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RIPv2 Updates Ignored 0 0 0 Authentication Failures 0 0 0 RIP Requests Received 0 0 0 RIP Requests Ignored 0 0 0 10.7 Tracing RIP Protocol Traffic Problem You are setting up RIP on your network and want to keep a running log of RIP protocol updates that the router is sending to help you track any problems that might occur during the configuration process. Solution You set up a trace file that captures all information about RIP protocol update messages: [edit protocols rip] aviva@RouterA# set traceoptions file rip-update-log aviva@RouterA# set traceoptions flag update aviva@RouterA# show traceoptions { file rip-update-log; flag update; } <strong>Discussion</strong> When you need to debug RIP operations, you can use the JUNOS tracing facility to track the packets that RIP is sending. You specify the name of the file to which you want to collect the information and the type of information you want to trace. In this example, we are logging RIP update traffic information in the file named rip-updatelog, which is on the router’s hard disk in the directory /var/log. To see the RIP protocol update messages, look at the contents of the file: aviva@RouterA> show log rip-update-log Mar 31 10:10:47 trace_on: Tracing to "/var/log/rip-update-log" started Mar 31 10:10:51 received response: command 2, version 2, mbz: 0; 5 routes. Mar 31 10:11:00 received response: command 2, version 2, mbz: 0; 8 routes. Mar 31 10:11:13 Preparing to send RIPv2 updates. Mar 31 10:11:13 Update job: sending 20 msgs; group: alpha-rip-group. Mar 31 10:11:13 nbr se-0/0/3.0; msgp: 0x866ee00. Mar 31 10:11:13 sending msg 0x866ee04, 6 rtes Mar 31 10:11:13 nbr se-0/0/3.0 done. Mar 31 10:11:13 Group alpha-rip-group done. Mar 31 10:11:13 New group beta-rip-group. Mar 31 10:11:13 New nbr fe-0/0/1.0; msgp 0x8672000. Mar 31 10:11:13 sending msg 0x8672004, 8 rtes Mar 31 10:11:13 nbr fe-0/0/1.0 done. 346 | Chapter 10: RIP This is the Title of the Book, eMatter Edition Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.
Mar 31 10:11:13 Group beta-rip-group done. Mar 31 10:11:13 Update job done! Mar 31 10:11:20 received response: command 2, version 2, mbz: 0; 5 routes. What you are seeing here is the standard RIP message update process. Every 30 seconds, RIP sends an unsolicited update message that contains the complete routing table to every neighboring router. This router has two RIP neighbors, reachable through interfaces se-0/0/3 and fe-0/0/1. In this update, the router sends six routes to the neighbor on the serial interface and eight routes to the neighbor of the Fast Ethernet interface. The second and third lines of the file show that the local router has received two updates from its two RIP neighbors, one with five and the other with eight routes. Over time, logfiles can get very large. RIP is a very chatty protocol. You can see from the timestamps in this example that tracing has been on for about 40 seconds. Similar information is added to the file every 30 seconds. If you want to save the logfile for future analysis, you can copy the file to a server: aviva@RouterA> file copy /var/log/rip-update-log server1:rip-update-log-20050227 If you no longer need the information in the file, you can delete the contents: aviva@RouterA> clear log rip-update-log Deleting the file’s contents does not turn off tracing. To stop the tracing altogether, you need to either deactivate or remove the traceoptions statement from the configuration: or: [edit protocols rip] aviva@RouterA# deactivate traceoptions aviva@RouterA# show protocols rip inactive: traceoptions { file rip-update-log; flag update; } [edit protocols rip] aviva@RouterA# delete traceoptions When debugging RIP, you can set one or more of the following trace flags to capture RIP information: [edit protocols rip traceoptions] aviva@RouterA# set flag ? Possible completions: all Trace everything auth Trace RIP authentication error Trace RIP errors expiration Trace RIP route expiration processing general Trace general events holddown Trace RIP hold-down processing normal Trace normal events This is the Title of the Book, eMatter Edition Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved. Tracing RIP Protocol Traffic | 347
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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
Page 319 and 320: aviva@router1# set term 2 then reje
Page 321 and 322: See Also IANA, http://www.iana.org/
Page 323 and 324: the community string from the route
Page 325 and 326: used to verify that the router is m
Page 327 and 328: } } Discussion } } Placing firewall
Page 329 and 330: Table 9-5. Header match conditions
Page 331 and 332: counterintuitive. However, understa
Page 333 and 334: protocol-except tcp; } then { count
Page 335 and 336: protocol tcp; destination-port [ te
Page 337 and 338: Firewall filter terms are evaluated
Page 339 and 340: 9.12 Using a Firewall Filter to Cou
Page 341 and 342: 04:58:41 pfe A t1-0/0/3.0 TCP 10.0.
Page 343 and 344: which traffic is more important and
Page 345 and 346: The next term allows TCP traffic: [
Page 347 and 348: Routing Engine, you want to make su
Page 349 and 350: from { source-address { 10.0.8.0/24
Page 351 and 352: 9.16 Rate-Limiting Traffic Flow to
Page 353 and 354: list of IP addresses in one place i
Page 355 and 356: lished TCP connections and you sudd
Page 357 and 358: By default, the JUNOS software impl
Page 359 and 360: } } } neighbor fe-0/0/0.0; neighbor
Page 361 and 362: 10.0.0.0/24 *[Direct/0] 2w4d 23:05:
Page 363 and 364: The routing policy you set up is a
Page 365 and 366: so the inbound metrics are 1. The m
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Page 369: 10.6 Sending Version 1 Update Messa
Page 373 and 374: Chapter 11 CHAPTER 11 IS-IS11 11.0
Page 375 and 376: oundary. This means that the IS-IS
Page 377 and 378: might be useful when migrating two
Page 379 and 380: Interface System L State Hold (secs
Page 381 and 382: RouterA.02-00 0x59 0xeda9 632 L1 L2
Page 383 and 384: The next four lines show the IP pre
Page 385 and 386: configuring the preference statemen
Page 387 and 388: 11.5 Configuring a Level 1-Only Rou
Page 389 and 390: 11.6 Controlling DIS Election Probl
Page 391 and 392: key, or password, for each interfac
Page 393 and 394: } } from protocol static; then acce
Page 395 and 396: Again, we expect the metric to chan
Page 397 and 398: RouterA Level 2 RouterB Level 2 Rou
Page 399 and 400: Increasing the IS-IS cost of Router
Page 401 and 402: 11.12 Moving IS-IS Traffic off a Ro
Page 403 and 404: 11.14 Tracing IS-IS Protocol Traffi
Page 405 and 406: Using some of the other flags, you
Page 407 and 408: OSPF views routers as nodes, which
Page 409 and 410: Area 0.0.0.0 RouterG lo0:192.168.19
Page 411 and 412: Another common problem in establish
Page 413 and 414: The route entries starting with [OS
Page 415 and 416: entries that originated from the lo
Page 417 and 418: OSPF network. Route 192.168.18.1:0.
Page 419 and 420: 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
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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
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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
Page 505 and 506:
Layer 2 header MPLS header Layer 3
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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
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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
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for LSP signaling. On the egress an
Page 541 and 542:
Discussion There are several ways t
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14.9 Verifying that the RSVP-Signal
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14.11 Protecting an LSP’s Path Pr
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RSVP RRO in the path calculation lo
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The configuration allocates 50 Mbps
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However, RSVP cannot establish the
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Solution Fast reroute reduces packe
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PATH sentto: 10.1.13.2 (so-0/0/2.0)
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The RSVP interface status shows tha
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14.13 Automatically Allocating Band
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Then examine the history of the LSP
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To understand how preemption works,
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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
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The discussion of Layer 3 VPNs invo
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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 --
Page 589 and 590:
1 *[MPLS/0] 1d 18:03:41, metric 1 R
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65500:3:10.0.31.0/24 *[BGP/170] 00:
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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.
Page 609 and 610:
Again, verify the configured group
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willing to be an RP send RP Announc
Page 613 and 614:
JUNOS routers perform the encapsula
Page 615 and 616:
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 678 and 679:
ssh command, 3, 89 SSM (Source-Spec
Page 680 and 681:
tracing (trace logging) (continued)
Page 683:
About the Author Aviva Garrett has
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