[j-nsp] selecting 2ndary addresses to advertise in OSPF

[Stacy W. Smith]

You can actually specify an IP as an argument to the 'interface' command under [edit protocols ospf area <area>] instead of the normal interface name. When you do so, it only advertises the single prefix.

Something like this should meet your need:

user at host> show configuration interfaces lo0 
unit 0 {
    family inet {
        address 100.252.3.2/32 {
            primary;
            preferred;
        }
        address 100.252.3.1/32;
        address 100.255.196.1/32;
        address 100.253.246.1/32;
    }
}

user at host> show configuration protocols ospf 
area 0.0.0.3 {
    interface 100.252.3.2 {
        passive;
    }
    interface 100.252.3.1 {
        passive;
    }
}

user at host> show ospf database detail 

    OSPF link state database, Area 0.0.0.3
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len 
Router  *100.252.3.2      100.252.3.2      0x80000003    33  0x22 0xfb8c  48
  bits 0x0, link count 2
  id 100.252.3.2, data 255.255.255.255, Type Stub (3)
  TOS count 0, TOS 0 metric 0
  id 100.252.3.1, data 255.255.255.255, Type Stub (3)
  TOS count 0, TOS 0 metric 0


Unfortunately, I don't believe you can do anything equivalent for OSPF3.

--Stacy


On Feb 22, 2011, at 1:43 PM, Bit Gossip wrote:

> Experts,
> in a setup like this one, once lo0.0 is put in ospf ALL of it addresses
> are advertised by OSPF. Is it possible to select which addresses to
> advertise?
> Redistributing direct is not an option because will make them external.
> Thanks,
> bit.
> 
>    lo0 {
>        unit 0 {
>            family inet {
>                address 100.252.3.2/32 {
>                    primary;
>                    preferred;
>                }
>                address 100.252.3.1/32;
>                address 100.255.196.1/32;
>                address 100.253.246.1/32;
> 
> ospf {
>    area 0.0.0.3 {
>        interface lo0.0 {
>            passive;
> 
> 
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