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EIGRP and Route Summarisation

Discussion in 'Routing & Switching' started by keconnect sparky, Jan 27, 2009.

  1. keconnect sparky

    keconnect sparky Nibble Poster

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    Hey peeps,

    Got my big day tomorrow and got the day off for some extra cramming :blink

    Cant get my head round this last minute cram of mine;

    I have the following loopback addresses on RouterA (to simulate networks)
    172.168.8.0
    172.168.9.0
    172.168.10.0
    172.168.11.0

    topology is as follows:
    RouterA --->Switch---->RouterB---->RouterC
    Ethernet Ethernet Serial


    Now:
    RouterA#show ip route
    Gateway of last resort is 0.0.0.0 to network 0.0.0.0

    D 192.168.10.0/24 [90/284160] via 192.168.1.2, 00:21:45, Ethernet0/0
    172.168.0.0/24 is subnetted, 4 subnets
    C 172.168.8.0 is directly connected, Loopback8
    C 172.168.9.0 is directly connected, Loopback9
    C 172.168.10.0 is directly connected, Loopback10
    C 172.168.11.0 is directly connected, Loopback11
    C 192.168.1.0/24 is directly connected, Ethernet0/0

    As you can see i have the loopbacks all setup and have added the relevant config to EIGRP

    router eigrp 10
    network 172.168.0.0
    network 192.168.1.1 0.0.0.0
    no auto-summary

    Idea being i want summarise these updates via route Summarisation over EIGRP, now i have worked out what i need to advertise:

    172.16.8.0 /22 will encompass the above networks, now this is where i get abit confused :eek:
    I believe for me to do this i need to use the ip summary-address command at the interface level:


    interface Ethernet0/0
    description Connection to C2924M
    ip address 192.168.1.1 255.255.255.0
    no ip proxy-arp
    ip nat inside
    ip flow ingress
    ip summary-address eigrp 10 172.16.8.0 255.255.252.0 5
    half-duplex
    hold-queue 100 out


    But Router 2 + 3 still shows the routes individually:

    Router2
    C 192.168.10.0/24 is directly connected, FastEthernet0/0.10
    172.168.0.0/24 is subnetted, 4 subnets
    D 172.168.8.0 [90/156160] via 192.168.1.1, 00:30:13, FastEthernet0/0
    D 172.168.9.0 [90/156160] via 192.168.1.1, 00:30:13, FastEthernet0/0
    D 172.168.10.0 [90/156160] via 192.168.1.1, 00:30:13, FastEthernet0/0
    D 172.168.11.0 [90/156160] via 192.168.1.1, 00:30:13, FastEthernet0/0

    Router3
    D 192.168.10.0/24 [90/2172416] via 192.168.2.1, 00:31:39, Serial0
    172.168.0.0/24 is subnetted, 4 subnets
    D 172.168.8.0 [90/2300416] via 192.168.2.1, 00:31:39, Serial0
    D 172.168.9.0 [90/2300416] via 192.168.2.1, 00:31:39, Serial0
    D 172.168.10.0 [90/2300416] via 192.168.2.1, 00:31:39, Serial0
    D 172.168.11.0 [90/2300416] via 192.168.2.1, 00:31:39, Serial0


    I have ran the clear ip route * but nothing....

    What have i overlooked?
     
    Certifications: MCP, CCENT, CCNA, CCNA-S
    WIP: CCNP (ROUTE)
  2. Spice_Weasel

    Spice_Weasel Kilobyte Poster

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    45
    Take a look at the ip addresses you assigned to the loopbacks, and the summary address you configured. I think you'll spot the problem ;)

    Spice_Weasel
     
    Certifications: CCNA, CCNP, CCIP, JNCIA-ER, JNCIS-ER,MCP
    WIP: CCIE
  3. keconnect sparky

    keconnect sparky Nibble Poster

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    :oops: ..... right i am calling it quits for today - my head hurts and i think i have reached saturation point!

    Cheers mate
     
    Certifications: MCP, CCENT, CCNA, CCNA-S
    WIP: CCNP (ROUTE)
  4. keconnect sparky

    keconnect sparky Nibble Poster

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    Just got back from the exam center with my PASS! ...i got my CCNA today! :0)
    YYYYYY--AYE!!!!!
     
    Certifications: MCP, CCENT, CCNA, CCNA-S
    WIP: CCNP (ROUTE)
  5. GiddyG

    GiddyG Terabyte Poster Gold Member

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    Major congrats! Hard work does pay off... again. :D
     
  6. Spice_Weasel

    Spice_Weasel Kilobyte Poster

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    Congrats, well done!

    Spice_Weasel
     
    Certifications: CCNA, CCNP, CCIP, JNCIA-ER, JNCIS-ER,MCP
    WIP: CCIE
  7. BosonMichael
    Highly Decorated Member Award

    BosonMichael Yottabyte Poster

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    Congrats!
     
    Certifications: CISSP, MCSE+I, MCSE: Security, MCSE: Messaging, MCDST, MCDBA, MCTS, OCP, CCNP, CCDP, CCNA Security, CCNA Voice, CNE, SCSA, Security+, Linux+, Server+, Network+, A+
    WIP: Just about everything!
  8. Qs

    Qs Semi-Honorary Member Gold Member

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    Well done.

    It's nice to see someone obtaining the CCNA legitimately! :)

    Qs
     
    Certifications: MCT, MCSE: Private Cloud, MCSA (2008), MCITP: EA, MCITP: SA, MCSE: 2003, MCSA: 2003, MCITP: EDA7, MCITP: EDST7, MCITP: EST Vista, MCTS: Exh 2010, MCTS:ServerVirt, MCTS: SCCM07 & SCCM2012, MCTS: SCOM07, MCTS: Win7Conf, MCTS: VistaConf, MCDST, MCP, MBCS, HND: Applied IT, ITIL v3: Foundation, CCA
  9. keconnect sparky

    keconnect sparky Nibble Poster

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    Many thanks everyone!
    Dam, you just cant beat that "passing an exam" feeling - i'll be buzzing for days!
     
    Certifications: MCP, CCENT, CCNA, CCNA-S
    WIP: CCNP (ROUTE)
  10. MarkOfBorg

    MarkOfBorg New Member

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    Congratulations!! Now get to work on that CCNP :biggrin
     
    Certifications: MCTS (SQL Server 2005), CCENT, CCNA
    WIP: CCNA: Security
  11. craigie

    craigie Terabyte Poster

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    Awesome work, well done!
     
    Certifications: CCA | CCENT | CCNA | CCNA:S | HP APC | HP ASE | ITILv3 | MCP | MCDST | MCITP: EA | MCTS:Vista | MCTS:Exch '07 | MCSA 2003 | MCSA:M 2003 | MCSA 2008 | MCSE | VCP5-DT | VCP4-DCV | VCP5-DCV | VCAP5-DCA | VCAP5-DCD | VMTSP | VTSP 4 | VTSP 5

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