⼎՟Ёⱘ Router AǃRouter B Router C ⱘҹ㔥ষ˄ߚ߿䖲ⱘ㔥㒰ᰃ 10.13.50.0ǃ 10.155.120.0 10.20.40.0˅䛑咬䅸ਃ⫼∈ᑇߚࡆࡳ㛑ˈ㗠 Router C Ϟ䖲ࠄ 172.16.1.0 192.168.1.0ϸϾᄤ㔥ⱘІ㸠ষ S0 ⫼ no ip split-horizon ੑҸ⽕ℶњ∈ᑇߚࡆࡳ㛑ˈ䖭ḋ䖭Ͼ
ষϞህৃҹѢᄤ㔥䏃⬅ᮄњDŽ
ᴀ⼎՟Ёˈ∈ᑇߚࡆࡳ㛑᠔᳝І㸠ষϞᰃ⽕ℶⱘˈ㗠Ϩ Router C Ϟᖙ乏⽕ℶ∈ᑇߚࡆ
ࡳ㛑ˈҹ֓ 172.16.0.0 㔥㒰ৃҹ 192.16.0.0 㔥㒰䖯㸠䗮ਞˈডПѺ✊DŽ䖭ϸϾᄤ㔥ᰃ䏃⬅఼ⱘ s0 ষѸ䗁ⱘDŽབᵰ䏃⬅఼ C ⱘ S0 ষϞਃ⫼њ∈ᑇߚࡆࡳ㛑ˈ߭ᅗϡ㛑 172.16.0.0 192.16.0.0䖭ϸϾᏻЁ㒻㔥㒰䗮ਞ䏃⬅DŽ
䏃⬅఼ A Ϟⱘ䜡㕂˖
RouterA>enable
RouterA# configure terminal RouterA(config)#interface ethernet 1 RouterA(config-if)#ip address 10.13.50.1 RouterA(config-if)#exit
RouterA(config)#interface serial 1 RouterA(config-if)#ip address 172.16.2.2
RouterA(config-if)#encapsulation frame-relay !--- s1 ІষϞᇕ㺙ᏻЁ㒻ण䆂 RouterA(config-if)#no ip split-horizon !--- s1 ІষϞ⽕ℶ∈ᑇߚࡆࡳ㛑
䏃⬅఼ B Ϟⱘ䜡㕂˖
RouterB>enable
RouterB# configure terminal RouterB(config)#interface ethernet 2 RouterB(config-if)#ip address 10.155.120.1 RouterB(config-if)#exit
RouterB(config)#interface serial 2
๏ฉፌћќڦCiscoୟᆯഗದዃᇑ࠶֩
RouterB(config-if)#ip address 192.168.1.2 RouterB(config-if)#encapsulation frame-relay RouterB(config-if)#no ip split-horizon
䏃⬅఼ C Ϟⱘ䜡㕂˖
RouterC>enable
RouterC# configure terminal RouterC(config)#interface ethernet 0 RouterC(config-if)#ip address 10.20.40.1 RouterC(config-if)#exit
RouterC(config)#interface serial 0 RouterC(config-if)#ip address 172.16.1.1
RouterC(config-if)#ip address 192.168.1.1 secondary RouterC(config-if)#encapsulation frame-relay RouterC(config-if)#no ip split-horizon
ඹШēϢߙ࿐؟έ੯ఊᅱൟē҂ׄ௲ఊદԅဈ༓ௐΡ༖ྑ؟έ੯ఊಁᄢēྻάჾ௲ԙඹفা
ဎdޚᅞēఢڴၽྡྷّґࠄࣇďݧრॕࠄӾྡྷّͧ߬ܰฉ৮౨ࠄࣇĐ౨ࠬᄘඹॴഃ଼דىٟટē દΡ༖ၽฉ৮ᄯൎပাဎ୶ԅఉۥտόᆦᄯࠬᄘഃ଼דىٟટd
8.3.3 RIP 䏃⬅ᮄ䅸䆕䜡㕂⼎՟
ᴀ㡖ᇚ䗮䖛ϔϾԧⱘ⼎՟ҟ㒡 Cisco 䏃⬅఼Ϟⱘ RIP 䏃⬅ᮄ䅸䆕ⱘԧ䜡㕂ᑨ⫼ᮍ⊩ˈ Ԛ㽕⊼ᛣⱘᰃҙ䜡㕂ᬃᣕ RIPv2 ⱘ Cisco 䏃⬅఼ᠡৃҹ䜡㕂 RIP 䏃⬅ᮄ䅸䆕DŽ
Cisco RIPv2䏃⬅఼ᬃᣕϸ⾡ RIP 䏃⬅ᮄ䅸䆕˖㒃᭛ᴀ䅸䆕 MD5 䅸䆕DŽ㒃᭛䅸䆕ᰃ咬䅸ⱘ 䅸䆕ᮍᓣˈԚᄬᅝܼ䱤ᙷᯊᓎ䆂ϡ㽕䞛⫼㒃᭛ᴀ䅸䆕ˈЎ㒃᭛ᴀ䅸䆕ᮍᓣЁⱘᆚ䩹ᇚ↣Ͼ থ䗕ⱘ RIPv2 䏃⬅ᮄࣙЁҹᯢ᭛ᰒ⼎ˈᕜᆍᯧ㹿পDŽ
ᴀ⼎՟ᢧᠥ㒧ᵘབ 8-18 ᠔⼎DŽᕜㅔऩˈህᰃϸϾᬃᣕ RIPv2 ⱘ䏃⬅఼˄RA RB˅ⳌⳌ 䖲ˈ⦄㽕䖭ϸϾ RIP 䏃⬅఼П䯈䜡㕂 RIP 䅸䆕DŽ
8-18 RIP 䅸䆕⼎՟ᢧᠥ㒧ᵘ
RIP䅸䆕ⱘᴀ䜡㕂⌕བϟ˖ᅮНϔϾ RIP 䅸䆕ᆚ䩹䫒˗
ЎϞ䴶ᅮНⱘᆚ䩹䫒䜡㕂ϔϾϾᆚ䩹˄݊ᅲህᰃᆚ䩹 ID˅˗
ЎҹϞ↣Ͼᆚ䩹 ID 䜡㕂ԧⱘᆚ䩹ᄫヺІˈᅗӀᰃ᳔㒜⫼Ѣ䅸䆕ⱘᆚ䩹˗
ЎϾ䳔㽕 RIP 䅸䆕ⱘ䏃⬅఼ষϞਃ⫼ RIP 䅸䆕ˈᑊᣛᅮ㽕Փ⫼ⱘ䅸䆕ᆚ䩹䫒˗
ᣛᅮϾষ᠔䞛⫼ⱘ RIP 䅸䆕ᓣˈᰃ㒃᭛ᴀ䅸䆕ˈ䖬ᰃ MD5 䅸䆕DŽЎਃ⫼њ RIP䅸䆕ৢ咬䅸ᰃ䞛⫼㒃᭛ᴀ䅸䆕ˈ᠔ҹབᵰ㽕䞛⫼㒃᭛ᴀ䅸䆕ˈ߭ᴀℹৃҹϡ⫼䜡㕂DŽ
˄ৃ䗝˅䜡㕂ᆚ䩹ㅵ⧚DŽᆚ䩹ㅵ⧚ᰃϔ⾡ࠊ䅸䆕ᆚ䩹ⱘᮍ⊩ˈ⫼ѢҢϔϾ䅸䆕ᆚ䩹䖕⿏
ࠄϔϾ䅸䆕ᆚ䩹DŽ
ϟ䴶ߚ߿ҟ㒡㒃᭛ᴀ RIP 䅸䆕 MD5 RIP 䅸䆕ⱘԧ䜡㕂ᮍ⊩DŽ
๏ฉፌћќڦCiscoୟᆯഗದዃᇑ࠶֩
1ˊ㒃᭛ᴀ RIP 䅸䆕䜡㕂
RA 䏃⬅఼Ϟⱘ䜡㕂˄ᴀッ᠔䜡㕂ⱘᆚ䩹 ID ᆚ䩹ᄫヺІᖙ乏㽕Ϣᇍッ䏃⬅఼Ϟ᠔䜡㕂ⱘᆚ 䩹 ID ᆚ䩹ᄫヺІᇍᑨϔ㟈ˈԚᆚ䩹䫒ৡ⿄ৃҹϡϔ㟈˅˖
RA>enable
RA# configure terminal
RA(config)#key chain kal !---ᅮН RA Ϟⱘᆚ䩹䫒ৡ⿄ kalˈϔϾᆚ䩹䫒ৃҹࣙᣀϾᆚ䩹ˈৃҹϢᇍ RB ッ䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹 䫒ৡ⿄ϡϔḋ
RA (config-keychain)#key 1 !---ᅮН kal ᆚ䩹䫒Ёⱘ 1 োᆚ䩹ˈৃҹϢᇍッ RB 䏃఼⬅Ϟ䜡㕂ⱘᆚ䩹োϡϔ㟈˄䖭ϔ⚍Ϣৢ䴶ᇚ㽕ҟ 㒡ⱘ MD5 䅸䆕㽕∖ᰃϡৠⱘ˅
RA (config-keychain-key)#key-string 234 !---ᅮН 1 োᆚ䩹ⱘᆚ䩹ᄫヺІЎ 234ˈᖙ乏Ϣᇍッ RB 䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹ᄫヺІϔ㟈 RA (config-keychain-key)#exit
RA (config-keychain)#exit
RA (config)#interface Loopback0
RA (config-if)#ip address 70.70.70.70 255.255.255.255 !---Ў loopback0 ⦃䏃ষᣛᅮ IP ഄഔˈ↣Ͼ䏃⬅఼䗮ᐌᖙ乏䜡㕂ϔϾ⦃䏃
ষ IP ഄഔˈҹℸЎᴀ䏃⬅఼ IDˈԚᅗϡᰃ RIP 䅸䆕᠔ᖙ乏䜡㕂ⱘ RA (config-if)#exit
RA (config)#interface Serial0
RA (config-if)#ip address 141.108.0.10 255.255.255.252
RA (config-if)#ip rip authentication key-chain kal !--- Serial0 ষϞਃ⫼ RIP 䅸䆕ˈᑊᣛᅮՓ⫼ࠡ䴶Ꮖ߯ᓎৡЎ kal ⱘᆚ䩹䫒 RA (config-if)#exit
RA (config)#router rip RA (config-router)#version 2
RA (config-router)#network 141.108.0.0 RA (config-router)#network 70.0.0.0
RB 䏃⬅఼Ϟⱘ䜡㕂˄ᴀッ᠔䜡㕂ⱘᆚ䩹 ID ᆚ䩹ᄫヺІᖙ乏㽕Ϣᇍッ䏃⬅఼Ϟ᠔䜡㕂ⱘᆚ 䩹 ID ᆚ䩹ᄫヺІᇍᑨϔ㟈ˈԚᆚ䩹䫒ৡ⿄ৃҹϡϔ㟈˅˖
RB>enable
RB# configure terminal
RB(config)#key chain kal !---ᅮН RB Ϟⱘᆚ䩹䫒ৡ⿄ kalˈϔϾᆚ䩹䫒ৃҹࣙᣀϾᆚ䩹ˈৃҹϢᇍ RA ッ䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹䫒 ৡ⿄ϡϔḋ
RB (config-keychain)#key 1 !---ᅮН kal ᆚ䩹䫒Ёⱘ 1 োᆚ䩹ˈৃҹϢᇍッ RA 䏃఼⬅Ϟ䜡㕂ⱘᆚ䩹োϡϔ㟈䖭ϔ⚍Ϣৢ䴶ᇚ㽕ҟ㒡 ⱘ MD5 䅸䆕㽕∖ᰃϡৠⱘ
RB (config-keychain-key)#key-string 234 !---ᅮН 1 োᆚ䩹ⱘᆚ䩹ᄫヺІЎ 234ˈᖙ乏Ϣᇍッ RA 䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹ᄫヺІϔ㟈 RB (config-keychain-key)#exit
RB (config-keychain)#exit RB (config)#interface Loopback0
RB (config-if)#ip address 80.80.80.1 255.255.255.0 !---Ў loopback0 ⦃䏃ষᣛᅮ IP ഄഔˈ↣Ͼ䏃⬅఼䗮ᐌᖙ乏䜡㕂ϔϾ⦃䏃ষ
IPഄഔˈҹℸЎᴀ䏃⬅఼ IDˈԚᅗϡᰃ RIP 䅸䆕᠔ᖙ乏䜡㕂ⱘ
RB (config-if)#exit
RB (config)#interface Serial0
RB (config-if)#ip address 141.108.0.9 255.255.255.252
RB (config-if)#ip rip authentication key-chain kal !--- Serial0 ষϞਃ⫼ RIP 䅸䆕ˈᑊᣛᅮՓ⫼ࠡ䴶Ꮖ߯ᓎৡЎ kal ⱘᆚ䩹䫒 RB (config-if)#exit
RB (config)#router rip RB (config-router)#version 2
RB (config-router)#network 141.108.0.0 RB (config-router)#network 80.0.0.0
2ˊ偠䆕㒃᭛ᴀ RIP 䅸䆕
ϟ䴶䗮䖛㾖ᆳ debug ip rip 䇗䆩ੑҸ show ip route ੑҸⱘ䕧ߎֵᙃ᷵偠ҹϞⱘ㒃᭛ᴀ RIP 䅸䆕ᎹℷᐌDŽ㽕ℷᐌᎹˈ᠔᳝ RA Ϣ RB П䯈Ѹᤶⱘ䏃⬅ֵᙃফࠡᖙ乏㒣䖛䅸䆕DŽ
ҹϟᰃ RB Ϟᠻ㸠 debug ip rip ⡍ᴗᓣੑҸⱘ䕧ߎˈҢЁৃҹⳟߎℷᓣফᴹ㞾 RA ⱘ 䏃⬅ᮄࣙࠡ㒣䖛њ㒃᭛ᴀ䅸䆕˄䕧ߎֵᙃЁⱘᠻ㸠⌕ᰃ㞾Ϟ㗠ϟ䖯㸠ⱘ˅DŽ
RB#debug ip rip
RIP protocol debugging is on
๏ฉፌћќڦCiscoୟᆯഗದዃᇑ࠶֩
*Mar 3 02:11:39.207: RIP: received packet with text authentication 234
*Mar 3 02:11:39.211: RIP: received v2 update from 141.108.0.10 on Serial0
*Mar 3 02:11:39.211: RIP: 70.0.0.0/8 via 0.0.0.0 in 1 hops
ҹϟᰃ RB Ϟᠻ㸠 show ip route ⡍ᴗᓣੑҸˈҢЁৃҹⳟߎ RB ᏆҢ RA Ϟᄺдࠄњϔᴵ RIP䏃⬅˄ҹ㉫ԧᄫᰒ⼎˅DŽ
RB#show ip route
R 70.0.0.0/8 [120/1] via 141.108.0.10, 00:00:25, Serial0
RA# configure terminal
RA(config)#key chain kal !---ᅮН RA Ϟⱘᆚ䩹䫒ৡ⿄ kalˈϔϾᆚ䩹䫒ৃҹࣙᣀϾᆚ䩹ˈৃҹϢᇍ RB ッ䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹 䫒ৡ⿄ϡϔḋ
RA (config-keychain)#key 1 !---ᅮН kal ᆚ䩹䫒Ёⱘ 1 োᆚ䩹ˈᖙ乏Ϣᇍッ RB 䏃఼⬅Ϟ䜡㕂ⱘᆚ䩹োϔ㟈˄䖭ϔ⚍Ϣࠡ䴶ҟ㒡ⱘ㒃
᭛ᴀ䅸䆕㽕∖ᰃϡৠⱘ˅
RA (config-keychain-key)#key-string 234 !---ᅮН 1 োᆚ䩹ⱘᆚ䩹ᄫヺІЎ 234ˈᖙ乏Ϣᇍッ RB 䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹ᄫヺІϔ㟈 RA (config-keychain-key)#exit
RA (config-keychain)#exit RA (config)#interface Loopback0
RA (config-if)#ip address 70.70.70.70 255.255.255.255 !---Ў loopback0 ⦃䏃ষᣛᅮ IP ഄഔˈ↣Ͼ䏃⬅఼䗮ᐌᖙ乏䜡㕂ϔϾ⦃䏃
ষ IP ഄഔˈҹℸЎᴀ䏃⬅఼ IDˈԚᅗϡᰃ RIP 䅸䆕᠔ᖙ乏䜡㕂ⱘ RA (config-if)#exit
RA (config)#interface Serial0
RA (config-if)#ip address 141.108.0.10 255.255.255.252
RA (config-if)#ip rip authentication mode md5 !---ᣛᅮ Serial0 ষϞ䞛⫼ MD5 RIP 䅸䆕ᓣ
RA (config-if)#ip rip authentication key-chain kal !--- Serial0 ষϞਃ⫼ RIP 䅸䆕ˈᑊᣛᅮՓ⫼ࠡ䴶Ꮖ߯ᓎৡЎ kal ⱘᆚ䩹䫒 RA (config-if)#exit
RA (config)#router rip RA (config-router)#version 2
RA (config-router)#network 141.108.0.0 RA (config-router)#network 70.0.0.0
RB Ϟⱘ䜡㕂˄ᴀッ᠔䜡㕂ⱘᆚ䩹 IDǃᆚ䩹ᄫヺІ MD5 䅸䆕ᓣᖙ乏㽕Ϣᇍッ䏃⬅఼Ϟ᠔ 䜡㕂ⱘᆚ䩹 IDǃᆚ䩹ᄫヺІ MD5 䅸䆕ᓣᇍᑨϔ㟈ˈԚᆚ䩹䫒ৡ⿄ৃҹϡϔ㟈˅˖
RB>enable
RB# configure terminal
RB(config)#key chain kal !---ᅮН RB Ϟⱘᆚ䩹䫒ৡ⿄ kalˈϔϾᆚ䩹䫒ৃҹࣙᣀϾᆚ䩹ˈৃҹϢᇍ RA ッ䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹䫒 ৡ⿄ϡϔḋ
RB (config-keychain)#key 1 !---ᅮН kal ᆚ䩹䫒Ёⱘ 1 োᆚ䩹ˈᖙ乏Ϣᇍッ RA 䏃఼⬅Ϟ䜡㕂ⱘᆚ䩹োϔ㟈˄䖭ϔ⚍Ϣࠡ䴶ҟ㒡ⱘ㒃
᭛ᴀ䅸䆕㽕∖ᰃϡৠⱘ˅
RB (config-keychain-key)#key-string 234 !---ᅮН 1 োᆚ䩹ⱘᆚ䩹ᄫヺІЎ 234ˈᖙ乏Ϣᇍッ RA 䏃⬅఼Ϟ䜡㕂ⱘᆚ䩹ᄫヺІϔ㟈 RB (config-keychain-key)#exit
RB (config-keychain)#exit RB (config)#interface Loopback0
RB (config-if)#ip address 80.80.80.1 255.255.255.0 !---Ў loopback0 ⦃䏃ষᣛᅮ IP ഄഔˈ↣Ͼ䏃⬅఼䗮ᐌᖙ乏䜡㕂ϔϾ⦃䏃ষ
IPഄഔˈҹℸЎᴀ䏃⬅఼ IDˈԚᅗϡᰃ RIP 䅸䆕᠔ᖙ乏䜡㕂ⱘ
RB (config-if)#exit
RB (config)#interface Serial0
๏ฉፌћќڦCiscoୟᆯഗದዃᇑ࠶֩
RB (config-if)#ip address 141.108.0.9 255.255.255.252
RB (config-if)#ip rip authentication mode md5 !---ᣛᅮ Serial0 ষϞ䞛⫼ MD5 RIP 䅸䆕ᓣ
RB (config-if)#ip rip authentication key-chain kal !--- Serial0 ষϞਃ⫼ RIP 䅸䆕ˈᑊᣛᅮՓ⫼ࠡ䴶Ꮖ߯ᓎৡЎ kal ⱘᆚ䩹䫒 RB (config-if)#exit
RB (config)#router rip RB (config-router)#version 2
RB (config-router)#network 141.108.0.0 RB (config-router)#network 80.0.0.0
4ˊ偠䆕 MD5 RIP 䅸䆕
ৠḋৃҹ䗮䖛䇗䆩ੑҸੑҸᴹ偠䆕ҹϞ䜡㕂ⱘ MD5 RIP 䅸䆕ᰃ৺ℷ⹂ˈϸ䏃⬅఼ᰃ৺䖯㸠 њℷᐌⱘ䏃⬅ֵᙃѸᤶDŽ
ҹϟᰃ RB Ϟᠻ㸠 debug ip rip ⡍ᴗᓣੑҸⱘ䕧ߎֵᙃˈҢЁгৃҹⳟߎℷᓣফᴹ㞾 RAⱘ RIP 䏃⬅ᮄࠡгᰃ㒣䖛њ MD5 䅸䆕˄䕧ߎֵᙃЁⱘᠻ㸠⌕ᰃ㞾Ϟ㗠ϟ䖯㸠ⱘ˅DŽ
RB#debug ip rip
RIP protocol debugging is on
*Mar 3 20:48:37.046: RIP: received packet with MD5 authentication
*Mar 3 20:48:37.046: RIP: received v2 update from 141.108.0.10 on Serial0
*Mar 3 20:48:37.050: 70.0.0.0/8 via 0.0.0.0 in 1 hops
ҹϟᰃ RB Ϟᠻ㸠 show ip route ⡍ᴗᓣੑҸˈҢЁৃҹⳟߎ RB ᏆҢ RA Ϟᄺдࠄњϔᴵ RIP䏃⬅˄ҹ㉫ԧᄫᰒ⼎˅DŽ
RB#show ip route
R 70.0.0.0/8 [120/1] via 141.108.0.10, 00:00:03, Serial0 80.0.0.0/24 is subnetted, 1 subnets
C 80.80.80.0 is directly connected, Loopback0
141.108.0.0/30 is subnetted, 1 subnets C 141.108.0.8 is directly connected, Serial0
5ˊᬙ䱰ᥦ䰸
RIP 䅸 䆕 䜡 㕂 Ё ᳔ ᐌ 㾕 ⱘ ᬙ 䱰 ህ ᰃ 䗮 䖛 䇗 䆩 ੑ Ҹ ᶹ ⳟ ᯊ ᰒ ⼎ ᮴ ᬜ ⱘ 䅸 䆕 ˄ invalid authentication˅ˈབϟ᠔⼎DŽ
RA#debug ip rip
RIP protocol debugging is on
*Mar 1 06:47:42.422: RIP: received packet with text authentication 234
*Mar 1 06:47:42.426: RIP: ignored v2 packet from 141.108.0.9 (invalid authentication)
RB#debug ip rip
RIP protocol debugging is on
*Mar 1 06:48:58.478: RIP: received packet with text authentication 235
*Mar 1 06:48:58.482: RIP: ignored v2 packet from 141.108.0.10 (invalid authentication)
๏ฉፌћќڦCiscoୟᆯഗದዃᇑ࠶֩
ৠᯊ䗮䖛 show ip route ੑҸᶹⳟ䏃⬅ᯊথ⦄コ✊≵᳝ᄺдࠄ䚏ሙ䏃⬅఼Ϟⱘ RIP 䏃⬅DŽϟ䴶 ᰃ RB Ϟ᪡ⱘ⼎՟˖
RB#show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
80.0.0.0/24 is subnetted, 1 subnets
C 80.80.80.0 is directly connected, Loopback0
141.108.0.0/30 is subnetted, 1 subnets
C 141.108.0.8 is directly connected, Serial0
RB#
ॳᕜㅔऩˈህᰃ䜡㕂ϡऍ䜡䗴៤ⱘDŽᔧ䞛⫼㒃᭛ᴀ RIP 䅸䆕ᯊˈϔᅮ㽕⹂ֱҹϟϸϾᮍ䴶ⱘ 䜡㕂Ϣᇍッ䏃⬅఼ⱘᇍᑨ䜡㕂ᰃᅠܼϔ㟈ⱘ˖ϔᰃ᠔䜡㕂ⱘᆚ䩹ᄫヺІˈѠᰃ䅸䆕ᓣᖙ乏䛑ᰃ㒃
᭛ᴀ䅸䆕ᓣ˄咬䅸Ў㒃᭛ᴀ䅸䆕ᓣˈ᮴䳔䜡㕂˅DŽ
㗠ᔧ䞛⫼ MD5 RIP 䅸䆕ᯊˈϔᅮ㽕⹂ֱҹϟϝϾᮍ䴶ⱘ䜡㕂Ϣᇍッ䏃䏃⬅఼Ϟⱘᇍᑨ䜡㕂ᅠ
ܼϔ㟈˖ϔᰃ᠔䜡㕂ⱘᆚ䩹ᄫヺІˈѠᰃ᠔䜡㕂ⱘᆚ䩹 ID˄䖭ϔ㽕∖㒃᭛ᴀ䅸䆕ᓣЁᰃ≵᳝
ⱘ˅ˈϝᰃ䅸䆕ᓣᖙ乏䛑ᰃ MD5 䅸䆕ᓣˈᖙ乏ϧ䮼ᣛᅮDŽ
8.3.4 RIP 䏃⬅∛ᘏ䜡㕂⼎՟ϔ
ᴀ⼎՟ⱘᢧᠥ㒧ᵘབ 8-19 ᠔⼎ˈ䏃⬅఼ⱘষ᠔䖲ⱘ㔥↉Ёഛ᳝ᷛ⊼DŽ㽕خ RIP 䏃⬅∛ᘏᯊ㽕⊼ᛣⱘϔ⚍ᰃˈᑊϡᰃ䳔㽕↣Ͼ䏃⬅఼ˈгϡᰃ䳔㽕ϔϾ䏃⬅఼ⱘ↣Ͼষ䛑ਃ
⫼䏃⬅∛ᘏDŽাᰃ᳝Ͼৠϔᷛޚ㔥㒰Пϟⱘᄤ㔥 RIP 䏃⬅㒣䖛ⱘ䏃⬅఼ⱘᇍᑨষϞᠡৃ㛑䳔 㽕䖯㸠 RIP 䏃⬅∛ᘏ䜡㕂DŽ䖭হ䆱ࣙᣀϸϾᖙᴵӊ˖ϔᰃᖙ乏᳝Ͼ⬅ৠϔϾᷛޚ㔥㒰ᄤ㔥ߦߚ ⱘᄤ㔥䏃⬅㒣䖛ˈѠᰃ䖭ѯᄤ㔥䏃⬅ᖙ乏ᰃ䗮䖛 RIP ᄺдࠄⱘDŽϟ䴶ߚ߿ᇍᴀ⼎՟Ё䏃⬅఼ҹ ঞᅗӀⱘϾষ䖯㸠䏃⬅∛ᘏৃ㸠ᗻᖙ㽕ᗻⱘߚᵤDŽ