2.7.3 Packet Tracer - Multiarea OSPF Exploration - Physical Mode (Part 3)

cashware recording company based in sao paulo brazil provides servicer mini recording studios around the city so that anyone can rent a time slot and record their songs by themselves the it department in casual recording company crc decided to migrate to a multi-area ospf network you will evaluate the impact and benefits derive it from the change to determine if it was a good decision or not crc has continued to grow and will open a new branch office in montevideo uruguay we will configure the area border router for the new area and physically connect the branch office network to the corporate headquarters network through the internet configure a new area and attach to area 0 through the internet crc is still expanding and has decided to open another office in montevideo uruguay the internet link between sao paulo and montevideo is a submarine cable complete the physical cabling to connect area 0 to 802 okay this is area 1 area 0 and area 51 area one on 81 on sao paulo areas here on sao paulo in area 51 on sao paulo and the new area area 2 in montevideo you should now see an icon for montevideo connections okay click on connections here connections fiber cable okay fiber cable the orange cable down here click in sao paulo and select corporate headquarters hq wiring process rack a1 abr1 and gigabit headernet to zero click on sao paulo click here sao paulo select corporate headquarters wiring closet rack a1 abr1 a1 abr 1 the alia border router and connect on gigabit to zero okay and next click to internet one internet one wiring closet rack one r1 and gigabit ethernet one zero click on internet one internet one wiring closet rack one r1 and this is a router and gigabit one zero gw one zero select another fiber cable internet one internet one wiring closet rack one r2 gigabit one zero internet one wiring closet rack one r2 gigabit one zero and click on one the video montevideo branch office on the video branch office wiring closet rack a2 abr1 a2 abr one area border router and uv0 configure ospf on router a2 avr1 a2abr1 is already configured with the exception of ospf you will configure the router to be an area border router connecting area 2 to the rest of the network click on the video okay click on the video on the cd notice there is a branch of his building okay branch office building with the fiber link you just created and this orange line is the fiber link click branch office rack branch office wiring closet click on the building on the rack okay click a2 abr abr1 a2abr1 click command line interface enable ospf okay set the router id to 172 17 110 okay these commands enter enable configure terminal router or spf 1 or spf 1 the router id use 172 17110 it's not an address it's only a identifier and configure the 192.168.320 network to be in area 2 and the 172 1718 network to be in area zero okay now on the logical topology 19216a 3d2 on area 2 and 172 17 1 8 on area 0. okay so notify both or advertise bot networks you can verify you can verify the directly connected networks you do show iproot connected and now you can see a bot directly connect that networks and advertise this network 192.168 theory to zero the white car for thirty is three and this should be an area two area 2 okay enter and then another network 172 17 1 8 the white car for 30 is three this one radius here once i did 72 17 172 17 1 8 30 172 17 1 8 and the wild card 430 and 8a0 this it is in area zero okay enter now this is the network adjacency with a2 r1 okay this this this log message is for the network adjacency with ia2r1 h2r1 and this another network adjacency is for the adjacency with the another router a1abr1 the connection to to the corporate headquarters okay two nighthorse configure summarization on router a2 abr1 so that it will advertise the summary network 32 192.168.320 19 into 80 0. okay this should be area 2 okay area 2. configurationalization on router a2 abr1 so that it will advertise the summary network 18168 theory to 0 19 into area 2 area 2. because you will summarize 18168 32 0 and 182 168 35 0. the prefix is 30 and another prefix 24 so the new prefix for the summarization will be 19 and and the network will be 18168320 so advertise this this summary okay router configuration mode area2 range 180 168 theory 2 0 55 285 to 24 0 okay okay this is 19 and there very nice and exit view the area to summarize roots in area one and in area 51 navigate to sao paulo hq wiring closet okay but liberal bug level back level click on sao paulo incorporate corporate hq wiring closet and a1 avr1 a1 abr1 command line interface okay is this this router up here avr a1 avr1 the area border router show ap root enter enable show show iproot okay and enter area route to 180 168 theory to 0 19 should appear in the routing table just like this okay ospf enter area 180 168 32 0 90. okay instead to show when i do 168 theory to zero and 182 and 68 theory five zero because you summarized both networks you will see on a1 avr1 only one network only one root sao paulo branch office back level back level click on branch office on sao paulo on the building wiring closet and a2 abr one okay and should be a 51 abr one okay not a2 avr1 branch office all routers starts with a51 a51 so it should be a51 abr1 the area border router here click here enter enable show ib root okay ospf interradio 1916a theory to zero 19. very nice now test connectivity from area 51 and area one to area number two click to a51 pc one okay go through this pc on branch office a 51 pc one this pc a 51 pc one desktop command prompt and ping the ip address of the pc on area 2 or montevideo ping 182 168 35 10. okay success and go to sao paulo a1 pc1 and from on corporate hq a1 one ping the new pc on montevideo okay back level quick level corporate hq wiring closet go to the pc a1 pc one desktop command prompt ping 35 tag the pc on montevideo 182 168 35 time okay okay you can make a tracer a tracer the verification tracer to give the point of failure okay and this hub one is a1 r1 when i2 168 0 4 is the interface on a1 r4 and 192.168 zero tank zero tank is the ip address on the interface of a1 avr1 so the review a1 avr1 okay ctrl c to stop this a1 avr1 click here show iproot okay very good okay and review a2 abr1 but level back level mach level click on one the video branch office wiring closet a2 abr1 a2a avr1 and show ib root ok and [Music] 182.168.000 okay go to a2 enter enable a2 abr1 show running copy okay and remove the area to range okay this configure terminal you need to access here to rather spf 1 rather spf 1. okay i'll remove this use the no keyword and copy this copy then paste okay now the line to remove this line enter okay and show running config okay no summarization very nice and go to router a1 abr 1 or a1 r1 show ap roots okay and copy running coffee to store coffee reloads a1r1 pay 101 copy running coffee to sell coffee remote reloads a2 abr1 a2 okay reload this show copy running config to startup config enter enter reload okay the neighbor adjacency okay two night wars very good enter they will show ap route networks theory 3 34 75 review a1 avr1 maybe r1 show ap root now you can see series 3 series 4 35 go to a1 r1 a1 r1 show ap previously failed and pinch the pc or warm the video repeat success okay success success very nice um again on a51 pc one hey 51 pc one ping the pc and montevideo success okay so you need to review this summarization you can do a better summarization to fix the problem what are the benefits derived from using multi-area ospf in a large multi-location company multi-area ospf is more efficient and scalable it allows areas to advertise summarized networks to other areas summarization results in smaller routing tables fewer spf algorithm executions and glass floating of lsa's link estate advertisements on the entire network completion 80 percent okay you go to a2 abr1 a2 abr1 configure copy configure terminal insert the summarization that i just remove it access router spf 1 and add this a2 abr 1 a2 abr 1 router or spf 1 sorry ospf 1 ada2 range made to 168 32 0 35 to 24 0 okay now you got 100 but you know you will lose connectivity okay so i recommend to remove this line so i just remove it this line to permit the connectivity between pieces okay thank you very much you

Channel: Christian Augusto Romero Goyzueta

Views: 617

Keywords: ensa, enterprise networking, security, automation, ccna, version 7, ccna 7, physical mode, packet tracer, ospf, ospfv2, neighbor, single area, multi area, summary, range, multiarea

Id: QHGOpp_SQ98

Length: 25min 6sec (1506 seconds)

Published: Thu Nov 04 2021