Technical Documentation

Routing Protocols Configuration Guide

OverviewProtocol-Independent Routing PropertiesRouting InstancesMultitopology RoutingInterior Gateway ProtocolsBGP

Routing Protocols Concepts

Routing Databases Overview

Route Preferences Overview

How the Active Route Is Determined

Default Route Preference Values

Equal-Cost Paths and Load Sharing

IPv6 Overview

IPv6 Standards

Complete Routing and Routing Protocol Configuration Statements

[edit logical-systems] Hierarchy Level

[edit protocols] Hierarchy Level

[edit routing-instances] Hierarchy Level

[edit routing-options] Hierarchy Level

Protocol-Independent Routing Properties Overview

Protocol-Independent Routing Properties Configuration Statements

Minimum Protocol-Independent Routing Properties Configuration

Configuring Routing Tables and Routes

Creating Routing Tables

Configuring Static Routes

Configuring the Destination of Static Routes

Configuring the Next Hop for Static Routes

Configuring an Independent Preference for Static Routes

Specifying an LSP as the Next Hop for Static Routes

Installing Static Routes into More than One Routing Table

Configuring CLNS Static Routes

Configuring Static Route Options

Configuring Bidirectional Forwarding Detection

Tracing BFD Protocol Traffic

Overview of BFD Authentication for Static Routes

Configuring BFD Authentication for Static Routes

Configuring Default Routes

Propagating Static Routes into Routing Protocols

Examples: Configuring Static Routes

Configuring Aggregate Routes

Configuring the Destination of Aggregate Routes

Configuring Aggregate Route Options

Applying Policies to Aggregate Routes

Advertising Aggregate Routes

Configuring Generated Routes

Configuring the Destination of Generated Routes

Configuring Generated Route Options

Applying Policies to Generated Routes

Configuring Martian Addresses

Configuring Flow Routes

Applying Filters to the Forwarding Table

Configuring Other Protocol-Independent Routing Properties

Configuring AS Numbers for BGP

Configuring Router Identifiers for BGP and OSPF

Configuring AS Confederation Members

Configuring Route Recording for Flow Aggregation

Creating Routing Table Groups

Configuring How Interface Routes Are Imported into Routing Tables

Configuring Multicast Scoping

Enabling Multicast Forwarding Without PIM

Configuring Additional Source-Specific Multicast Groups

Configuring Multicast Forwarding Cache Limits

Configuring Per-Packet Load Balancing

Configuring Unicast Reverse-Path-Forwarding Check

Configuring Graceful Restart

Configuring Route Distinguishers for VRF and Layer 2 VPN Instances

Configuring Dynamic GRE Tunnels for VPNs

Configuring System Logging for the Routing Protocol Process

Configuring Route Resolution

Enabling Indirect Next Hops

Enabling Nonstop Active Routing

Tracing Global Routing Protocol Operations

Disabling Distributed Periodic Packet Management on the Packet Forwarding Engine

Enabling Source Routing

Delaying Updates of the MED Path Attribute for BGP

Creating Policies to Control Label Allocation and Substitution for MPLS Ingress and AS Border Routers

Configuring Logical Systems

Logical Systems Overview

Logical System Configuration Statements

Minimum Logical System Configuration

Configuring a Logical System

logical-systems

Summary of Protocol-Independent Routing Properties Configuration Statements

bfd-liveness-detection

med-igp-update-interval

route-distinguisher-id

Introduction to Routing Instances
Routing Instances Overview

Routing Instances Configuration Guidelines

Complete Routing Instances Configuration Statements

Routing Instances Minimum Configuration

Configuring Multiple Instances of BGP

Configuring Multiple Instances of IS-IS

Configuring Multiple Instances of LDP

Configuring Multiple Instances of MSDP

Configuring Multiple Instances of OSPF

Configuring Multiple Instances of PIM

Configuring Multiple Instances of RIP

Configuring Routing Instances

Specifying the Instance Type for Routing Instances

Configuring Route Distinguishers for Routing Instances

Configuring Filter-Based Forwarding

Configuring Class-of-Service-Based Forwarding

Configuring Secondary VRF Import and Export Policy

Configuring Policy-Based Export for Routing Instances

Configuring VRF Table Labels

Configuring VRF Targets

Configuring OSPF Domain IDs for VPNs

Configuring Route Limits for Routing Tables

Configuring Independent AS Domains

Summary of Routing Instances Configuration Statements

Introduction to Multitopology Routing

Multitopology Routing Overview

Multitopology Routing Standards

Multitopology Routing Configuration Guidelines

Configuring Topologies

Configuring Multitopology Routing in OSPF

Configuring Multitopology Routing in Static Routes

Configuring Multitopology Routing in BGP

BGP Route Resolution in Multitopology Routing

Configuring Filter-Based Forwarding for Multitopology Routing

Summary of Multitopology Routing Configuration Statements

Introduction to IS-IS

IS-IS Overview

IS-IS Extensions to Support Traffic Engineering

IS-IS Extensions to Support Route Tagging

IS-IS Standards

IS-IS Configuration Guidelines

Configuring IS-IS

Minimum IS-IS Configuration

Configuring IS-IS Authentication

Configuring of Interface-Specific IS-IS Properties

Configuring BFD for IS-IS

Overview of BFD Authentication for IS-IS

Configuring BFD Authentication for IS-IS

Enabling Packet Checksum on IS-IS Interfaces

Configuring Synchronization Between LDP and IS-IS

Configuring the Transmission Frequency for Link-State PDUs on IS-IS Interfaces

Configuring Mesh Groups of IS-IS Interfaces

Configuring IS-IS Multicast Topologies

Configuring IS-IS IPv6 Unicast Topologies

Configuring Point-to-Point Interfaces for IS-IS

Configuring Levels on IS-IS Interfaces

Configuring the Reference Bandwidth Used in IS-IS Metric Calculations

Limiting the Number of Advertised IS-IS Areas

Enabling Wide IS-IS Metrics for Traffic Engineering

Configuring Preference Values for IS-IS Routes

Limiting the Number of Prefixes Exported to IS-IS

Configuring Link-State PDU Lifetime for IS-IS

Advertising Label-Switched Paths into IS-IS

Configuring IS-IS to Make Routing Devices Appear Overloaded

Configuring SPF Options for IS-IS

Configuring Graceful Restart for IS-IS

Configuring IS-IS for Multipoint Network Clouds

Configuring IS-IS Traffic Engineering Attributes

Enabling Authentication for IS-IS Without Network-Wide Deployment

Configuring Quicker Advertisement of IS-IS Adjacency State Changes

Enabling Padding of IS-IS Hello Packets

Configuring CLNS for IS-IS

Disabling IS-IS

Disabling IPv4 Routing for IS-IS

Disabling IPv6 Routing for IS-IS

Applying Policies to Routes Exported to IS-IS

Installing a Default Route to the Nearest Routing Device That Operates at Both IS-IS Levels

Configuring Loop-Free Alternate Routes for IS-IS

Tracing IS-IS Protocol Traffic

Summary of IS-IS Configuration Statements

authentication-key

authentication-type

bfd-liveness-detection

hello-authentication-key

hello-authentication-type

ipv4-multicast-metric

ipv6-multicast

ipv6-multicast-metric

loose-authentication-check

no-adjacency-holddown

no-authentication-check

no-csnp-authentication

no-eligible-backup

no-hello-authentication

Introduction to OSPF

Understanding OSPF Areas

Overview of Packets

OSPF External Metrics Overview

OSPF Designated Router Overview

OSPF Extensions to Support Traffic Engineering

OSPF Standards

OSPF Configuration Guidelines

Configuring OSPF

Minimum OSPF Configuration

Configuring OSPF Areas

Disabling Export of LSAs into NSSAs Attached to ASBR ABRs

Disabling OSPFv2 Compatibility with RFC 1583

Configuring OSPF on Interfaces

Configuring Multiarea Adjacency in OSPFv2

Configuring Multiple Address Families for OSPFv3

Configuring Authentication for OSPFv2

Configuring Authentication for OSPFv3

Limiting the Number of Prefixes Exported to OSPF

Configuring the Designated Router Priority for OSPF

Summarizing Ranges of Routes in OSPF Link-State Advertisements

Configuring the Metric Value for OSPF Interfaces

Dynamically Adjusting OSPF Interface Metrics Based on Bandwidth

Configuring Preference Values for OSPF Routes

Configuring OSPF Timers

Configuring OSPF Refresh and Flooding Reduction in Stable Topologies

Configuring BFD for OSPF

Overview of BFD Authentication for OSPF

Configuring BFD Authentication for OSPF

Configuring Synchronization Between LDP and IGPs

Configuring Graceful Restart for OSPF and OSPFv3

Configuring SPF Options for OSPF

Advertising Interface Addresses Without Running OSPF

Configuring OSPF Passive Traffic Engineering Mode

Advertising Label-Switched Paths into OSPF

Configuring OSPF to Make Routing Devices Appear Overloaded

Enabling OSPF Traffic Engineering Support

Configuring the OSPF Metric Value Used for Traffic Engineering

Applying Policies to OSPF Routes

Configuring OSPF Routing Table Groups

Configuring OSPF Sham Links

Configuring OSPF Peer Interfaces

Loop-Free Alternate Routes for OSPF Overview

Configuring Link Protection for OSPF

Excluding an OSPF Interface as a Backup for a Protected Interface

Configuring Backup SPF Options for Protected OSPF Interfaces

Configuring RSVP Label-Switched Paths as Backup Paths for OSPF

Tracing OSPF Protocol Traffic

Summary of OSPF Configuration Statements

bandwidth-based-metrics

bfd-liveness-detection

inter-area-prefix-export

inter-area-prefix-import

lsp-metric-into-summary

network-summary-export

network-summary-import

Introduction to RIP

RIP Configuration Guidelines

Configuring RIP

Minimum RIP Configuration

Overview of RIP Global Properties

Overview of RIP Neighbor Properties

Configuring Authentication for RIP

Configuring BFD for RIP

Overview of BFD Authentication for RIP

Configuring BFD Authentication for RIP

Accepting RIP Packets with Nonzero Values in Reserved Fields

Applying Policies to RIP Routes Imported from Neighbors

Configuring the Number of Route Entries in RIP Update Messages

Configuring the Metric Value Added to Imported RIP Routes

Configuring RIP Update Messages

Configuring Routing Table Groups for RIP

Configuring RIP Timers

Configuring Group-Specific RIP Properties

Configuring Graceful Restart for RIP

Disabling Strict Address Checking for RIP Messages

Tracing RIP Protocol Traffic

Example: Configuring RIP

Summary of RIP Configuration Statements

any-sender

authentication-key

authentication-type

bfd-liveness-detection

Introduction to RIPng

RIPng Overview

RIPng Standards

RIPng Configuration Guidelines

Configuring RIPng

Minimum RIPng Configuration

Overview of RIPng Global Properties

Overview of RIPng Neighbor Properties

Applying Policies to RIPng Routes Imported from Neighbors

Configuring the Metric Value Added to Imported RIPng Routes

Configuring RIPng Update Messages

Configuring RIPng Timers

Configuring Group-Specific RIPng Properties

Configuring Graceful Restart for RIPng

Tracing RIPng Protocol Traffic

Summary of RIPng Configuration Statements

Introduction to ICMP Router Discovery

ICMP Router Discovery Overview

ICMP Router Discovery Standards

ICMP Router Discovery Configuration Guidelines

Configuring ICMP Router Discovery

Minimum ICMP Router Discovery Configuration

Configuring the Addresses Included in ICMP Router Advertisements

Configuring the Frequency of ICMP Router Advertisements

Modifying the Lifetime in ICMP Router Advertisements

Tracing ICMP Protocol Traffic

Summary of ICMP Router Discovery Configuration Statements

max-advertisement-interval

min-advertisement-interval

multicast

priority

router-discovery

Introduction to Neighbor Discovery

Neighbor Discovery Overview

Neighbor Discovery Standards

Neighbor Discovery Configuration Guidelines

Configuring Neighbor Discovery

Minimum Neighbor Discovery Configuration

Configuring an Interface to Send Neighbor Discovery Advertisements

Configuring the Hop Count in Outgoing Neighbor Discovery Packets

Configuring the Lifetime for the Default Neighbor Discovery Router

Enabling Stateful Autoconfiguration with Neighbor Discovery

Configuring the Frequency of Neighbor Discovery Advertisements

Configuring the Delay Before Neighbor-Discovery Neighbors Mark the Router as Down

Configuring the Frequency of Neighbor Solicitation Messages

Configuring the Prefix Information Included in Neighbor Discovery Advertisements

Tracing Neighbor Discovery Protocol Traffic

Summary of Neighbor Discovery Router Advertisement Configuration Statements

managed-configuration

max-advertisement-interval

min-advertisement-interval

on-link

other-stateful-configuration

Secure Neighbor Discovery Configuration Guidelines

Secure Neighbor Discovery Configuration Overview

Configuring Secure Neighbor Discovery

Enabling Secure Neighbor Discovery

Configuring Cryptographically Generated Addresses for Secure Neighbor Discovery

Configuring Timestamps for Secure Neighbor Discovery

Tracing Secure Neighbor Discovery Protocol Traffic

Summary of Secure Neighbor Discovery Configuration Statements

cryptographic-address

Introduction to BGP

Overview of BGP Messages

BGP Standards

BGP Configuration Guidelines

Configuring BGP

Minimum BGP Configuration

Enabling BGP

Configuring BGP Groups and Peers

Examples: Configuring BGP Groups, Peers, and Confederations

Configuring the Delay Before BGP Peers Mark the Routing Device as Down

Configuring MTU Discovery for BGP Sessions

Configuring Graceful Restart for BGP

Advertising Explicit Null Labels to BGP Peers

Configuring Aggregate Labels for VPNs

Configuring Authentication for BGP

Using IPsec to Protect BGP Traffic

Disabling Transmission of Open Requests to BGP Peers

Configuring a Local Endpoint Address for BGP Sessions

Configuring the MED in BGP Updates

Controlling BGP Route Aggregation

Configuring EBGP Multihop Sessions

Configuring Single-Hop EBGP Peers to Accept Remote Next Hops

Configuring the Local Preference Value for BGP Routes

Configuring the Default Preference Value for BGP Routes

Configuring Routing Table Path Selection for BGP

Selecting Multiple Equal-Cost Active Paths

Configuring a Local AS for EBGP Sessions

Removing Private AS Numbers from AS Paths

Configuring BGP Route Reflection

Configuring Flap Damping for BGP Routes

Enabling Multiprotocol BGP

Enabling BGP to Carry Flow-Specification Routes

Enabling BGP to Carry CLNS Routes

Enabling BGP Route Target Filtering

Applying Filters Provided by BGP Peers to Outbound Routes

Enabling Layer 2 VPN and VPLS Signaling

Applying Policies to BGP Routes

Preventing Automatic Reestablishment of BGP Peering Sessions After NSR Switchovers

Configuring EBGP Peering Using IPv6 Link-Local Addresses

Configuring IPv6 BGP Routes over IPv4 Transport

Configuring System Logging of BGP Peer State Transitions

Configuring a Text Description for BGP Groups or Peers

Restricting TCP Connections to BGP Peers

Applying BGP Export Policy to VRF Routes

Including Next-Hop Reachability Information in Multiprotocol Updates

Configuring BFD for BGP

Overview of BFD Authentication for BGP

Limiting TCP Segment Size for BGP

Configuring the BGP Monitoring Protocol

Tracing BGP Protocol Traffic

Summary of BGP Configuration Statements

accept-remote-nexthop

accepted-prefix-limit

authentication-algorithm

authentication-key

authentication-key-chain

bfd-liveness-detection

idle-after-switch-over

outbound-route-filter