From: Zouta oxpf (zouta.oxpf@gmail.com)
Date: Thu Nov 24 2005 - 10:11:59 GMT-3
Anthony:
If your interfaces are all in IGP, then using ip unnumbered to to that
interface will recurse to that interface during route-recursion, still
blackholing traffic. If your interfaces are not in IGP, and not on same
subnet, BGP peering might not come up, a big dillemma.
Seems like a good question for the Proctor. He/She might allow the creation
of a subnet from within your given address space; If it's not allowed, why
do the Workbook vendors do it so often?
Just a thought.
Happy Thanksgiving to the whole of Groupstudy!
ZO
On 11/23/05, Anthony Sequeira <terry.francona@gmail.com> wrote:
>
> I want to tunnel my iBGP peering from R1 to R4 because R2 is not running
> BGP. I want to use the loopback 0 interfaces for the peerings. The IGP in
> use is EIGRP and all of the interfaces shown below are running EIGRP.
>
>
>
> R1-----4.4.8.0/24-----R2-----4.4.12.0/24-----R4
>
>
>
> R1 lo0 4.4.1.1/24
>
> R4 lo0 4.4.4.4/24
>
>
>
> I have this sample scenario labbed up and I am having a heck of a time. I
> have tried the following with no luck:
>
>
>
> Attempt 1
>
> R1:
>
> int tunnel 0
>
> ip unnumbered lo0
>
> tunnel source 4.4.8.1
>
> tunnel destination 4.4.12.4
>
>
>
> R2:
>
> int tunnel 0
>
> ip unnumbered lo0
>
> tunnel source 4.4.12.4
>
> tunnel destination 4.4.8.1
>
>
>
> Attempt 2
>
> R1:
>
> int tunnel 0
>
> ip unnumbered lo0
>
> tunnel source lo0
>
> tunnel destination 4.4.4.4
>
>
>
> R2:
>
> int tunnel 0
>
> ip unnumbered lo0
>
> tunnel source lo0
>
> tunnel destination 4.4.1.1
>
>
>
> You see this is easy and works great if I create a new subnet for the
> tunnel and use that in my BGP peerings the issue that I am having is
> trying to use the loopback addresses for the peerings and still use my
> tunnel.
>
>
>
> I notice that my tunnel interface does not show up in the routing table
> when
> I am pulling the address from the loopback..I guess this must be why my
> BGP
> is not using it????
>
>
>
> Anyone feel like labbing this one up and trying this one? Or is it
> something
> really simple that I am missing about tunnels?
>
>
>
> Thanks in advance for you consideration of this e-mail.
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Thu Dec 01 2005 - 09:12:07 GMT-3