ERouting Final Exam Answers

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The link to the ISP is not advertised by the routing protocol process. The router will be unable to ping 192.168.1.2. The hello and dead intervals are different on the two routers. Configure both routers with the same EIGRP pro ess I!. The packets will travel via R2-R1. It is the number of hops between R2 an" the 192.168.8.#$2% networ&It is used by the receiving routers to re uest !ore infor!ation about any entry in the "#". The router mo"ifies the TT' fiel"( "e rementing it b) one. The router maintains the same sour e an" "estination IP. The router hanges the sour e ph)si al a""ress to the ph)si al a""ress of the e*it interfa e. If the network uses the RIP protocol$ router % will deter!ine that all paths have e ual cost. Issue the no shut"own omman" on the interfa e The 1&2.1'(.).* network is not included in the RIP configuration of R2. R1 will forwar" the route information for subnet 192.168.1##.#$+#. R1 will forwar" the route information with an a"ministrati,e "istan e set to -#. fro! R1 to 1&2.1'(.+.1 The "efault route is onfigure" in orre tl). ,-R%. - stores the configuration file P/ST - runs diagnostics on hardware !odules It uses the .ellman/0or" algorithm to "etermine the best path. It perio"i all) sen"s omplete routing tables to all onne te" "e,i es. The 0a*11 interfaces of the two routers are configured for different subnets. The entr) for 192.168.2.#$2% is missing from the routing table of R1. The entr) for 192.168.2.#$2% is missing from the routing table of R2. It forwards data packets toward their destination. It acts as an intersection between !ultiple IP networks. It e* lu"es subnet information from the routing up"ates. Specify the network for which RIP routing has to be enabled. 192.168.1.6%$26 2onfigure the routers in the sa!e area. .atch the hello and dead ti!ers on both routers. I1/I1 21P0 2onfigure a static route on R1 using the IP address of S*1*1* on R2. The highest IP a""ress among the a ti,e interfa es will be use" Routers that run a link-state protocol can establish a co!plete topology of the network. The shortest path first algorith! is used. The onfiguration file is missing from 34R56. %#2" is a router that is connected to R1. The device is connected at the Serial*1*11 interface of R1. The routers must agree on the networ& t)pe. The routers must use the same "ea" inter,al. /ne of the default routes is configured incorrectly. I1/I1 21P0 The %" of 3I4RP routes has been !anually changed to a value other than the default value. Router1 is running both the 3I4RP and /SP0 routing process. ,o default route has been configured. It will forwar" the pa &et to R1. 2o!pared to RIP$ 3I4RP has a lower ad!inistrative distance. the highest IP a""ress of an) logi al interfa e the highest IP a""ress of an) ph)si al interfa e 2isco5(& EIGRP 1&2.1'(.*.*122 RIP,1 "oes not support "is ontiguous networ&s. The traffic will be load-balanced between %-#-" and %-2-". .7 onfig89 router rip .7 onfig/router89 passi,e/interfa e 1#$# It assigns a value that represents an infinite !etric to the poisoned route. It sends back the poisoned route update to the sa!e interface fro! where it was received. split hori:on 6 5ll routes are stable. The show ip eigrp topolog) omman" has been run on R1. the path learned via 3I4RP It ma) be ba &e" up b) a feasible su essor route. It is use" b) EIGRP to forwar" traffi to the "estination. It will forward the packet to the default gateway. Configure the R2 router interfa es for area #. " 152.1'.1.*12) 7&*121&6)6'8 via 1&2.1'(.2**.1$ **9**9*&$ Serial*1*1* Three networ& "e,i es are "ire tl) onne te" to Router2. The serial interfa e between Router2 an" Router+ is up. 0ailed routes are advertised with a !etric of infinity. 1#.#.#.#$22 is subnette"( 1 subnets ! 1#.-.#.#;9#$2#-9#1< ,ia 192.168.1.2( 1#$#$#

1*.*.*.*1( 1&2.1'(.2.*12) ip route #.#.#.# #.#.#.# 0a#$1 ip route #.#.#.# #.#.#.# 1#.1.1.2 Router) 5 metri is a ,alue use" b) a parti ular routing proto ol to ompare paths to remote networ&s. a "T3 device a -.+6 cable pa &et swit hing path sele tion ip route 152.1'.*.* 266.266.*.* S*1* ip route 152.1'.*.* 266.266.*.* 1&2.1'(.*.2 Paris7 onfig89 router eigrp 1## Paris7 onfig/router89 networ& 192.168.=.# Paris7 onfig/router89 networ& 192.168.8.# 152.1'.1'.*12* 711*8 via 1&2.1'(.*.15 Pa &ets route" to the R2 0ast Ethernet interfa e re>uire two routing table loo&ups. 1*.*.*.*1( 1&2.1'(.2.*12) split hori:on The !issing infor!ation for #lank 1 is the co!!and show ip route. The !issing infor!ation for #lank 2 is the nu!ber 12*. The !issing infor!ation for #lank + is the letter 2. 1 1=2.16.1.# ;1$#< ,ia 1=2.16.2.2 The %" of 3I4RP routes has been !anually changed to a value other than the default value. Router1 is running both the 3I4RP and /SP0 routing process. ,o default route has been configured. The subnetwor& onfigure" on the serial lin& between Router1 an" Router2 o,erlaps with the subnetwor& assigne" to Ethernet# of Router+. li!its the period of ti!e or nu!ber of hops a packet can traverse through the network before it should be discarded .( ! The packet will be dropped. Router- will sen" Router% a triggere" up"ate with a metri of 16 for networ& 1#.#.#.#. The route was ignored if the Rich!ond router did not include the 152.2&.1&(.*12) network in its routing updates. The serial interfa e between the two routers is "own. The show ip eigrp topolog) omman" has been run on R1. RIPv2 traffic will use the path Router1$ Router2$ Router6 because it has the least hops. Router2 is missing a route to the 1=2.16.#.# networ& Router+ is missing a route to the 1#.#.#.# networ& The router encapsulates the packet in the appropriate data link fra!e type for the outgoing data link. The router deter!ines the e:it interface after data encapsulation. The router installs all the e>ual ost paths in the routing table an" performs e>ual ost loa" balan ing to sen" pa &ets out multiple e*it interfa es. The router first selects routes with the lowest ad!inistrative distance. The resulting routes are then prioriti;ed by !etric and the routes with the best !etric are added to the routing table. 34R56 / stores the onfiguration file P21T / runs "iagnosti s on har"ware mo"ules /nly the enable password is encrypted. Change the IP a""ress on 1erial #$1$# on router 2 to 192.168.#.1$+#. 3I4RP supports une ual cost load balancing. /SP0 elects designated routers on !ultiaccess links. RIP does not advertise a route beyond a hop count of 16. sen" hello to "is o,er neighbors an" form a"?a en ies The routers !ust agree on the network type. The routers !ust use the sa!e dead interval. The route ,ia Path 5 is installe" be ause the stati route has the lowest a"ministrati,e "istan e to networ& 1#.2.#.#$16. 1&2.1'(.1*.+1 is the broadcast address for this subnet. 1#.#.#.# 1#.1.2.# route to 1*.1.*.*12+ It is the metri ( whi h is ost. Routes to networks 1&2.1'(.1.*12)$ 1&2.1'(.2.*12)$ and 1&2.1'(.+.*12) will be in the routing table. 1 192.168.168.#$2% ;1$#< ,ia 192.168.2##.1 It uses triggered updates to announce network changes if they happen in between the periodic updates. The router mo"ifies the TT' fiel"( "e rementing it b) one. The router maintains the same sour e an" "estination IP. The router hanges the sour e ph)si al a""ress to the ph)si al a""ress of the e*it interfa e. #<config=> router rip #<config-router=> passive-interface S*1* 'o ate an" loa" the startup/ onfig file from 34R56. 3nable the R1 and R2 serial interfaces. 21P0 inter,al timers mismat h interfa e networ& t)pe mismat h 152.1'.*.*11+ R17 onfig/router89 networ& 1=2.16.#.# #.#.+1.2-- area # It will load balance the traffic between %"2 and %#2

use" to announ e new 21P0 information an" to repl) to ertain t)pes of re>uests Routers co!pare !etrics to deter!ine the best route. @se show an" "ebug omman"s to "etermine if hellos are propagating. It assigns a value that represents an infinite !etric to the poisoned route. It sends back the poisoned route update to the sa!e interface fro! where it was received 5s new neighbors are "is o,ere"( entries are pla e" in a neighbor table. If hello pa &ets are not re ei,e" within the hol" time( !@5' must re al ulate the topolog). They are aware of the co!plete network topology. They offer rapid convergence ti!es in large networks. tests 'a)er 2 onne ti,it) enable" b) "efault on ea h interfa e pro,i"es information on "ire tl) onne te" "e,i es that ha,e C!P enable" The ?%@ router needs the network 1&2.1'(.+.* *.*.*.266 area * co!!and. networ& a""ress wil" ar" mas& area I! 1&(.1(.)(.*121 RouterA57 onfig/router89 ip ospf up"ate/"efault .ontgo!ery has Aayer 2 connectivity with 2u!berland. #rant$ 0isher!an$ and Poto!ac are directly connected to .ontgo!ery. !@5' will >uer) neighbors for a route to networ& 192.168.1.#. "23 2SB1"SB !ode! 2 - neighbors 1&2.1'(.1*.& and 1&2.1'(.1*.6 have auto su!!ary disabled- router + is load balancing traffic to the 152.1'.+.* network across its serial interfaces / The pa &et will be "roppe". - The subnetwork configured on the serial link between Router1 and Router2 overlaps with the subnetwork assigned to 3thernet* of Router+. / 192.168.1#.+1 is the broa" ast a""ress for this subnet - S 1&2.1'(.1'(.*12) 711*8 via 1&2.1'(.2**.1 / pre,ent up"ate messages from reinstating a route that ma) ha,e gone ba" / allow routers to still forwar" pa &ets to "estination networ&s that are in hol""own / permit lower metri up"ates re ei,e" from an) neighboring router to reinstate the route to a possibl) "own networ& - "B%A will uery neighbors for a route to network 1&2.1'(.1.*. / The router first sele ts routes with the lowest a"ministrati,e "istan e. The resulting routes are then prioriti:e" b) metri an" the routes with the best metri are a""e" to the routing table. - Aocate and load the startup-config file fro! ,-R%.. / The router mo"ifies the TT' fiel"( "e rementing it b) one. / The router maintains the same sour e an" "estination IP. / The router hanges the sour e ph)si al a""ress to the ph)si al a""ress of the e*it interfa e. - network address - wildcard !ask - area I" /It uses triggere" up"ates to announ e networ& hanges if the) happen in between the perio"i up"ates. - 3I4RP traffic will use the path Router1$ Router+$ Router)$ Router6 because it has the best !etric. / RouterA57 onfig/router89 "efault/information originate -S 152.1'.1.* 711*8 via 152.1'.2.2 / 1=2.16.16.#$2# ;1$#< ,ia 192.168.#.1= - /nly the enable password is encrypted. / The) are aware of the omplete networ& topolog). / The) offer rapi" on,ergen e times in large networ&s. - /SP0 elects designated routers on !ultiaccess links. - 3I4RP supports une ual cost load balancing. - RIP does not advertise a route beyond a hop count of 16. /Router2 is missing a route to the 1=2.16.#.# networ& / Router+ is missing a route to the 1#.#.#.# networ& - tests Aayer 2 connectivity - enabled by default on each interface - provides infor!ation on directly connected devices that have 2"P enabled / Change the IP a""ress on 1erial #$1$# on router 2 to 192.168.#.1$+# - .ontgo!ery has Aayer 2 connectivity with 2u!berland. - #rant$ 0isher!an$ and Poto!ac are directly connected to .ontgo!ery / R17 onfig/router89 networ& 1=2.16.#.# #.#.+1.2-- area # - The routers !ust agree on the network type. - The routers !ust use the sa!e dead interval. / @se show an" "ebug omman"s to "etermine if hellos are propagating. - 1*.*.*.*1( -1&2.1'(.2.*12) / Routes to networ&s 192.168.1.#$2%( 192.168.2.#$2%( an" 192.168.+.#$2% will be in the routing table. - Router6 will send Router) a triggered update with a !etric of 1' for network 1*.*.*.* / The route ,ia Path 5 is installe" be ause the stati route has the lowest a"ministrati,e "istan e to networ& 1#.2.#.#$16. - The co!!and network 1&2.1'(.2.* is !issing fro! the 3I4RP configuration on the ?%@ router. Pa &ets route" to the R2 ethernet interfa e re>uire two routing table loo&ups.

- /SP0 interval ti!ers !is!atch - interface network type !is!atch - inconsistent authentication configuration / 1=2.16.#.#$1+ - #<config=> router rip - #<config-router=> passive-interface S*1* - % <config=> no router rip / The router installs all the e>ual ost paths in the routing table an" performs e>ual ost loa" balan ing to sen" pa &ets out multiple e*it interfa es. - The ip classless co!!and is not enabled on the Suffolk router. / split hori:on - li!its the period of ti!e or nu!ber of hops a packet can traverse through the network before it should be discarded / The 5! of EIGRP routes has been manuall) hange" to a ,alue other than the "efault ,alue. / Router1 is running both the EIGRP an" 21P0 routing pro ess. / 3o "efault route has been onfigure". - %s new neighbors are discovered$ entries are placed in a neighbor table. - If hello packets are not received within the hold ti!e$ "B%A !ust recalculate the topology. - The reported distance is the distance to a destination as advertised by a neighbor. / 198.18.%8.#$21 -"23 -2SB1"SB -!ode! /2 - Paris<config=> router eigrp 1** - Paris<config-router=> network 1&2.1'(.5.* - Paris<config-router=> network 1&2.1'(.(.* / pa &et swit hing / path sele tion - R1<config=> ip route 1*.1.1.* 266.266.266.* 1&2.1'(.*.2 - R2<config=> ip route 1*.1.2.* 266.266.266.* 1&2.1'(.*.1 / Enable the R1 an" R2 serial interfa es. - It will load balance the traffic between %"2 and %#2 / 34R56 / stores the onfiguration file / P21T / runs "iagnosti s on har"ware mo"ules - ip route 152.1'.*.* 266.266.*.* S*1* - ip route 152.1'.*.* 266.266.*.* 1&2.1'(.*.2 / .( ! - *.*.*.*1* via 1&2.1'(.*.1 / Routers ompare metri s to "etermine the best route. - learn about directly connected networks / use" to announ e new 21P0 information an" to repl) to ertain t)pes of re>uests - The ?%@ router needs the network 1&2.1'(.+.* *.*.*.266 area * co!!and. / It is the metri ( whi h is ost. - The !issing infor!ation for #lank 1 is the co!!and show ip route. - The !issing infor!ation for #lank 2 is the nu!ber 12*. - The !issing infor!ation for #lank + is the letter 2.

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