Configuring OSPF for IPv6
Problem
You want to use OSPF on an IPv6 network.
Solution
The configuration for OSPFv3 is the same as for OSPFv2, the IPv4 version of OSPF, except that you use set ospf3 commands instead of set ospf commands:
[edit protocols] aviva@RouterJ# set ospf3 area 0.0.0.0 interface fe-1/0/0.0 aviva@RouterJ# set ospf3 area 0.0.0.0 interface lo0.0 passive
Discussion
JUNOS OSPFv3 configuration for IPv6 networks is basically identical to OSPFv2 configuration. You configure the protocol with set ospf3 commands instead of set ospf commands and use show ospf3 commands instead of show ospf commands to check on the OSPF status. Also, make sure to set IPv6 address on the interfaces running OSPFv3 and on the loopback interface, lo0.
This recipe shows how to configure an OSPFv3 backbone router. All backbone routers have the same basic configuration. As with OSPFv2, define which interfaces are in the area. Again, include the lo0 interface, configured as a passive interface, so that it advertises its address into OSPF.
To check that OSPF is running on the router interfaces, use the show ospf3 interface command:
aviva@RouterH> show ospf3 interface Interface State Area DR-ID BDR-ID Nbrs fe-1/0/0.0 DR 0.0.0.0 192.168.18.1 10.0.0.1 1 lo0.0 DRother 0.0.0.0 0.0.0.0 0.0.0.0 0
The output shows that OSPFv3 is running on the configured interfaces, fe-1/0/0 and lo0, and that the Fast Ethernet interface is the DR. The DR-ID and BDR-ID columns show the OSPF router ID of the DR and BDR routers.
Use the following command to see the neighbors with which the router has formed OSPFv3 adjacencies:
aviva@RouterH> show ospf3 neighbor ID Interface State Pri Dead 10.0.0.1 fe-1/0/0.0 Full 128 36 Neighbor-address fe80::205:85ff:fec4:72f4
You see one adjacency, with the router ID 10.0.0.1, which is the neighbor via interface fe-1/0/0. As with OSPFv2, Full in the State column indicates that the OSPFv3 adjacency is up and running. The neighbor has a default priority of 128, the same default as OSPFv2, which is used to elect the DR.
To see the OSPF routing table on the router, use the show ospf3 route command:
aviva@RouterH> show ospf3 route Prefix Path Route NH Metric type type type 10.0.0.1 Intra Router IP 1 NH-interface fe-1/0/0.0, NH-addr fe80::205:85ff:fec4:72f4 192.168.18.1;0.0.0.3 Intra Transit IP 1 NH-interface fe-1/0/0.0 9009:3::/64 Intra Network IP 1 NH-interface fe-1/0/0.0
The prefix column shows the routes to the other Area 0 router. One difference in the output for OSPFv3 is that the loopback address, 192.168.18.1, shows up as type TRansit instead of as Network to indicate that the loopback address is not on a real OSPF network. Route 192.168.18.1:0.0.0.3 actually represents a route to the pseudonode corresponding to the fe-1/0/0 link. (In OSPFv3, a LAN link is called a transit link.) Any multiaccess link, such as a LAN or an NBMA link, is represented by a fake node, or pseudonode, in the IGP. This route is used for debugging and is not installed in the forwarding table.
The OSPFv3 link-state database contains more information than for OSPFv2:
aviva@RouterH> show ospf3 database OSPF3 link state database, area 0.0.0.0 Type ID Adv Rtr Seq Age Cksum Len Router 0.0.0.0 10.0.0.1 0x80000422 933 0x3338 40 Router *0.0.0.0 192.168.18.1 0x80000013 327 0x1fee 40 Router 0.0.0.0 192.168.19.1 0x80000012 3399 0x98e4 56 Network *0.0.0.3 192.168.18.1 0x80000003 27 0x31ee 32 Network 0.0.0.1 192.168.19.1 0x8000000e 3399 0x4352 36 IntraArPfx *0.0.0.4 192.168.18.1 0x80000002 932 0x2602 44 IntraArPfx 0.0.0.2 192.168.19.1 0x8000000d 3399 0xe937 44 OSPF3 Link-Local link state database, interface fe-1/0/0.0 Type ID Adv Rtr Seq Age Cksum Len Link 0.0.0.4 10.0.0.1 0x80000001 933 0xd6af 56 Link *0.0.0.3 192.168.18.1 0x80000005 627 0x3f76 56
In addition to listing the entries in this area, Area 0.0.0.0, the second part of the output shows the entries in the link-local, link-state database for this interface. These are the database entries learned over the specific OSPFv3 interface and they are visible only by nodes that are directly on this link.
See Also
Recipes 7.6 and 12.1
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
EAN: 2147483647
Pages: 290
