Name: Cisco Nexus 3000 series
Brand: Cisco
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Cisco Nexus 3000 Series NX-OS Unicast

Routing Configuration Guide,

NX-OS Release 5.0(3)U1(1)

May 2011

Default Chapter4
- Table of Contents4
- Supported Switches19
- Document Conventions21
- Related Documentation22
- Release Notes22
- Obtaining Documentation and Submitting a Service Request23
- Technical References23
- Troubleshooting Guide23
- Autonomous Systems29
- Router Ids29
- Administrative Distance31
- Stub Routing31
- Routing Algorithms32
- Cisco NX-OS Fowarding Architecture34
Fib35
- Layer 3 Virtualization34
- Hardware Forwarding36
- Software Forwarding36
- Summary of Layer 3 Unicast Routing Features36
- Related Topics38
CHAPTER 2 Configuring Ipv441
- Information about Ipv441
Routing57
CHAPTER 3 Configuring Ospfv259
- Information about Ospfv259
- Ospfv2 and the Unicast RIB65
- Authentication65
  - Simple Password Authentication66
  - MD5 Authentication66
- Advanced Features66
Licensing Requirements for Ospfv269
Prerequisites for Ospfv270
Guidelines and Limitations70
Default Settings70
Configuring Basic Ospfv271
- Enabling the Ospfv2 Feature71
- Creating an Ospfv2 Instance72
Configuring Advanced Ospfv272
- Configuring Optional Parameters on an Ospfv2 Instance73
- Configuring Networks in Ospfv274
- Configuring Authentication for an Area76
- Configuring Authentication for an Interface78
- Configuring Advanced Ospfv280
Chapter 4 Configuring EIGRP104
- Configuring EIGRP104
  - Information about EIGRP104
- Diffusing Update Algorithm105
- EIGRP Route Updates105
- Guidelines and Limitations109
- Licensing Requirements for EIGRP109
- Prerequisites for EIGRP109
- Default Settings110
- Configuring Basic EIGRP111
- Configuring Advanced EIGRP115
- Configuring Virtualization for EIGRP127
- Displaying EIGRP Statistics129
- Verifying the EIGRP Configuration129
- Configuration Examples for EIGRP130
- Related Topics130
  - Related Documents131
  - Mibs131
- Feature History for EIGRP131
- Configuring Basic BGP133
Information about Basic BGP133
- BGP Autonomous Systems134
  - 4-Byte as Number Support134
- Administrative Distance134
Chapter 5 Configuring Basic BGP134
- BGP Peers135
Licensing Requirements for Basic BGP139
Prerequisites for BGP139
CLI Configuration Modes140
- Global Configuration Mode140
- Address Family Configuration Mode140
- Neighbor Configuration Mode140
- Neighbor Address Family Configuration Mode140
- Configuring Basic BGP140
- Verifying the Basic BGP Configuration153
- Displaying BGP Statistics155
- Configuration Examples for Basic BGP155
- Related Topics155
- Where to Go Next155
- Additional References155
  - Related Documents156
  - Mibs156
- Feature History for BGP156
- Configuring Advanced BGP157
  - Information about Advanced BGP157
    - Peer Templates158
Guidelines and Limitations for BGP140
Chapter 6 Configuring Advanced BGP158
- Route Policies and Resetting BGP Sessions159
- Ebgp159
- Ibgp159
- BGP Next-Hop Address Tracking163
- Route Redistribution164
- Tuning BGP164
  - BGP Timers164
  - Tuning the Best-Path Algorithm164
- Multiprotocol BGP165
- Virtualization Support165
- Licensing Requirements for Advanced BGP165
- Prerequisites for BGP165
- Configuring Advanced BGP166
- Default Settings166
- Guidelines and Limitations for BGP166
- Configuring RIP198
  - Information about RIP198
Chapter 7 Configuring RIP199
- Virtualization Support200
- Licensing Requirements for RIP200
- Prerequisites for RIP200
- Guidelines and Limitations200
- Default Settings200
- Configuring RIP200
- Verifying the RIP Configuration213
- Displaying RIP Statistics213
- Configuration Examples for RIP214
- Related Topics214
- Additional References214
  - Related Documents215
  - Standards215
- Feature History for RIP215
Information about Static Routing217
Chapter 8 Configuring Static Routing218
- Administrative Distance218
- Directly Connected Static Routes218
- Fully Specified Static Routes218
- Floating Static Routes218
- Remote Next Hops for Static Routes219
- Virtualization Support219
Licensing Requirements for Static Routing219
Prerequisites for Static Routing219
- Guidelines and Limitations219
- Default Settings219
Configuring Static Routing220
- Configuring a Static Route220
- Configuring Virtualization221
Verifying the Static Routing Configuration222
Configuration Examples for Static Routing222
- Additional References222
  - Related Documents223
Feature History for Static Routing223
CHAPTER 9 Configuring Layer 3 Virtualization226
- Layer 3 Virtualization226
- Licensing Requirements for Vrfs229
- Guidelines and Limitations229
- Default Settings230
- Assigning VRF Membership to an Interface231
- Configuring VRF Parameters for a Routing Protocol233
- Configuring a VRF-Aware Service234
- Setting the VRF Scope236
- Related Documents238
- Standards238
- Feature History for VRF238
- Information about the Unicast RIB and FIB239
Managing the Unicast RIB and FIB239
- Managing the Unicast RIB and FIB240
Chapter 10 Managing the Unicast RIB and FIB241
- Configuring Load Sharing in the Unicast FIB242
- Configuring Per-Packet Load Sharing243
- Displaying Routing and Adjacency Information244
- Triggering the Layer 3 Consistency Checker245
- Clearing Forwarding Information in the FIB246
- Estimating Memory Requirements for Routes247
- Clearing Routes in the Unicast RIB247
- Additional References248
  - Related Documents248
- Feature History for Unicast RIB and FIB248
- Verifying the Unicast RIB and FIB Configuration248
CHAPTER 11 Configuring Route Policy Manager249
- Information about Route Policy Manager249
First-Hop Redundancy Protocols267
- Information about HSRP269
  - HSRP Overview270
Chapter 12 Configuring HSRP270
- HSRP for Ipv4271
- HSRP Versions272
- HSRP Authentication272
- HSRP Messages272
- HSRP Load Sharing272
- Object Tracking and HSRP273
- Virtualization Support273
- Default Settings274
- Guidelines and Limitations274
- Licensing Requirements for HSRP274
- Prerequisites for HSRP274
Configuring HSRP275
- Configuring the HSRP Version276
- Configuring an HSRP Group for Ipv4276
- Configuring the HSRP Virtual MAC Address278
- Authenticating HSRP278
- Configuring HSRP Object Tracking280
- Configuring the HSRP Priority282
- Verifying the HSRP Configuration284
  - Related Documents285
Mibs285
- Feature History for HSRP285
- Information about VRRP287
  - VRRP Operation288
Chapter 13 Configuring VRRP288
- VRRP Benefits289
- Multiple VRRP Groups289
- VRRP Router Priority and Preemption290
- VRRP Advertisements291
- VRRP Authentication291
- VRRP Tracking291
- Virtualization Support291
- Default Settings292
- Guidelines and Limitations292
- Licensing Requirements for VRRP292
CHAPTER 14 Configuring Object Tracking307
- Information about Object Tracking307
- Licensing Requirements for Object Tracking309
- Verifying the Object Tracking Configuration319
- Configuration Examples for Object Tracking319
- Related Topics319
- Additional References319
  - Related Documents320
  - Standards320
- Feature History for Object Tracking320
Appendix321
IETF Rfcs321
- BGP Rfcs321
Appendix A IETF RFC322
- G L O S S a R y323

Category	Switch
Latency	Sub-microsecond
Typical Power Consumption	Varies by model
Layer	L2/L3
Management	CLI, SNMP
Port Density	Varies by model
Forwarding Capacity	Up to 2.4 Bpps

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