Cisco NCS 5500 Series Configuration Guide

Configure BGP Additional Paths 23
BGP Maximum Prefix 25
Configure Discard Extra Paths 25
BGP Best-External Path 27
Configure Best-External Path Advertisement 28
BGP Local Label Retention 29
Retain Allocated Local Label for Primary Path 29
iBGP Multipath Load Sharing 30
Configure iBGP Multipath Load Sharing 30
Route Dampening 32
Configuring BGP Route Dampening 32
Routing Policy Enforcement 33
Apply Policy When Updating Routing Table 33
Configure BGP Neighbor Group and Neighbors 35
Disable BGP Neighbor 38
Resetting Neighbors Using BGP Inbound Soft Reset 39
Resetting Neighbors Using BGP Outbound Soft Reset 40
Reset Neighbors Using BGP Hard Reset 41
Configure Software to Store Updates from Neighbor 42
Log Neighbor Changes 43
BGP Route Reflectors 43
Configure Route Reflector for BGP 44
Configure BGP Route Filtering by Route Policy 46
Configure BGP Attribute Filtering 47
BGP Next Hop Tracking 49
Configure BGP Next-Hop Trigger Delay 49
Disable Next-Hop Processing on BGP Updates 50
BGP Cost Community 51
Configure BGP Cost Community 51
Configure BGP Community and Extended-Community Advertisements 54
Redistribute iBGP Routes into IGP 56
Redistribute IGPs to BGP 57
Update Groups 58
Monitor BGP Update Groups 59
L3VPN iBGP PE-CE 60
BGP Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
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Contents

Cisco NCS 5500 Series Specifications

General

Series	NCS 5500
Category	Network Router
Operating System	Cisco IOS XR
Product Type	Modular Router
Form Factor	Rack-mountable
Purpose	High-performance routing for service providers and large enterprises
Interface Types	Ethernet
Redundancy	Redundant power supplies and fan trays
Port Density	Varies by model; high-density configurations available
Routing Protocols	BGP, OSPF, IS-IS, MPLS
Power Supply Options	AC and DC power supplies available
Management	CLI, SNMP, NETCONF