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Thread: Ccna routing protocols and subinterfaces

  1. #1
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    Default Ccna routing protocols and subinterfaces

    I am new to the cisco world have completed module 1-3 now looking to do module 4 then to the ccna exam...been doing some practice labs in one of my labs I have created a few vlans on a switch and the corresponding subinterfaces on the router to match those vlans along with the native however the problem is now I am trying to get those the networks of the subinterfaces in a routing protocol eg...rip, eigrp or ospf so I can route them to other routers for connection and communication with the outside networds but no matter what I tried its just now working the routes arent being distributed. So now it leaves me to wonder is it possible to route subinterfaces within a routing protocol and if so who is it done


    PLEASE HELP!

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    Quote Originally Posted by NEW TECHIE View Post
    I am new to the cisco world have completed module 1-3 now looking to do module 4 then to the ccna exam...been doing some practice labs in one of my labs I have created a few vlans on a switch and the corresponding subinterfaces on the router to match those vlans along with the native however the problem is now I am trying to get those the networks of the subinterfaces in a routing protocol eg...rip, eigrp or ospf so I can route them to other routers for connection and communication with the outside networds but no matter what I tried its just now working the routes arent being distributed. So now it leaves me to wonder is it possible to route subinterfaces within a routing protocol and if so who is it done


    PLEASE HELP!
    Post the config. Use a text file or use forum codes. Did you configure the trunk properly? Did you enable the routing protocols and advertise all relevant networks?

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    IP ROUTE
    =================================
    Gateway of last resort is not set

    8.0.0.0/30 is subnetted, 1 subnets
    D 8.8.8.0 [90/2681856] via 10.0.54.5, 00:04:22, Serial0/0/0
    10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
    C 10.0.50.0/24 is directly connected, FastEthernet0/0.30
    C 10.0.53.0/24 is directly connected, FastEthernet0/0.20
    C 10.0.54.0/30 is directly connected, Serial0/0/1
    C 10.0.54.4/30 is directly connected, Serial0/0/0
    D 10.0.54.8/30 [90/2681856] via 10.0.54.5, 00:04:22, Serial0/0/0
    [90/2681856] via 10.0.54.1, 00:04:20, Serial0/0/1
    C 10.0.54.16/30 is directly connected, FastEthernet0/0.23
    =================================================

    RUNNING CONFIG
    =================================================
    interface FastEthernet0/0
    no ip address
    duplex auto
    speed auto
    !
    interface FastEthernet0/0.20
    encapsulation dot1Q 20
    ip address 10.0.53.1 255.255.255.0
    !
    interface FastEthernet0/0.23
    encapsulation dot1Q 23 native
    ip address 10.0.54.18 255.255.255.252
    !
    interface FastEthernet0/0.30
    encapsulation dot1Q 30
    ip address 10.0.50.1 255.255.255.0
    !
    interface FastEthernet0/1
    no ip address
    duplex auto
    speed auto
    shutdown
    !
    interface Serial0/0/0
    ip address 10.0.54.6 255.255.255.252
    !
    interface Serial0/0/1
    ip address 10.0.54.2 255.255.255.252
    !
    interface Vlan1
    no ip address
    shutdown
    !
    router eigrp 90
    network 10.0.54.4 0.0.0.3
    network 10.0.54.0 0.0.0.3
    no auto-summary
    !

    So far all the subinterface are in the routing table as directly connected which is corrected but my question is do I need to enter all the subinterface networks in the eigrp process to have them advertise and also is it possible to use a summerized route and which interface should I place it on if possible?
    Last edited by Arch_Angel; Dec 12, 2012 at 02:01 PM. Reason: merged multiple posts

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    Quote Originally Posted by NEW TECHIE View Post
    So far all the subinterface are in the routing table as directly connected which is corrected but my question is do I need to enter all the subinterface networks in the eigrp process to have them advertise and also is it possible to use a summerized route and which interface should I place it on if possible?
    What is the topology? I see router on a stick here. If you have other routers connected to this one then show an ip route from that router.

  5. #5
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    Add each network, currently you are only advertising the networks on the serial interface. The sub-interfaces should be treated the same way also can't be summarized based on your addressing scheme. For example you could summarize network with 10.0.54.0 0.0.0.255. I use OSPF on my network so I not as sharp on eigrp as I used to be but that should be close.

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    yes u shud advertise di networks 10.0.50 and 53 networks with di 0.0.0.255 an ll of the networks shud come under it
    Dip,Bsc,CCNA,CCSP,MCP.. Up next MCSA WINDOWS 8, CCNA SECURITY,CCNP SWITCH,
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