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Router Configuration Guide R15.0.R1 ROUTER CONFIGURATION GUIDE RELEASE 15.0.R1 7450 ETHERNET SERVICE SWITCH 7750 SERVICE ROUTER 7950 EXTENSIBLE ROUTING SYSTEM ROUTER CONFIGURATION GUIDE RELEASE 15.0.R1 3HE 11976 AAAA TQZZA 01 Issue: 01 March 2017 Nokia — Proprietary and confidential. Use pursuant to applicable agreements. ROUTER CONFIGURATION GUIDE RELEASE 15.0.R1 Nokia is a registered trademark of Nokia Corporation. Other products and company names mentioned herein may be trademarks or tradenames of their respective owners. The information presented is subject to change without notice. No responsibility is assumed for inaccuracies contained herein. © 2017 Nokia. Contains proprietary/trade secret information which is the property of Nokia and must not be made available to, or copied or used by anyone outside Nokia without its written authorization. Not to be used or disclosed except in accordance with applicable agreements. 2 3HE 11976 AAAA TQZZA 01 Issue: 01 ROUTER CONFIGURATION GUIDE RELEASE 15.0.R1 Table of Contents 1 Getting Started..............................................................................11 1.1 About This Guide.......................................................................................11 1.2 In This Chapter..........................................................................................12 1.3 Router Configuration Process ...................................................................12 2 IP Router Configuration ..............................................................13 2.1 In This Chapter..........................................................................................13 2.2 Configuring IP Router Parameters ............................................................14 2.2.1 Interfaces...................................................................................................14 2.2.1.1 Network Interface ......................................................................................14 2.2.1.2 Network Domains ......................................................................................15 2.2.1.3 System Interface........................................................................................16 2.2.1.4 Unicast Reverse Path Forwarding Check (uRPF) .....................................16 2.2.1.5 Creating an IP Address Range..................................................................17 2.2.1.6 QoS Policy Propagation Using BGP (QPPB) ............................................18 2.2.1.7 QPPB.........................................................................................................20 2.2.1.8 QPPB and GRT Lookup ............................................................................25 2.2.2 Router ID ...................................................................................................27 2.2.3 Autonomous Systems (AS) .......................................................................28 2.2.4 Confederations ..........................................................................................29 2.2.5 Proxy ARP.................................................................................................30 2.2.6 Exporting an Inactive BGP Route from a VPRN........................................31 2.2.7 DHCP Relay ..............................................................................................31 2.2.8 Internet Protocol Versions .........................................................................31 2.2.8.1 IPv6 Address Format.................................................................................33 2.2.8.2 IPv6 Applications.......................................................................................34 2.2.8.3 DNS...........................................................................................................36 2.2.8.4 Secure Neighbor Discovery (SeND)..........................................................36 2.2.8.5 SeND Persistent CGAs .............................................................................38 2.2.8.6 IPv6 Provider Edge Router over MPLS (6PE)...........................................43 2.2.9 Static Route Resolution Using Tunnels.....................................................45 2.2.9.1 Static Route ECMP Support .....................................................................47 2.3 Weighted Load-Balancing over MPLS LSP...............................................47 2.3.1 Weighted Load Balancing IGP, BGP, and Static Route Prefix Packets over IGP Shortcut ........................................................................48 2.3.1.1 Feature Configuration................................................................................48 2.3.1.2 Feature Behavior.......................................................................................49 2.3.1.3 ECMP Considerations ...............................................................................50 2.3.1.4 Weighted Load Balancing Static Route Packets over MPLS LSP.............51 2.4 Bidirectional Forwarding Detection............................................................52 2.4.1 BFD Control Packet...................................................................................53 2.4.2 Control Packet Format...............................................................................53 2.4.3 BFD for RSVP-TE......................................................................................55 2.4.4 Echo Support.............................................................................................55 2.4.5 BFD Support for BGP................................................................................56 Issue: 01 3HE 11976 AAAA TQZZA 01 3 ROUTER CONFIGURATION GUIDE RELEASE 15.0.R1 2.4.6 Centralized BFD ........................................................................................56 2.4.6.1 IES Over Spoke SDP ................................................................................56 2.4.6.2 BFD Over LAG and VSM Interfaces .........................................................57 2.4.6.3 LSP BFD and VCCV BFD .........................................................................58 2.4.7 Aggregate Next Hop ..................................................................................58 2.4.8 Invalidate Next-Hop Based on ARP/Neighbor Cache State ......................59 2.4.8.1 Invalidate Next-Hop Based on IPV4 ARP..................................................59 2.4.8.2 Invalidate Next-Hop Based on Neighbor Cache State ..............................59 2.4.9 LDP Shortcut for IGP Route Resolution ....................................................60 2.4.9.1 IGP Route Resolution................................................................................60 2.4.9.2 LDP-IGP Synchronization..........................................................................61 2.4.9.3 LDP Shortcut Forwarding Plane................................................................61 2.4.9.4 ECMP Considerations ...............................................................................62 2.4.9.5 Handling of Control Packets......................................................................62 2.4.9.6 Handling of Multicast Packets ...................................................................63 2.4.9.7 Interaction with BGP Route Resolution to an LDP FEC ............................63 2.4.9.8 Interaction with Static Route Resolution to an LDP FEC...........................63 2.4.9.9 LDP Control Plane.....................................................................................63 2.5 Weighted Load-Balancing over Interface Next-hops.................................64 2.6 GRE Tunnel Overview...............................................................................64 2.6.1 Sample GRE Tunnel Configurations .........................................................66 2.7 Process Overview......................................................................................66 2.8 Configuration Notes...................................................................................67 2.9 Configuring an IP Router with CLI .............................................................69 2.10 Router Configuration Overview .................................................................70 2.10.1 System Interface........................................................................................70 2.10.2 Network Interface ......................................................................................70 2.11 Basic Configuration ..................................................................................71 2.12 Common Configuration Tasks...................................................................71 2.12.1 Configuring a System Name......................................................................72 2.12.2 Configuring Interfaces ...............................................................................73 2.12.2.1 Configuring a System Interface .................................................................73 2.12.2.2 Configuring a Network Interface................................................................73 2.12.2.3 Configuring IPv6 Parameters ....................................................................75 2.12.2.4 Configuring IPv6 Over IPv4 Parameters ...................................................76 2.12.2.5 Tunnel Ingress Node .................................................................................76 2.12.2.6 Tunnel Egress Node..................................................................................79
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