© 2008 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialBSCI 1 Route Optimization BSCI Module 5 – Lesson 1 Operating a Network Using Multiple Routing Protocols © 2008 Cisco Systems, Inc. All rights reserved.BSCI 2 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Objectives  Using Multiple Routing Protocols  Defining Route Redistribution  Redistributing Route Information  Using Seed Metrics  Seed Metrics Example  Defining Administrative Distance  Modifying Administrative Distances © 2008 Cisco Systems, Inc. All rights reserved.BSCI 3 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Objectives  Explain the purpose and use of seed metrics in route redistribution.  Describe how to redistribute routes into RIP, OSPF, EIGRP, and IS-IS.  Explain how to verify route redistribution.  Explain how to control routing updates using the passive-interface default command and route maps.  Describe new DHCP commands. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 4 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Purpose of this Lesson  Coverage of topics new to the “Route Optimization” module of BSCI.  What’s new in this module? –Detailed explanation of seed metrics –Redistribute routes into RIP, OSPF, EIGRP, and IS-IS –Verify route redistribution –Controlling routing updates with the passive-interface default command and route maps –Using the distance command to avoid suboptimal routing –More DHCP commands © 2006 Cisco Systems, Inc. All rights reserved. Cisco PublicBSCI Module 3 5 Seed Metrics and Route Redistribution © 2008 Cisco Systems, Inc. All rights reserved.BSCI 6 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Using Multiple IP Routing Protocols •Company mergers, multiple departments managed by multiple network administrators, multivendor environments © 2008 Cisco Systems, Inc. All rights reserved.BSCI 7 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Using Multiple Routing Protocols  Here we see a list of the most common reasons to use multiple routing protocols: 1. As an interim solution as you are migrating from an older Interior Gateway Protocol (IGP) to a new IGP 2. You may have to use an older routing protocol in some host systems: for example, UNIX host-based routers running RIP. 3. Different departments might not want to upgrade their routers to support a new routing protocol. 4. In a mixed-vendor environment, you can use a routing protocol specific to Cisco such as EIGRP in the Cisco portion of the network and a common standards-based routing protocol, like OSPF, to communicate with devices from other vendors. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 8 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Redistributing Route Information  Factors that have the most impact on redistribution include: –Metrics –Administrative distance –Classful/classless capabilities of the protocols  These factors will be discussed in various sections of this module. © 2008 Cisco Systems, Inc. All rights reserved.BSCI 9 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Redistribution with Seed Metric © 2008 Cisco Systems, Inc. All rights reserved.BSCI 10 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Default Seed Metrics Protocol Default Seed Metrics RIP Infinity IGRP/EIGRP Infinity OSPF 20 for all except BGP, which is 1 IS-IS 0 BGP BGP metric is set to IGP metric value [...]... 128.103. 35. 16 255 . 255 . 255 .248 E1/0 ip route 128.103. 35. 24 255 . 255 . 255 .248 E1/0 ip route 128.103. 35. 64 255 . 255 . 255 .248 128.103. 35. 34 ip route 128.103. 35. 64 255 . 255 . 255 .248 128.103. 35. 18 ip route 128.103. 35. 72 255 . 255 . 255 .248 128.103. 35. 34 ip route 128.103. 35. 72 255 . 255 . 255 .248 128.103. 35. 18 router rip redistribute static default metric 1 BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa... 128.103. 35. 0 255 . 255 . 255 .0 null0 router rip redistribute static default metric 1 BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 21 CCNP – BSCI Bachkhoa Networking Academy Redistributing from Classless to Classful Protocols  RIP Has a Longer Mask Than OSPF ip route 128.103. 35. 32 255 . 255 . 255 .248 E0/0 ip route 128.103. 35. 40 255 . 255 . 255 .248 E0/0 ip route 128.103. 35. 16... interfaces in EIGRP –Summarize in OSPF at an ABR and an ASBR BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 30 CCNP – BSCI Bachkhoa Networking Academy Activity  Lab 5- 3 Redistribution Between EIGRP and IS-IS  Learning Objectives –Review basic configuration of EIGRP and IS-IS –Redistribute into EIGRP –Redistribute into IS-IS –Use a standard access list to select...CCNP – BSCI Bachkhoa Networking Academy AD BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 11 CCNP – BSCI Bachkhoa Networking Academy Prefix length  192.168.32.1  192.168.32.100 BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 12 CCNP – BSCI Bachkhoa Networking Academy Modifying Administrative Distances Source... type-value] [route-map map-tag] [subnets] [tag tag-value]  Default metric is 20  Default metric type is 2  Subnets do not redistribute by default BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 24 CCNP – BSCI Bachkhoa Networking Academy Example: Redistribution into OSPF RtrA(config)# router ospf 1 RtrA(config-router)# redistribute eigrp ? Autonomous... BSCI Bachkhoa Networking Academy Redistributing into EIGRP  Bandwidth in kilobytes = 10000  Delay in tens of microseconds = 100  Reliability = 255 (maximum)  Load = 1 (minimum)  MTU = 1 ,50 0 bytes BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 28 CCNP – BSCI Bachkhoa Networking Academy Activity Lab 5- 1 Redistribution Between RIP and OSPF  Learning Objectives... route-map maptag (Optional) Identifier of a configured route map to be interrogated to filter the importation of routes from this source routing protocol to the current routing protocol BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 20 CCNP – BSCI Bachkhoa Networking Academy Redistributing from Classless to Classful Protocols  OSPF Has a Longer Mask Than RIP... BSCI Bachkhoa Networking Academy 2 way , 1 way redistribution BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 17 CCNP – BSCI Bachkhoa Networking Academy Planning Redistribution  Locate the boundary router between two routing processes  Determine which routing process is the core or backbone process  Determine which routing process is the edge or migration... mạng Bách Khoa - www.bkacad.com 34 CCNP – BSCI Bachkhoa Networking Academy Example: Before Redistribution (Cont.) BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 35 CCNP – BSCI Bachkhoa Networking Academy Example: Configuring Redistribution at Router B BSCI © 2008 Cisco Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 36 ... Systems, Inc All rights reserved Học viện mạng Bách Khoa - www.bkacad.com 29 CCNP – BSCI Bachkhoa Networking Academy Activity Lab 5- 2 Redistribution Between EIGRP and OSPF  Learning Objectives –Review EIGRP and OSPF configuration –Redistribute into EIGRP –Redistribute into OSPF –Summarize routes in EIGRP –Filter routes using route maps –Modify EIGRP distances –Modify OSPF distances –Passive interfaces in . Inc. All rights reserved.BSCI 6 CCNP – BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com Using Multiple IP Routing Protocols •Company mergers, multiple departments managed. www.bkacad.com Using Multiple Routing Protocols  Here we see a list of the most common reasons to use multiple routing protocols: 1. As an interim solution as you are migrating from an older. BSCI Bachkhoa Networking Academy Học viện mạng Bách Khoa - www.bkacad.com 2 way , 1 way redistribution © 2008 Cisco Systems, Inc. All rights reserved.BSCI 18 CCNP – BSCI Bachkhoa Networking Academy Học