-Signal
Page 545 and 546:
14.11 Protecting an LSP’s Path Pr
Page 547 and 548:
RSVP RRO in the path calculation lo
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The configuration allocates 50 Mbps
Page 551 and 552:
However, RSVP cannot establish the
Page 553 and 554:
Solution Fast reroute reduces packe
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PATH sentto: 10.1.13.2 (so-0/0/2.0)
Page 557 and 558:
The RSVP interface status shows tha
Page 559 and 560:
14.13 Automatically Allocating Band
Page 561 and 562:
Then examine the history of the LSP
Page 563 and 564:
To understand how preemption works,
Page 565 and 566:
10.0.0.5 From: 10.0.0.1, State: Up,
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9 Oct 14 10:51:20 Deselected as act
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The router knows how to reach its i
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10.1.13.1/32 *[Local/0] 2d 20:39:51
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aviva@R1> clear log rsvp-trace-log
Page 575 and 576:
PATH rcvfrom: 10.1.13.2 (so-0/0/2.0
Page 577 and 578:
The discussion of Layer 3 VPNs invo
Page 579 and 580:
VPN, and routes announced by a remo
Page 581 and 582:
The third and final step is to conf
Page 583 and 584:
One last protocol that you need to
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All routes that are part of the VPN
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--- 192.168.13.1 ping statistics --
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1 *[MPLS/0] 1d 18:03:41, metric 1 R
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65500:3:10.0.31.0/24 *[BGP/170] 00:
Page 593 and 594:
emains private. When configuring th
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} } peer-as 65500; neighbor 10.0.1.
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The VPN2 routing table also knows n
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Just to make sure that prefixes are
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Multicast senders and receivers are
Page 603 and 604:
You administratively configure the
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10.0.21.2/24 RouterB 192.168.12.1 R
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IGMP Last Member Query Interval: 1.
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Again, verify the configured group
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willing to be an RP send RP Announc
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JUNOS routers perform the encapsula
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Now check the RP status on the rout
Page 617 and 618:
Also, make sure that the router’s
Page 619 and 620:
Check to see which RPs the various
Page 621 and 622:
The anycast PIM configuration is qu
Page 623 and 624:
Solution Specify the group address
Page 625 and 626:
The interfaces toward the multicast
Page 627 and 628: Discussion Flags: sparse Upstream i
Page 629 and 630: IGMP Query Response Interval: 10.0
Page 631 and 632: If you are not sure that the domain
Page 633 and 634: Discussion With PIM-SM, the RP in e
Page 635 and 636: The full RIB group configuration lo
Page 637 and 638: } address 192.168.19.1; # ping 224
Page 639 and 640: Upstream interface: local Upstream
Page 641 and 642: The first entry is for the source i
Page 643 and 644: IGMP Last Member Query Interval: 1.
Page 645: The command in this recipe is a sim
Page 648 and 649: adjacencies (continued) IGPs and, 1
Page 650 and 651: BGP (Border Gateway Protocol) (cont
Page 652 and 653: configure command (continued) exclu
Page 654 and 655: dotted quad notation, 248 down arro
Page 656 and 657: firewall filters (continued) loggin
Page 658 and 659: IBGP (internal BGP) (continued) LOC
Page 660 and 661: IP multicast (continued) limiting g
Page 662 and 663: Level 1 systems (IS-IS) authenticat
Page 664 and 665: martian addresses/prefixes (continu
Page 666 and 667: O Object Identifier (see OID) OID (
Page 668 and 669: plain-text passwords (continued) JU
Page 670 and 671: RFC (Request for Comment) on BGP, 4
Page 672 and 673: outing tables (continued) checking
Page 674 and 675: set route-filter command, 296 set r
Page 676 and 677: show ospf interface command, 386, 3
Page 680 and 681: tracing (trace logging) (continued)
Page 683: About the Author Aviva Garrett has
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