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IP Routing
Configuration Examples and TechNotes
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Enhanced Interior Gateway Routing Protocol (EIGRP)
Routing Information Protocol (RIP)
Open Shortest Path First (OSPF)
Interior Gateway Routing Protocol (IGRP)
Enhanced Interior Gateway Routing Protocol (EIGRP)
Routing Information Protocol (RIP)
Border Gateway Protocol (BGP)
Classless Interdomain Routing (CIDR)
Multiprotocol BGP (MBGP)
Integrated Intermediate System-to-Intermediate System (IS-IS)
Cisco Optimized Edge Routing (OER)
Interior Gateway Protocol (IGP)
Enhanced Interior Gateway Routing Protocol (EIGRP)
DMVPN to FlexVPN Soft Migration Configuration Example
24/Feb/2014
EIGRP on SVTI, DVTI, and IKEv2 FlexVPN with the "IP[v6] Unnumbered" Command Configuration Example
18/Sep/2013
FlexVPN Migration: Hard Move from DMVPN to FlexVPN on a Different Hub
09/Jan/2015
Routing Information Protocol (RIP)
ASA/PIX with RIP Configuration Example
22/May/2008
How to Populate Dynamic Routes Using Reverse Route Injection
02/Feb/2006
Open Shortest Path First (OSPF)
Configuring OSPF Authentication on a Virtual Link
Initial Configurations for OSPF over a Point-to-Point Link
Initial Configurations for OSPF Over Broadcast Media
Initial Configurations for OSPF over Frame Relay Subinterfaces
MPLS Basic Traffic Engineering Using OSPF Configuration Example
Configuring a GRE Tunnel over IPsec with OSPF
OSPF Routers Connected by a Multi-Access Network
How OSPF Propagates External Routes into Multiple Areas
OSPF Routers Connected by a Numbered Point-to-Point Link
OSPF Inter-Area Routing
OSPF Routers Connected by an Unnumbered Serial Link
OSPF Not So Stubby Area Type 7 to Type 5 Link-State Advertisement Conversion
Identify how OSPF Injects a Default Route in a Normal Area
How OSPF Injects a Default Route into a Not So Stubby Area
OSPF Routers Connected by a Point-to-Multipoint Link
Adjust Administrative Distance for Route Selection in Cisco IOS Routers Configuration Example
OSPFv3 Virtual Link Configuration Example
Redistribute Connected Networks into OSPF with Subnet Keyword
Redistribute OSPFv3 Routes in BGP Configuration Example
ASA/PIX with OSPF Configuration Example
How to Populate Dynamic Routes Using Reverse Route Injection
ASA Release 9.2.1 OSPF Enhancements Configuration Example
OSPF Virtual Link
(ZIP - 54 KB)
OSPF as PE-CE Protocol and Loop-Prevention Techniques in MPLS L3 VPN Configuration Example
ASA/PIX with RIP Configuration Example
Configure OSPF Distance External Command Behaviour
Configure OSPF To Filter Type-5 LSAs
Configure OSPFv3 as PE-CE Protocol with Loop Prevention Techniques
Configure Redistribution of iBGP Routes Into OSPF
Exclusion of EIGRP, OSPF and BGP Messages from the Firepower Intrusion Inspection
Link LSA (LSA Type 8) and Intra-Area-Prefix (LSA Type 9)
Open Shortest Path First Prefix-Suppression
Configure Forward Address in OSPF Redistributed Default Route
Configure OSPF with Multi-Area Adjacency
Interior Gateway Routing Protocol (IGRP)
Adjust Administrative Distance for Route Selection in Cisco IOS Routers Configuration Example
Enhanced Interior Gateway Routing Protocol (EIGRP)
Configuring IPSec with EIGRP and IPX Using GRE Tunneling
EIGRP IPv6 Configuration Example
Failover with EIGRP Using VRF Configuration Example
Adjust Administrative Distance for Route Selection in Cisco IOS Routers Configuration Example
EIGRP Message Authentication Configuration Example
Redistribute IPv6 BGP Default Route in EIGRPv6 Configuration Example
Hard Move Migration from DMVPN to FlexVPN on a Different Hub
Configure Default-Route in EIGRP
Configure EIGRP Named Mode
Exclusion of EIGRP, OSPF and BGP Messages from the Firepower Intrusion Inspection
What Do EIGRP "Not On Common Subnet" Messages Mean?
Routing Information Protocol (RIP)
Sample Configuration for Authentication in RIPv2
Sample Configuration of Triggered Extensions to RIP
Adjust Administrative Distance for Route Selection in Cisco IOS Routers Configuration Example
How to Populate Dynamic Routes Using Reverse Route Injection
Border Gateway Protocol (BGP)
Configure the BGP Maximum-Prefix Feature
Configuring Single Router Mode Redundancy and BGP on a Cat6000 MSFC
Use HSRP to Provide Redundancy in a Multihomed BGP Network
Sample Configuration for Removing Private AS Numbers in BGP
MP-EBGP Configuration Example
IPv6 BGP Prefix-Based Outbound Route Filtering Configuration Example
IPv6 BGP Route Reflector Configuration Example
Compatible Systems Setup Guides: BGP Configuration Guide
Adjust Administrative Distance for Route Selection in Cisco IOS Routers Configuration Example
Configure and Verify the BGP Conditional Advertisement Feature
Configure the IPv6 BGP Local Preference Feature
Configure IPv6 Black-Holing through Interface Null0
BGP Implementation Using 32-bit AS Number Configuration Example
Redistribute IPv6 BGP Default Route in EIGRPv6 Configuration Example
Redistribute OSPFv3 Routes in BGP Configuration Example
ASA/PIX: BGP through ASA Configuration Example
Multiprotocol BGP for IPv6 Configuration Example
Hard Move Migration from DMVPN to FlexVPN on a Different Hub
Configure ASA Border Gateway Protocol
ASA/PIX: BGP through ASA Configuration Example
(ZIP - 119 KB)
Configure a Secure eBGP Session with an IPsec VTI
How to Block One or More Networks From a BGP Peer
(ZIP - 43 KB)
Sample Configuration for BGP with Two Different Service Providers (Multihoming)
(ZIP - 47 KB)
Configure and Verify VXLAN with MP-BGP EVPN Control Plane
Configure BGP to Advertise a Default Route on Nexus Switches
Configure IPV6 Remote Triggered Black Hole with IPv6 BGP
Exclusion of EIGRP, OSPF and BGP Messages from the Firepower Intrusion Inspection
Inter VRF Route Leaking with iBGP as PE to CE Routing Protocol
Understand BGP Dynamic Segment Routing Traffic Engineering
Configure BGP Confederations on Nexus 9000
Configure BGP IPv6 Flowspec
Configure BGP with Two Different Service Providers
Configure Nexus EVPN-VXLAN Multi-Site with Route Server
Multiprotocol BGP (MBGP)
MP-EBGP Configuration Example
IPv6 BGP Prefix-Based Outbound Route Filtering Configuration Example
Configure IPv6 Black-Holing through Interface Null0
Redistribute OSPFv3 Routes in BGP Configuration Example
Integrated Intermediate System-to-Intermediate System (IS-IS)
Configuring IS-IS for IP on Cisco Routers
Configuring IS-IS over IPv6
Configuring IS-IS Authentication
Adjust Administrative Distance for Route Selection in Cisco IOS Routers Configuration Example
IS-IS Network Types and Frame Relay Interfaces
(ZIP - 52 KB)
Configure IS-IS Adjacency and Area Types
Cisco Optimized Edge Routing (OER)
Configure PfRv3 for External Interface Discovery
Interior Gateway Protocol (IGP)
Configure OSPF Distance External Command Behaviour
IPv6 Traffic Filtering Using "prefix-list" Configuration Example
10/Sep/2018
Easy Virtual Network Configuration Example
04/Aug/2014
ATT-bit Filtering with CLNS Filter-Set Configuration Example
19/Aug/2014
Configure the AIGP Metric Attribute for BGP
18/May/2021
OSPF Routing Loop/Sub-Optimal Routing between Cisco IOS and NXOS for External Routes Configuration Example
02/Jul/2014
OSPF Type-5 Route Calculation Configuration Example
05/Mar/2015
Configuration Example of MPLS L3VPNs with ISIS Remote LFA
24/Oct/2016
Configure Attach Bit Set
07/Jun/2021
Configure Easy Virtual Network with EIGRP Named Mode
15/Sep/2016
Configure LISP Multihop Mobility on Nexus
07/Jun/2018
Configure Learn-List and PfR-Map in PfRv2
22/Apr/2016
Configure Loop-Free Alternate Path with OSPFv2
07/Jun/2018
Configure Multicast Over LISP Phase 1
09/Jan/2018
Configure PfRv2 Performance Monitoring Methods
01/Oct/2019
Configure PfRv2 Traffic Control Mechanism With Static Route And Policy Based Routing
25/Jan/2016
Configure PfRv2 Traffic Control Mechanism with BGP or EIGRP
25/Jan/2016
Configure PfRv2 to load-balance over multiple WAN links.
25/Jan/2016
Configure Redistribute Internal BGP Routes into IGP
24/Oct/2016
Configure Route Leak Between Global and VRF Routing Table without Next-Hop
09/Aug/2023
Configure and Troubleshoot LISP
27/Oct/2015
Ethernet MTU and TCP MSS Adjustment Concept for PPPoE Connections
12/Jan/2017
Configure ISP Failover with Default Routes Using IP SLA Tracking
16/Nov/2023
Implementing Nexus L2 EVPN over Segment Routing MPLS
Support Documentation
All Support Documentation for this protocol