Tracing RSVP Operations
Problem
You want to keep a running log of RSVP events that occur on the router in case any problems arise and you need to debug problems with RSVP or your LSPs.
Solution
When performing ongoing monitoring of RSVP operations, set up tracing options to track RSVP events that occur on the router:
[edit protocols rsvp] aviva@R1# set traceoptions file rsvp-trace-log world-readable aviva@R1# set traceoptions flag packets detail
Discussion
Its a good practice to trace high-level RSVP operations on an ongoing basis so that if a problem occurs, you can examine the logs as part of your troubleshooting process. Then you can enable more detailed traceoptions flags to help pinpoint the causes.
This recipe sets up tracing of RSVP packets that are sent and received by the router, saving them to the file rsvp-trace-log. The world-readable option allows anyone logged in to the router to read the file. This file is created on the routers hard disk in the directories /var/log (on M-series and T-series routers) and /cf/var/log (on J-series routers). The detail option provides additional information about the packets. Heres what the file contains when existing RSVP sessions are cleared and then restarted:
aviva@R1> clear log rsvp-trace-log aviva@R1> clear rsvp sessions aviva@R1> show log rsvp-trace-log Nov 4 16:47:41 R1 clear-log[22684]: logfile cleared Nov 4 16:47:47 RSVP send PathErr 10.1.13.1->10.1.13.2 Len=188 so-0/0/2.0 Nov 4 16:47:47 Integty Len 36 flag 0x0 key 0x0000010d010a seq 0x2c016c435db8 0b00 digest 0x53682741 0x68419a28 0x340b7b1d 0x8bdc0112 Nov 4 16:47:47 Session7 Len 16 10.0.0.1(port/tunnel ID 51620 Ext-ID 10.0.0.6) Proto 0 Nov 4 16:47:47 Error Len 12 Session preempted flag 0 by 10.1.13.1 Nov 4 16:47:47 Sender7 Len 12 10.0.0.6(port/lsp ID 1) Nov 4 16:47:47 Tspec Len 36 rate 0bps size 0bps peak Infbps m 20 M 1500 Nov 4 16:47:47 ADspec Len 48 MTU 1500 Nov 4 16:47:47 RecRoute Len 20 10.1.13.2 10.1.36.2 Nov 4 16:47:47 RSVP send ResvTear 10.1.13.1->10.1.13.2 Len=92 so-0/0/2.0 Nov 4 16:47:47 Integty Len 36 flag 0x0 key 0x0000010d010a seq 0x33016c434b6b 0200 digest 0x3c6b90bf 0x3d4bc125 0x5cb3da5d 0x42518ffc Nov 4 16:47:47 Session7 Len 16 10.0.0.1(port/tunnel ID 51620 Ext-ID 10.0.0.6) Proto 0 Nov 4 16:47:47 Hop Len 12 10.1.13.1/0x0869a660 Nov 4 16:47:47 Style Len 8 FF Nov 4 16:47:47 Filter7 Len 12 10.0.0.6(port/lsp ID 1) Nov 4 16:47:47 RSVP send PathTear 10.0.0.1->10.0.0.6 Len=120 so-0/0/2.0 Nov 4 16:47:47 Integty Len 36 flag 0x0 key 0x0000010d010a seq 0x33016c43456d 0200 digest 0x582dab2c 0x3801d98c 0x7dbf2854 0x8f8ea32e Nov 4 16:47:47 Session7 Len 16 10.0.0.6(port/tunnel ID 39357 Ext-ID 10.0.0.1) Proto 0 Nov 4 16:47:47 Hop Len 12 10.1.13.1/0x086dd770 Nov 4 16:47:47 Sender7 Len 12 10.0.0.1(port/lsp ID 2) Nov 4 16:47:47 Tspec Len 36 rate 0bps size 0bps peak Infbps m 20 M 1500 Nov 4 16:47:47 RSVP recv Path 10.0.0.6->10.0.0.1 Len=244 so-0/0/2.0 Nov 4 16:47:47 Integty Len 36 flag 0x0 key 0x0000020d010a seq 0xbbfe6b43793e 0800 digest 0x1a36b6f1 0xf3d0cd4d 0x0c3ffc31 0x6f587cf9 Nov 4 16:47:47 Session7 Len 16 10.0.0.1(port/tunnel ID 51620 Ext-ID 10.0.0.6) Proto 0 Nov 4 16:47:47 Hop Len 12 10.1.13.2/0x0869a660 Nov 4 16:47:47 Time Len 8 30000 ms Nov 4 16:47:47 SrcRoute Len 12 10.1.13.1 S Nov 4 16:47:47 LabelRequest Len 8 EtherType 0x800 Nov 4 16:47:47 Properties Len 12 Primary path Nov 4 16:47:47 SessionAttribute Len 16 Prio (7,0) flag 0x0 "R6-to-R1" Nov 4 16:47:47 Sender7 Len 12 10.0.0.6(port/lsp ID 1) Nov 4 16:47:47 Tspec Len 36 rate 0bps size 0bps peak Infbps m 20 M 1500 Nov 4 16:47:47 ADspec Len 48 MTU 1500 Nov 4 16:47:47 RecRoute Len 20 10.1.13.2 10.1.36.2 Nov 4 16:47:47 RSVP send Resv 10.1.13.1->10.1.13.2 Len=156 so-0/0/2.0 Nov 4 16:47:47 Integty Len 36 flag 0x0 key 0x0000010d010a seq 0x33016c43e07d 0200 digest 0x976571f8 0x06983f40 0x7a9bb90d 0xfdf51c42 Nov 4 16:47:47 Session7 Len 16 10.0.0.1(port/tunnel ID 51620 Ext-ID 10.0.0.6) Proto 0 Nov 4 16:47:47 Hop Len 12 10.1.13.1/0x0869a660 Nov 4 16:47:47 Time Len 8 30000 ms Nov 4 16:47:47 Style Len 8 FF Nov 4 16:47:47 Flow Len 36 rate 0bps size 0bps peak Infbps m 20 M 1500 Nov 4 16:47:47 Filter7 Len 12 10.0.0.6(port/lsp ID 1) Nov 4 16:47:47 Label Len 8 3 Nov 4 16:47:47 RecRoute Len 12 10.1.13.1 Nov 4 16:47:49 RSVP recv Hello New 10.1.13.2->10.1.13.1 Len=68 so-0/0/2.0 Nov 4 16:47:49 Integty Len 36 flag 0x0 key 0x0000020d010a seq 0xbbfe6b43793e 0800 digest 0x0a523b8a 0x89b1162e 0x18a9feab 0x901053f2 Nov 4 16:47:49 HelloReq Len 12 Nov 4 16:47:49 RestartCap Len 12 restart time 0, recovery time 0 Nov 4 16:47:49 RSVP send Hello New 10.1.13.1->10.1.13.2 Len=68 so-0/0/2.0 Nov 4 16:47:49 Integty Len 36 flag 0x0 key 0x0000010d010a seq 0x35016c43dd51 0c00 digest 0xfc4c9304 0xe69e24ee 0xd219ef33 0x6a5f31e5 Nov 4 16:47:49 HelloRply Len 12 Nov 4 16:47:49 RestartCap Len 12 restart time 0, recovery time 0
The first RSVP packet sent is a PathErr, which indicates that some type of error has occurred on the LSP. When RSVP clears the sessions, it sends two PathTear messages to tear down the session, one message to the interface link between 10.1.13.1 and 10.1.13.2, and the second message to the link between the loopback addresses of the ingress router (10.0.0.1) and the egress router (10.0.0.6). As RSVP re-establishes the LSP, it exchanges Path and Resv messages. Once the RSVP session is set up again, RSVP exchanges periodic Hello messages. The information logged for the RSVP Path packets is similar to the show rsvp session detail command output:
aviva@R1> show rsvp session detail Ingress RSVP: 1 sessions 10.0.0.6 From: 10.0.0.1, LSPstate: Up, ActiveRoute: 1 LSPname: R1-to-R6, LSPpath: Primary Suggested label received: -, Suggested label sent: - Recovery label received: -, Recovery label sent: 100128 Resv style: 1 FF, Label in: -, Label out: 100128 Time left: -, Since: Fri Nov 4 16:52:15 2005 Tspec: rate 0bps size 0bps peak Infbps m 20 M 1500 Port number: sender 4 receiver 39357 protocol 0 PATH rcvfrom: localclient Adspec: sent MTU 1500 Path MTU: received 1500 PATH sentto: 10.1.13.2 (so-0/0/2.0) 4 pkts RESV rcvfrom: 10.1.13.2 (so-0/0/2.0) 4 pkts Explct route: 10.1.13.2 10.1.36.2 Record route:10.1.13.2 10.1.36.2 Total 1 displayed, Up 1, Down 0 Egress RSVP: 1 sessions 10.0.0.1 From: 10.0.0.6, LSPstate: Up, ActiveRoute: 0 LSPname: R6-to-R1, LSPpath: Primary Suggested label received: -, Suggested label sent: - Recovery label received: -, Recovery label sent: - Resv style: 1 FF, Label in: 3, Label out: - Time left: 146, Since: Fri Nov 4 16:51:45 2005 Tspec: rate 0bps size 0bps peak Infbps m 20 M 1500 Port number: sender 1 receiver 51620 protocol 0 PATH rcvfrom: 10.1.13.2 (so-0/0/2.0) 5 pkts Adspec: received MTU 1500 PATH sentto: localclient RESV rcvfrom: localclient Record route: 10.1.36.2 10.1.13.2 Total 1 displayed, Up 1, Down 0 Transit RSVP: 0 sessions Total 0 displayed, Up 0, Down 0
The configuration in this recipe creates 10 logfiles (the default) and uses the default trace file size of 10 MB, which is generally a useful size for logging events over a long period of time. If the router is the ingress or egress point for a large number of LSPs, you might want to increase the file size so that you have time to review or archive the logfiles before the files start overwriting each other:
[edit protocols rsvp] aviva@RouterF# set traceoptions file size 100M
When debugging BGP, you can set one or more of the following trace flags to monitor BGP information:
[edit protocols rsvp] aviva@R1# set traceoptions flag ? Possible completions: all Trace everything error Trace error conditions event Trace RSVP related events lmp Trace RSVP-LMP related interactions packets Trace all RSVP packets path Trace RSVP path messages pathtear Trace RSVP PathTear messages resv Trace RSVP Resv messages resvtear Trace RSVP ResvTear messages route Trace routing information state Trace state transitions
If you are receiving signaling errors when setting up or running RSVP, use the flag error flag to log erroneous conditions.
See Also
Recipe 5.10
Router Configuration and File Management
- Introduction
- Configuring the Router for the First Time
- Configuring the Router from the CLI
- Getting Exclusive Access to Configure the Router
- Displaying the Commands to Recreate a Configuration
- Including Comments in the Configuration
- Checking the Syntax of the Configuration
- Activating the Router Configuration
- Debugging a Failed Commit
- Exiting Configuration Mode
- Keeping a Record of Configuration Changes
- Determining What Changes You Have Made to the Configuration
- Configuring the Router by Copying a File from a Server
- Configuring the Router by Copying Text from a Terminal Window
- Backing Up the Routers Configuration
- Scheduling the Activation of a Configuration
- Provisionally Activating a Configuration
- Loading a Previous Router Configuration
- Creating an Emergency Rescue Configuration
- Backing Up Filesystems on M-Series and T-Series Routers
- Backing Up Filesystems on J-Series Routers
- Restoring a Backed-Up Filesystem
- Installing a Different Software Release on M-Series and T-Series Routers
- Installing a Different Software Release on J-Series Routers
- Creating an Emergency Boot Disk
- Gathering Software Version Information
- Gathering Hardware Inventory Information
- Finding Out How Long the Router Has Been Up
- Gathering Information Before Contacting Support
- Managing Routers with Similar Configurations
- Managing Redundant Routing Engines
- Using the Second Routing Engine to Upgrade to a New Software Version
Basic Router Security and Access Control
- Basic Router Security and Access Control
- Introduction
- Allowing Access to the Router
- Controlling Root Authentication
- Logging In to the Routers Console
- Setting the Login Authentication Methods
- Setting Up Login Accounts on the Router
- Changing the Format of Plain-Text Passwords
- Changing the Plain-Text Password Encryption Method
- Creating a Login Account for Remote Authentication
- Creating a Group Login Account
- Customizing Account Privileges
- Creating a Privilege Class that Hides Encrypted Passwords
- Setting Up RADIUS User Authentication
- Setting Up TACACS+ User Authentication
- Restricting Inbound SSH and Telnet Access
- Setting the Source Address for Telnet Connections
- Creating a Login Banner
- Finding Out Who Is Logged In to the Router
- Logging Out of the Router
- Forcibly Logging a User Out
IPSec
- IPSec
- Introduction
- Configuring IPSec
- Configuring IPSec Dynamic SAs
- Creating IPSec Dynamic SAs on J-Series Routers or Routers with AS PICs
- Using Digital Certificates to Create Dynamic IPSec SAs
SNMP
- SNMP
- Introduction
- Configuring SNMP
- Setting Router Information for the MIB-II System Group
- Setting Up SNMP Traps
- Controlling SNMP Access to the Router
- Using a Firewall Filter to Protect SNMP Access
- Controlling Access to Router MIBs
- Extracting Software Inventory Information with SNMP
- Extracting Hardware Inventory Information with SNMP
- Collecting Router Operational Information with SNMP
- Logging SNMP Access to the Router
- Logging Enterprise-Specific Traps
- Using RMON Traps to Monitor the Routers Temperature
- Configuring SNMPv3
- Tracking Router Configuration Changes
- Setting Up SNMPv3 Traps
Logging
- Logging
- Introduction
- Turning On Logging
- Limiting the Messages Collected
- Including the Facility and Severity in Messages
- Changing the Size of a Logging File
- Clearing the Routers Logfiles
- Sending Log Messages to Your Screen
- Sending Logging Messages to a Log Server
- Saving Logging Messages to the Other Routing Engine
- Turning Off Logging
- Turning On Basic Tracing
- Monitoring Interface Traffic
NTP
- NTP
- Introduction
- Setting the Date and Time on the Router Manually
- Setting the Time Zone
- Synchronizing Time When the Router Boots
- Synchronizing Time Periodically
- Authenticating NTP
- Checking NTP Status
Router Interfaces
- Router Interfaces
- Introduction
- Viewing Interface Status
- Viewing Traffic Statistics on an Interface
- Setting an IP Address for the Router
- Setting the Routers Source Address
- Configuring an IPv4 Address on an Interface
- Configuring an IPv6 Address on an Interface
- Configuring an ISO Address on an Interface
- Creating an MPLS Protocol Family on a Logical Interface
- Configuring an Interface Description
- Choosing Primary and Preferred Interface Addresses
- Using the Management Interface
- Finding Out What IP Addresses Are Used on the Router
- Configuring Ethernet Interfaces
- Using VRRP on Ethernet Interfaces
- Connecting to an Ethernet Switch
- Configuring T1 Interfaces
- Performing a Loopback Test on a T1 Interface
- Setting Up a BERT Test on a T1 Interface
- Configuring Frame Relay on a T1 Interface
- Configuring a SONET Interface
- Using APS to Protect Against SONET Circuit Failures
- Configuring an ATM Interface
- Dealing with Nonconfigurable Interfaces
- Configuring Interfaces Before the PICs Are Installed
IP Routing
- IP Routing
- Introduction
- Viewing the Routes in the Routing Table
- Viewing Routes to a Particular Prefix
- Viewing Routes Learned from a Specific Protocol
- Displaying the Routes in the Forwarding Table
- Creating Static Routes
- Blackholing Routes
- Filtering Traffic Using Unicast Reverse-Path Forwarding
- Aggregating Routes
- Load-Balancing Traffic Flows
- Adding Martian Addresses
- Changing Route Preferences to Migrate to Another IGP
- Configuring Routing Protocols to Restart Without Losing Adjacencies
Routing Policy and Firewall Filters
- Routing Policy and Firewall Filters
- Introduction
- Creating a Simple Routing Policy
- Changing a Routes Routing Information
- Filtering Routes by IP Address
- Filtering Long Prefixes
- Filtering Unallocated Prefix Blocks
- Creating a Chain of Routing Policies
- Making Sure a Routing Policy Is Functioning Properly
- Creating a Simple Firewall Filter that Matches Packet Contents
- Creating a Firewall Filter that Negates a Match
- Reordering Firewall Terms
- Filtering Traffic Transiting the Router
- Using a Firewall Filter to Count Traffic on an Interface
- Logging the Traffic on an Interface
- Limiting Traffic on an Interface
- Protecting the Local Routing Engine
- Rate-Limiting Traffic Flow to the Routing Engine
- Using Counters to Determine Whether a Router Is Under Attack
RIP
- RIP
- Introduction
- Configuring RIP
- Having RIP Advertise Its Routes
- Configuring RIP for IPv6
- Enabling RIP Authentication
- Routing RIP Traffic over Faster Interfaces
- Sending Version 1 Update Messages
- Tracing RIP Protocol Traffic
IS-IS
- IS-IS
- Introduction
- Configuring IS-IS
- Viewing the IS-IS Link-State Database
- Viewing Routes Learned by IS-IS
- Configuring IS-IS for IPv6
- Configuring a Level 1Only Router
- Controlling DIS Election
- Enabling IS-IS Authentication
- Redistributing Static Routes into IS-IS
- Leaking IS-IS Level 2 Routes into Level 1
- Adjusting IS-IS Link Costs
- Improving IS-IS Convergence Times
- Moving IS-IS Traffic off a Router
- Disabling IS-IS on an Interface
- Tracing IS-IS Protocol Traffic
OSPF
- Introduction
- Configuring OSPF
- Viewing Routes Learned by OSPF
- Viewing the OSPF Link-State Database
- Configuring OSPF for IPv6
- Configuring a Multiarea OSPF Network
- Setting Up Stub Areas
- Creating a Not-So-Stubby Area
- Summarizing Routes in OSPF
- Enabling OSPF Authentication
- Redistributing Static Routes into OSPF
- Adjusting OSPF Link Costs
- Improving OSPF Convergence Times
- Moving OSPF Traffic off a Router
- Disabling OSPF on an Interface
- Tracing OSPF Protocol Traffic
BGP
- Introduction
- Configuring a BGP Session Between Routers in Two ASs
- Configuring BGP on Routers Within an AS
- Diagnosing TCP Session Problems
- Adjusting the Next-Hop Attribute
- Adjusting Local Preference Values
- Removing Private AS Numbers from the AS Path
- Prepending AS Numbers to the AS Path
- Filtering BGP Routes Based on AS Paths
- Restricting the Number of Routes Advertised to a BGP Peer
- Authenticating BGP Peers
- Setting Up Route Reflectors
- Mitigating Route Instabilities with Route Flap Damping
- Adding a BGP Community to Routes
- Load-Balancing BGP Traffic
- Tracing BGP Protocol Traffic
MPLS
- Introduction
- Configuring LSPs Using LDP as the Signaling Protocol
- Viewing Information and LDP-Signaled LSPs in the Routing Tables
- Verifying that an LDP-Signaled LSP Is Carrying Traffic
- Enabling LDP Authentication
- Tracing LDP Operations
- Setting Up RSVP-Signaled LSPs
- Viewing Information About RSVP-Signaled LSPs in the Routing Tables
- Verifying Packet Labels
- Verifying that the RSVP-Signaled LSP Is Carrying Traffic
- Configuring RSVP Authentication
- Protecting an LSPs Path
- Using Fast Reroute to Reduce Packet Loss Following a Link Failure
- Automatically Allocating Bandwidth
- Prioritizing LSPs
- Allowing IGP Traffic to Use an LSP
- Installing LSPs into the Unicast Routing Table
- Tracing RSVP Operations
VPNs
- Introduction
- Setting Up a Simple Layer 3 VPN
- Viewing the VPN Routing Tables
- Adding a VPN for a Second Customer
IP Multicast
- Introduction
- Configuring PIM-SM
- Manually Establishing a PIM-SM RP
- Using Auto-RP to Dynamically Map RPs
- Setting Up a PIM-SM Bootstrap Router
- Filtering PIM-SM Bootstrap Messages
- Configuring Multiple RPs in a PIM-SM Domain with Anycast RP
- Configuring Multiple RPs in a PIM-SM Domain Anycast PIM
- Limiting the Group Ranges an RP Services
- Viewing Multicast Routes
- Checking the Groups for Which a PIM-SM Router Maintains Join State
- Manually Configuring IGMP
- Using SSM
- Connecting PIM-SM Domains Using MSDP and MBGP
- Configuring PIM-DM
- Tracing PIM Packets
Junos Cookbook (Cookbooks (OReilly))
ISBN: 0596100140
EAN: 2147483647
EAN: 2147483647
Year: 2007
Pages: 290
Pages: 290
Authors: Aviva Garrett
