Table of Contents - JUNOS 9.6 Routing Protocols Configuration Guide

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About This Guide

JUNOS Documentation and Release Notes

Objectives

Audience

Supported Platforms

Using the Indexes

Using the Examples in This Manual

Documentation Conventions

Documentation Feedback

Requesting Technical Support

Overview

Routing Protocols Concepts

Routing Databases Overview

Routing Protocol Databases
JUNOS Routing Tables
Forwarding Tables
How the Routing and Forwarding Tables Are Synchronized

Route Preferences Overview

Alternate and Tiebreaker Preferences
Multiple Active Routes

How the Active Route Is Determined

Default Route Preference Values

Equal-Cost Paths and Load Sharing

IPv6 Overview

IPv6 Packet Headers

Header Structure
Extension Headers

IPv6 Addressing

Address Representation
Address Types
Address Scope
Address Structure

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

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

Example: 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

Example: Configuring Independent Preferences for an IPv4 Static Route
Example: Configuring Independent Preferences for an IPv6 Static Route
Example: Configuring Independent Preferences for an Unnumbered Ethernet Interface

Specifying an LSP as the Next Hop for Static Routes

Installing Static Routes into More than One Routing Table

Examples: Installing a Static Route into More than One Routing Table

Configuring CLNS Static Routes

Example: Configuring a Static CLNS Route

Configuring Static Route Options

Configuring a Metric Value for Static Routes
Configuring a Preference Value for Static Routes
Associating BGP Communities with Static Routes
Associating AS Paths with Static Routes
Configuring an OSPF Tag String for Static Routes
Controlling Temporary Installation of Static Routes in the Forwarding Table
Controlling Retention of Static Routes in the Forwarding Table
Controlling Retention of Inactive Static Routes in the Routing and Forwarding Tables
Controlling Readvertisement of Static Routes
Controlling Resolution of Static Routes to Prefixes That Are Not Directly Connected

Configuring Bidirectional Forwarding Detection

Tracing BFD Protocol Traffic

Overview of BFD Authentication for Static Routes

BFD Authentication Algorithms
Security Authentication Keychains
Strict Versus Loose Authentication

Configuring BFD Authentication for Static Routes

Configuring the BFD Authentication Parameters
Viewing Authentication Information for BFD Sessions

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

Configuring a Metric Value for Aggregate Routes
Configuring a Preference Value for Aggregate Routes
Configuring the Next Hop for Aggregate Routes
Associating BGP Communities with Aggregate Routes
Associating AS Paths with Aggregate Routes
Including AS Numbers in Aggregate Route Paths
Configuring an OSPF Tag String for Aggregate Routes
Controlling Retention of Inactive Aggregate Routes in the Routing and Forwarding Tables

Applying Policies to Aggregate Routes

Advertising Aggregate Routes

Configuring Generated Routes

Configuring the Destination of Generated Routes

Configuring Generated Route Options

Configuring a Metric Value for Generated Routes
Configuring a Preference Value for Generated Routes
Configuring the Next Hop for Generated Routes
Associating BGP Communities with Generated Routes
Associating AS Paths with Generated Routes
Configuring an OSPF Tag String for Generated Routes
Including AS Numbers in Generated Route Paths
Controlling Retention of Inactive Generated Routes in the Routing and Forwarding Tables

Applying Policies to Generated Routes

Configuring Martian Addresses

Adding Martian Addresses
Deleting Martian Addresses

Configuring Flow Routes

Configuring Match Conditions for Flow Routes
Configuring the Action for Flow Routes
Validating 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

Examples: Creating Routing Table Groups

Configuring How Interface Routes Are Imported into Routing Tables

Configuring Multicast Scoping

Example: Configuring Multicast Scoping

Enabling Multicast Forwarding Without PIM

Configuring Additional Source-Specific Multicast Groups

Configuring Multicast Forwarding Cache Limits

Configuring Per-Packet Load Balancing

Examples: Configuring Per-Packet Load Balancing

Configuring Unicast Reverse-Path-Forwarding Check

Example: Configuring Unicast RPF

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

Examples: Configuring System Logging for the Routing Protocol Process

Configuring Route Resolution

Enabling Indirect Next Hops

Enabling Nonstop Active Routing

Tracing Global Routing Protocol Operations

Examples: 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

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

autonomous-system

bfd

bfd-liveness-detection

destination-networks

independent-domain

indirect-next-hop

interface (Multicast via Static Routes)
interface (Multicast Scoping)

med-igp-update-interval

metric

metric (Aggregate, Generated, or Static Route)
metric (Qualified Next Hop on Static Route)

p2mp-lsp-next-hop

qualified-next-hop

rib (General)
rib (Route Resolution)

rib-group

rib-groups

route-distinguisher-id

unicast-reverse-path

Routing Instances

Introduction to Routing Instances

Routing Instances Overview

Routing Instances Configuration Guidelines

Complete Routing Instances Configuration Statements

Routing Instances Minimum Configuration

Minimum Routing-Instance Configuration for BGP
Minimum Routing-Instance Configuration for IS-IS
Minimum Routing-Instance Configuration for Layer 2 VPNs
Minimum Routing-Instance Configuration for LDP
Minimum Routing-Instance Configuration for MSDP
Minimum Routing-Instance Configuration for Multiprotocol BGP-Based Multicast VPNs
Minimum Routing-Instance Configuration for OSPF
Minimum Routing-Instance Configuration for OSPFv3
Minimum Routing-Instance Configuration for PIM
Minimum Routing-Instance Configuration for RIP
Minimum Routing-Instance Configuration for VPLS

Configuring Multiple Instances of BGP

Example: Configuring Multiple Instances of BGP

Configuring Multiple Instances of IS-IS

Example: Configuring Multiple Routing Instances of IS-IS

Configuring Multiple Instances of LDP

Configuring Multiple Instances of MSDP

Configuring Multiple Instances of OSPF

Example: Configuring Multiple Routing Instances of OSPF

Configuring Multiple Instances of PIM

Configuring Multiple Instances of RIP

Configuring Routing Instances

Specifying the Instance Type for Routing Instances

Configuring VRF Routing Instances
Configuring Non-VPN VRF Routing Instances
Configuring VPLS 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

Example: Configuring Policy-Based Export for an Overlapping VPN
Example: Configuring Policy-Based Export for a Nonforwarding Instance

Configuring VRF Table Labels

Configuring VRF Targets

Configuring OSPF Domain IDs for VPNs

Examples: Configuring an OSPF Domain ID

Configuring Route Limits for Routing Tables

Configuring Independent AS Domains

Summary of Routing Instances Configuration Statements

access-profile
description
forwarding-options
instance-type
interface
no-vrf-advertise
protocols
route-distinguisher
routing-instances
routing-options
vrf-export
vrf-import
vrf-table-label
vrf-target

Multitopology Routing

Introduction to Multitopology Routing

Multitopology Routing Overview

Routing Table Naming Conventions for Multitopology Routing
Routing Protocol Support for Multitopology Routing
Filter-Based Forwarding Support

Multitopology Routing Standards

Multitopology Routing Configuration Guidelines

Configuring Topologies

Configuring Multitopology Routing in OSPF

Configuring Topologies and SPF Options for MT-OSPF
Configuring a Prefix Export Limit for MT-OSPF
Configuring a Topology to Appear Overloaded
Configuring Interface Properties for MT-OSPF
Disabling MT-OSPF on OSPF Interfaces
Disabling MT-OSPF on Virtual Links
Advertising MPLS Label-Switched Paths into MT-OSPF
Configuring Other MT-OSPF Properties

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

topology (Filter-Based Forwarding)
topology (Multitopology Routing)
topology (OSPF)
topology (OSPF Interface)

topology-id

Interior Gateway Protocols

Introduction to IS-IS

IS-IS Overview

IS-IS Terminology
ISO Network Addresses
IS-IS Packets
Persistent Route Reachability

IS-IS Extensions to Support Traffic Engineering

IS-IS IGP Shortcuts

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

BFD Authentication Algorithms
Security Authentication Keychains
Strict Versus Loose Authentication

Configuring BFD Authentication for IS-IS

Configuring BFD Authentication Parameters
Viewing Authentication Information for BFD Sessions

Enabling Packet Checksum on IS-IS Interfaces

Configuring the Transmission Frequency for CSNP Packets 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

Example: 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

Disabling IS-IS at a Level on IS-IS Interfaces

Example: Disabling IS-IS at a Level

Advertising Interface Addresses Without Running IS-IS

Configuring Authentication for IS-IS Hello Packets

Configuring the Transmission Frequency for IS-IS Hello Packets

Configuring the Delay Before IS-IS Neighbors Mark the Router as Down

Configuring the Metric Value for IS-IS Routes

Configuring the IS-IS Metric Value Used for Traffic Engineering

Configuring Priority to Become the Designated IS-IS Router

Advertising Interface Addresses Without Running IS-IS

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 Routers 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

Configuring IS-IS to Use IGP Shortcuts
Configuring IS-IS to Ignore the Metric of RSVP Label-Switched Paths
Disabling IS-IS Support for Traffic Engineering
Installing IPv4 Routes into the Multicast Routing Table
Configuring IS-IS to Use Protocol Preference to Determine the Traffic Engineering Database Credibility Value

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

Example: 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

Examples: Configuring IS-IS Routing Policy

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

Configuring Loop-Free Alternate Routes for IS-IS

Configuring Link Protection for IS-IS
Configuring Node-Link Protection for IS-IS
Excluding an IS-IS Interface as a Backup for Protected Interfaces
Configuring RSVP Label-Switched Paths as Backup Paths for IS-IS
Using Operational Mode Commands to Monitor Protected IS-IS Routes
Example: Configuring Node-LInk Protection for IS-IS Routes

Tracing IS-IS Protocol Traffic

Examples: Tracing IS-IS Protocol Traffic

Summary of IS-IS Configuration Statements

authentication-key

authentication-type

bfd-liveness-detection

disable (IS-IS)
disable (LDP Synchronization)

export

external-preference

family

graceful-restart

hello-authentication-key

hello-authentication-type

hello-interval

hello-padding

hold-time

hold-time (IS-IS)
hold-time (LDP Synchronization)

ignore-attached-bit

ignore-lsp-metrics

interface

ipv4-multicast

ipv4-multicast-metric

ipv6-multicast

ipv6-multicast-metric

ipv6-unicast

ipv6-unicast-metric

isis

label-switched-path

ldp-synchronization

level

level (Global IS-IS)
level (IS-IS Interfaces)

link-protection

loose-authentication-check

multicast-rpf-routes

no-adjacency-holddown

no-authentication-check

no-csnp-authentication

no-eligible-backup

no-hello-authentication

no-ipv4-multicast

no-ipv4-routing

no-ipv6-multicast

no-ipv6-routing

no-ipv6-unicast

no-psnp-authentication

no-unicast-topology

node-link-protection

prefix-export-limit

priority

reference-bandwidth

traffic-engineering

wide-metrics-only

ES-IS Overview

Overview

ES-IS Configuration Guidelines

ES-IS Configuration Overview
Configuring ES-IS
Minimum ES-IS Configuration
Configuring ES-IS on Interfaces
Configuring the Transmission Frequency for ES-IS Hello Packets
Configuring the End System Configuration Timer for ES-IS
Configuring Graceful Restart for ES-IS
Configuring the Preference Value for ES-IS
Tracing ES-IS Protocol Traffic

Summary of ES-IS Configuration Statements

disable
end-system-configuration-timer
esis
graceful-restart
hello-interval
interface
preference
traceoptions

Introduction to OSPF

OSPF Overview

OSPF Routing Algorithm
OSPF Version 3

Understanding OSPF Areas

Areas
Area Border Routers
Backbone Areas
AS Boundary Routers
Stub Areas
Not-So-Stubby Areas
Transit Areas

Overview of Packets

OSPF Packet Header
Hello Packets
Database Description Packets
Link-State Request Packets
Link-State Update Packets
Link-State Acknowledgment Packets
Link-State Advertisement Packet Types

OSPF External Metrics Overview

OSPF Designated Router Overview

OSPF Extensions to Support Traffic Engineering

Configuring OSPF IGP Shortcuts

OSPF Standards

OSPF Configuration Guidelines

Configuring OSPF

Minimum OSPF Configuration

Configuring OSPF Areas

Configuring the OSPF Backbone Area

Configuring OSPF Nonbackbone Areas

Configuring OSPF Stub Areas

Configuring OSPF Not-So-Stubby Areas

Configuring OSPF Virtual Links

Example: Configuring an OSPF Virtual Link

Disabling Export of LSAs into NSSAs Attached to ASBR ABRs

Disabling OSPFv2 Compatibility with RFC 1583

Configuring OSPF on Interfaces

Configuring an Interface on a Broadcast or Point-to-Point Network
Configuring an Interface on a Point-to-Multipoint Network
Configuring an Interface on a Nonbroadcast, Multiaccess Network
Configuring an OSPF Demand Circuit Interface

Configuring Multiarea Adjacency in OSPFv2

Configuring Multiple Address Families for OSPFv3

Configuring Authentication for OSPFv2

Example: Configuring IPsec Authentication for an OSPFv2 Interface
Example: Configuring a Transition of MD5 Keys
Example: Configuring MD5 Authentication

Configuring Authentication for OSPFv3

Limiting the Number of Prefixes Exported to OSPF

Configuring Priority to Become the Designated OSPF Router

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

Modifying the Hello Interval
Controlling the LSA Retransmission Interval
Modifying the Router Dead Interval
Specifying the Transit Delay

Configuring OSPF Refresh and Flooding Reduction in Stable Topologies

Configuring BFD for OSPF

Overview of BFD Authentication for OSPF

BFD Authentication Algorithms
Security Authentication Keychains
Strict Versus Loose Authentication

Configuring BFD Authentication for OSPF

Configuring BFD Authentication Parameters
Viewing Authentication Information for BFD Sessions

Configuring Synchronization Between LDP and IGPs

Configuring Graceful Restart for OSPF

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 Routers Appear Overloaded

Enabling OSPF Traffic Engineering Support

Example: Enabling OSPF Traffic Engineering Support

Configuring the OSPF Metric Value Used for Traffic Engineering

Applying Policies to OSPF Routes

Configuring Import and Export Policies for Network Summaries
Configuring Priority for Prefixes in Import Policy
Example: Configuring a Route Filter Policy to Specify Priority for Prefixes Learned Through OSPF

Configuring OSPF Routing Table Groups

Configuring OSPF Sham Links

Configuring OSPF Peer Interfaces

Tracing OSPF Protocol Traffic

Examples: Tracing OSPF Protocol Traffic

Summary of OSPF Configuration Statements

area

area-range

authentication

bandwidth-based-metrics

bfd-liveness-detection

disable (LDP Synchronization)
disable (OSPF)

domain-id

domain-vpn-tag

export

external-preference

ignore-lsp-metrics

import

inter-area-prefix-export

inter-area-prefix-import

interface

interface-type

ipsec-sa

label-switched-path

ldp-synchronization

lsp-metric-into-summary

network-summary-export

network-summary-import

prefix-export-limit

priority

realm

reference-bandwidth

retransmit-interval

rib-group

route-type-community

traffic-engineering

traffic-engineering (OSPF)
traffic-engineering (Passive TE Mode)

transit-delay

transmit-interval

type-7

virtual-link

Introduction to RIP

RIP Overview

RIP Protocol Overview
RIP Packets

RIP Standards

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

BFD Authentication Algorithms
Security Authentication Keychains
Strict Versus Loose Authentication

Configuring BFD Authentication for RIP

Configuring BFD Authentication Parameters
Viewing Authentication Information for BFD Sessions

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

Applying Policies to Routes Exported by RIP
Configuring the Default Preference Value for RIP
Configuring the Metric for Routes Exported by RIP

Configuring Graceful Restart for RIP

Disabling Strict Address Checking for RIP Messages

Tracing RIP Protocol Traffic

Example: Tracing RIP Protocol Traffic

Example: Configuring RIP

Summary of RIP Configuration Statements

any-sender
authentication-key
authentication-type
bfd-liveness-detection
check-zero
export
graceful-restart
group
holddown
import
message-size
metric-in
metric-out
neighbor
no-check-zero
preference
receive
rib-group
rip
route-timeout
send
traceoptions
update-interval

Introduction to RIPng

RIPng Overview

RIPng Protocol Overview
RIPng Packets

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

Applying Policies to Routes Exported by RIPng
Configuring the Default Preference Value for RIPng
Configuring the Metric for Routes Exported by RIPng

Configuring Graceful Restart for RIPng

Tracing RIPng Protocol Traffic

Example: Configuring RIPng

Summary of RIPng Configuration Statements

export
graceful-restart
group
holddown
import
metric-in
metric-out
neighbor
preference
receive
ripng
route-timeout
send
traceoptions
update-interval

Introduction to ICMP Router Discovery

ICMP Router Discovery Overview

Operation of a Router Discovery Server
Router Advertisement Messages

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

Example: Tracing ICMP Protocol Traffic

Summary of ICMP Router Discovery Configuration Statements

address
advertise
broadcast
disable
ignore
ineligible
interface
lifetime
max-advertisement-interval
min-advertisement-interval
multicast
priority
router-discovery
traceoptions

Introduction to Neighbor Discovery

Neighbor Discovery Overview

Router Discovery
Address Resolution
Redirect

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

Setting the Prefix for Onlink Determination
Setting the Prefix for Stateless Address Autoconfiguration
Configuring the Preferred Lifetime
Configuring the Valid Lifetime

Tracing Neighbor Discovery Protocol Traffic

Summary of Neighbor Discovery Router Advertisement Configuration Statements

autonomous
current-hop-limit
default-lifetime
interface
managed-configuration
max-advertisement-interval
min-advertisement-interval
no-autonomous
no-managed-configuration
no-on-link
no-other-stateful-configuration
on-link
other-stateful-configuration
preferred-lifetime
prefix
reachable-time
retransmit-timer
router-advertisement
traceoptions
valid-lifetime

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

Specifying the Pathname for the Key File
Specifying the RSA Key Length

Configuring Timestamps for Secure Neighbor Discovery

Tracing Secure Neighbor Discovery Protocol Traffic

Summary of Secure Neighbor Discovery Configuration Statements

cryptographic-address
key-length
key-pair
neighbor-discovery
secure
security-level
timestamp
traceoptions

BGP

Introduction to BGP

BGP Overview

Autonomous Systems
AS Paths and Attributes
External and Internal BGP

BGP Routes Overview

Overview of BGP Messages

Open Messages
Update Messages
Keepalive Messages
Notification Messages

BGP Standards

BGP Configuration Guidelines

Configuring BGP

Minimum BGP Configuration

Enabling BGP

Specifying the Local Router’s AS Number
Defining an AS Confederation and Its Members
Assigning a BGP Identifier
Defining BGP Global Properties

Configuring BGP Groups and Peers

Defining a Group with Static Peers

Example: Defining a Large Number of Groups with Static Peers
Example: Defining a Small Number of Groups with Static Peers for Better Scalability

Defining a Group with Dynamic Peers

Defining the Group Type

Specifying the Peer’s AS Number

Defining Group Properties

Defining Peer Properties

Examples: Configuring BGP Groups, Peers, and Confederations

Configuring the Delay Before BGP Peers Mark the Router 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

Defining a MED Metric Directly
Using Routing Policy to Define a MED Metric
Examples: Configuring the MED Metric

Controlling BGP Route Aggregation

Configuring EBGP Multihop Sessions

Configuring Single-Hop EBGP Peers to Accept Remote Next Hops

Example: Configure an Import Routing Policy for an EBGP Peer to Accept a Remote Next Hop

Configuring the Local Preference Value for BGP Routes

Configuring the Default Preference Value for BGP Routes

Examples: Configuring BGP Route Preference

Configuring Routing Table Path Selection for BGP

Example: Always Comparing MEDs

Selecting Multiple Equal-Cost Active Paths

Configuring a Local AS for EBGP Sessions

Examples: Configuring a Local AS

Removing Private AS Numbers from AS Paths

Configuring BGP Route Reflection

Examples: Configuring BGP Route Reflection

Configuring Flap Damping for BGP Routes

Enabling Multiprotocol BGP

Limiting the Number of Prefixes Received on a BGP Peering Session
Limiting the Number of Prefixes Accepted on a BGP Peering Session
Configuring BGP Routing Table Groups
Resolving Routes to PE Routers Located in Other ASs
Allowing Labeled and Unlabeled Routes

Enabling BGP to Carry Flow-Specification Routes

Configuring Flow-Specification Routes for IPv4 Unicast
Configuring Flow-Specification Routes for Layer 3 VPNs

Enabling BGP to Carry CLNS Routes

Example: Enabling CLNS Between Two Routers
Example: Configuring CLNS Within a VPN

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

Applying Routing Policy

Applying Policies to Routes Being Imported into the Routing Table from BGP
Applying Policies to Routes Being Exported from the Routing Table into BGP

Setting BGP to Advertise Inactive Routes

Configuring BGP to Advertise the Best External Route to Internal Peers

Configuring How Often BGP Exchanges Routes with the Routing Table

Disabling Suppression of Route Advertisements

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

Example: 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

BFD Authentication Algorithms
Security Authentication Keychains
Strict Versus Loose Authentication

Configuring BFD Authentication for BGP

Configuring BFD Authentication Parameters
Viewing Authentication Information for BFD Sessions

Limiting TCP Segment Size for BGP

Configuring the BGP Monitoring Protocol

Tracing BGP Protocol Traffic

Examples: Tracing BGP Protocol Traffic

Summary of BGP Configuration Statements

accept-remote-nexthop
accepted-prefix-limit
advertise-external
advertise-inactive
advertise-peer-as
aggregate-label
allow
as-override
authentication-algorithm
authentication-key
authentication-key-chain
bfd-liveness-detection
bgp
bgp-orf-cisco-mode
bmp
cluster
damping
description
disable
explicit-null
export
family
flow
graceful-restart
group
hold-time
idle-after-switch-over
import
include-mp-next-hop
ipsec-sa
iso-vpn
keep
labeled-unicast
local-address
local-as
local-interface
local-preference
log-updown
metric-out
mtu-discovery
multihop
multipath
neighbor
no-advertise-peer-as
no-aggregator-id
no-client-reflect
no-validate
out-delay
outbound-route-filter
passive
path-selection
peer-as
preference
prefix-limit
remove-private
resolve-vpn
rib
rib-group
route-target
tcp-mss
traceoptions
type
vpn-apply-export

Indexes

Index
Index of Statements and Commands

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