3.5.5 Packet Tracer - Configure DTP

configure dtp addressing table six pieces six pieces and three switches three switches verify belong configuration on s1 show build and brief go to as one click here and command line interface enter enable to go privilege exec mode and show vlan brief okay repeat step 1i on s2 and s3 okay you can see belong one belong 99 belong 999 great s2 enter enable show belong brief okay the same belongs 199 999 another vlans has 3 enter enabled show vlan brief belong 199 999 and another belongs what villains are configured on the switches belong 99 and 999. okay bilan wang is the default belong is set by default this another belance also said by default okay go to s1 99 and 999 configure it belongs s2 the same way okay and create additional belongs on s2 and s3 okay go to s2 go to global configuration mode configure terminal and create vlan change and name vlan change name red key sensitive okay key sensitive uh create belongs 20 and 30 according to the table below okay 10 already created create 20 and 30 billion 20 name blue milan 3d name yellow okay be careful key sensitive and exit verify okay on s2 exit again and show vlan brief now you can see 110 20 30 99 199 in addition to the default belongs which values are configured on s2 okay 10 20 30 99 and 999 another billions are set by default repeat the previous steps to create additional vlans on s3 ok click here on s3 configure terminal bill and tank name red bill and 20 name blue key sensitive and billing theory the name yellow exit okay be careful with the names assign belongs to ports use the switchboard mode access command to set the access mode for the access links use the switchboard access belong to assign a vlan to an access port okay and use this table this is the first example the configuration on s2 okay go to s2 click here configure your terminal now s2 from 1 to 8 to vlan 10 okay so use interface range command to select multiple interfaces 128 and switch port more access okay first switchboard mode access okay and then access switchboard access bill and 10 enter okay bill and 10. s2 from 9 to 16 okay from 9 to 16 switchboard mode also vlan 20 switch for access build 20 and from 17 to 24 on s2 milan theory 17 to 24 switchboard mode axis switchboard access milan 3d okay this example is just this okay okay exit and assignment supports on s3 using the assignments from the table above okay use this table again for s3 click here you are on global configuration mode so select multiple interfaces s3 128 vlan 10 interface range fresh internet 128 switch port mode axis search for access billing 10 9 to 16 billion 20 9 to 16 million 20 17 to 24 billion 30 17 to 24 billion theory x okay this is the solution and now that you have the ports assigned to belongs try the ping from pc1 to pc6 from pc1 try to ping pc6 go to pc1 verify is configured very good and go to command prompt ping and on pc6 pc6 ip otherwise is this 10.2 okay 182 168 10.2 okay this ip on pc6 okay on pc one enter typing fails was the ping successful explain no things were not successful this is because the ports that connect the switches are not configured as trunks to carry traffic from multiple belongs according to the shopping lamprey output port gigabit zero one and gigabit zero two are still access ports members of bilangua okay so the connection between s2 and s1 is this link and it's not a trunk and the connection from s1 to s3 is not a trunk okay how you can verify this you can verify on for example on s2 exit shelby land brief now and you can see gigabit zero one this interface gigabit zero one okay it's assigned it to bilan one and it's an access port also you can use show interface trunk and no trunks configured the same way go to s1 show bill and brief again and now you can see gigabit zero one and zero two assign it to bilangua and success sports okay gigabit zero one and gigabit zero two okay access ports show interface trunk no trunks okay also you can verify on s3 okay and configure trunks on s1 s2 and s3 dynamic trunking protocol dtp manages the trunk links between cisco switches currently all the switch ports are in the default ranking mode which is dynamic auto okay dynamic out of the default you will change the trunking mode to dynamic desirable for the link between switches s1 and s2 okay this link dynamic desirable the link between switches s1 and s3 will be set as a static track okay this is another link static tron just belong 999 as the native lang in this topology on switch s1 configure trunk link to dynamic desirable on gigabit 01 interface okay on this one and this interface gigabit zero one go to s1 configure terminal interface uv01 switch port mode dynamic disks desirable enter okay this is the comma this is this is the command and the messages what will be the result of strong negotiation between s1 and s2 the trunk will be successfully negotiated because the port on s2 is the default dynamic auto mode when you set on this side dynamic desirable and another side by default is set to dynamic auto the trunk is successfully negotiated okay is successfully established and verify go to s2 enter show interface trunk gigabit 01 is a trunk okay this the mode is dynamic auto encapsulation ao2 that one queue trunking and for now uses milan one let's donate below and go to s1 verify and show villa show interface is trunk gigabit zero one dynamic desirable encapsulation l2 that one q trunking native language ok os2 verified with show interface trunk command okay on s2 this is the show interface trunk and this is the output what is the mode and status for this port the switch port is in auto mode which is the default and the port is trunking okay auto and trunking trunky for the trunk link between s1 and s3 configure interface gigabit 0 2 as a static trunk link on s1 okay gigabit 0 2 on s1 static static track okay configure terminal interface gigabit zero two switch port modern enter enter and in addition disable dtp negotiation on interfacing with zero two okay on this interface disable dtp switchboard no negotiate enter okay very good and show dtp command to verify the status of dtp okay and on privilege excel mode show dtp okay and you will see one interface using dtp only this interface using dtp gigabit zero one that is configured with dynamic desirable but gigabit zero two is static if you will see two interfaces here wait a moment and repeat show dtp okay now verify trunking is enabled on s1 show interface strong show interface trunk okay gigabit zero one desirable uh dynamic desirable encapsulation a02 that one queue okay native language and gigabit zero two this another side mode on is a static encapsulation a02 that one q trunky nativilan okay but look at the difference this is n l2 that one queue and this is ao2 that one queue the difference that this is negotiated for n negotiated okay because it's configured with dynamic desirable okay static is not negotiate what is the native lung for these trunks okay native lung one configure belong 999 as the native noun for the trunk links on s1 okay both interfaces you gonna be tier one and zero two these two interfaces on this one enter configure terminal interface range you're gonna be zero one and zero two and you switch switch port trunk not deep belong 999 enter okay what messages did you receive on last one how would you correct it okay you can see this [Music] blocking gigabit tier one inconsistent local villa nothing belong mismatch native mismatch discovered okay and okay on on this one on this side on gigabit zero two on s1 you can figure it belong uh 999 with the native lang on s3 gigabit zero two is still native one okay the same way on this side gigabit 01 on s1 is configured with the tv 999 but the nativity line by default on gigabit zero one on s2 is belong one okay so you got these messages for gigabit tier one and you can be zero two okay uh to correct the tp long mismatch configure belong 999 as the native lang on s2 and s3 okay on s2 and s3 configure belong 999 as the matibila okay go to s2 gigabit zero one enter configure terminal interface gigabit tier one on s2 switch port trunk tbila 999 okay exit okay and on this one you will see this message unblocking gigabit zero one port consistency restore very good okay and access s3 enter enable configure terminal interface gigabit zero to switch port trunk native milan 900 enter verify trunking on all the switches okay s2 and show bill um show interface run okay gigabit zero one trunk okay go to s1 enter and show interface trunk okay gigabit zero one and zero two okay very good and go to s3 okay note that this interface is in orange okay and so interface okay no trunks okay no trunk and don't worry about this because you configured this with native lang but it's not configured still is not configured with a static trunk okay remember this link was not negotiated because dtp was disabled was disabled as one gigabit zero two okay you should be able to ping one switch from another switch in the topology using the ip addresses okay for example [Music] from s1 from s1 click on s1 enter pink to switch s2 s2 iprs in 180 168 992 192 168 992 okay ctrl shift 6 99 to enter okay success repeat create success and now from s1 ping s3 is 993 93 okay ping fails because this link was not negotiated okay it's not trunk so don't worry if ping fails you will fix this [Music] attempt to ping from pc1 to pc6 pc1 to pc6 okay repeat the pin to 182.168.102 the ip address of pc6 10.2 enter okay pink is failing and ping fails okay why was the pink unsuccessful use showbill and brief show interface trunk okay pings were unsuccessful because the link between s1 and s3 was not negotiated as a trunk okay go to s3 and you will see show interface trunk with no trunks okay so this link is not a trunk and also because belongs 10 20 and 30 were not configured on s1 okay correct the configuration is necessary okay go to s1 enter configure terminal bill and 10 name red okay bill and chang name red okay key sensitive remember this table okay vlan name blue and black 3d name yellow key sensitive okay exit okay add this three vlans on s1 okay that's one and also configure gigabit zero two on s3 static trunk okay show interface strong on s3 okay enter enter show interface strong no trunks what is the mode and encapsulation on gigabit zero two okay trunk was not negotiated because s1 gigabit zero two is set to no negotiate the interfacial v02 on s3 is still in access mode okay gigabit 202 on s1 is set to no negotiate and gigabit zero two okay go to s3 show below brief and you can see uh gigabit zero two is a still part of milan one as access mode okay com configure ub02 to match gigabit 02 on s1 okay configure terminal interface gigabit 02 switch port mode trunk enter enter okay switchboard mode trunk and previously on gigabit zero two switchboard trunk native vlan 999 was configured okay go to s1 enter wait for the green indicator okay and now it's green okay very good what is the mode and encapsulation on gigabit zero two after the change okay go to s3 and show interface trunk gigabit zero two mode on static encapsulation l2 that one queue trunk in a typical 899 show interface gigabit 02 switch port so yeah interface gigabit 02 switch port okay this command okay what is the negotiation of trunking okay uh gigabit zero two on s3 negotiation on trunking is on okay but review the s1 gigabit 02 so access is one and show interfacing with zero two switch port okay and negotiation of trunking is off okay so configure s3 to match that configuration and go to s3 okay on s3 configure terminal interface you can be 02 and switch port no negotiate no negotiate enter and and reveal show interfacing with zero to switch port on s3 on s3 enter and now the space the negotiation of trunking off very good verify end to end connectivity pc1 ping pc6 pc1 repeat the ping to pc6 and now success pc2 pc5 pc2 pink pc5 ip address 20.2 go to pc2 182 168 20.2 success and go to pc3 pc3 to pc4 okay pc3 command prompt okay ping pc4 theordy.2 1921 sorry 192.168. clearly that success completion 100 thank you very much you

Channel: Christian Augusto Romero Goyzueta

Views: 4,083

Keywords: switching, routing, wireless, essentials, srwe, ipv4, switch 2960, switch, vlan, trunk, native vlan, trunking, dtp, dynamic trunking protocol, dynamic desirable, dynamic auto

Id: BFmexpOd5j0

Length: 31min 30sec (1890 seconds)

Published: Fri Jul 31 2020