[j-nsp] OSPF NBMA

Sean Clarke sean at clarke-3.demon.nl
Fri Mar 27 12:47:38 EDT 2009


If I were you I'd turn on some OSPF traceoptions ... it might tell you 
why it's not working

cheers
Sean


On 3/27/09 11:58 AM, Aamir Saleem wrote:
> Hi All,
>
> I am having problem to established NBMA relationship between two P2P SONET
> interfaces with frame-relay encapsulation. Can anyone tell me what is wrong
> with the following interface and ospf configuration or what else need to be
> added to have neighbor established. I am able to ping P2P ips and NBMA is
> working fine on multipoint interface configuration.
>
> *A-END Configuration*
>
> LAB1<r at LAB1># show interfaces so-0/2/1
> hold-time up 30 down 30;
> encapsulation frame-relay;
> lmi {
>      n391dte 1;
>      n392dte 2;
>      n393dte 3;
>      t391dte 15;
>      lmi-type itu;
> }
> unit 0 {
>      dlci 100;
>      family inet {
>          address 10.0.2.5/30;
>      }
> }
> [edit]
> LAB1<r at LAB1># show protocols ospf
> area 0.0.0.0 {
>      interface so-0/2/1.0 {
>          interface-type nbma;
>          neighbor 10.0.2.6 eligible;
>      }
> }
> [edit]
> LAB1<aamir at LAB1>#
>
> *B-END Configuration*
> **
> LAB2<r at LAB2># show interfaces so-0/2/1
> dce;
> hold-time up 30 down 30;
> encapsulation frame-relay;
> lmi {
>      n392dce 2;
>      n393dce 3;
>      t392dce 25;
>      lmi-type itu;
> }
> unit 0 {
>      dlci 100;
>      family inet {
>          address 10.0.2.6/30;
>      }
> }
> [edit]
> LAB2<r at LAB2># show protocols ospf
> area 0.0.0.0 {
>      interface so-0/2/1.0 {
>          interface-type nbma;
>          neighbor 10.0.2.5 eligible;
>      }
> }
> [edit]
> LAB2<aamir at LAB2>#
>
>
> some ospf outputs
>
> LAB1<r at LAB1># run show ospf interface
> Interface           State   Area            DR ID           BDR ID
> Nbrs
> so-0/2/1.0          DR      0.0.0.0         10.0.5.1
> 0.0.0.0            0
> so-0/2/1.0          DR      0.0.0.0         10.0.5.1
> 0.0.0.0            1
> [edit]
> aamir at LAB1# run show ospf neighbor
> Address          Interface              State     ID               Pri  Dead
> 10.0.2.6         so-0/2/1.0             Down      0.0.0.0            0     0
> 10.0.2.6         so-0/2/1.0             Attempt   0.0.0.0            0     0
> [edit]
> aamir at LAB1#
>
> Why we have two interface and neighbor entries in "show ospf interface" and
> "show ospf neighbor"?
>
>
>
> Regards.
> Aamir
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>
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