[j-nsp] Weighted default routes in JunOS?

[Rich Salaiz]

Hi Chris --

It sounds like you are referring to the IOS concept of floating static 
routes?  Where the same static route destination has multiple next-hops, 
each with a different administrative distance?

If so, Junos has a similar concept called qualified next-hops, where a 
static route destination can have multiple next-hops, each with a different 
route preference (similar to administrative distance).

Here is a link for a description of the concept:

http://www.juniper.net/techpubs/software/junos54/swconfig54-routing/html/routing-tables-config6.html#1020874

And here is a link for an example:

http://www.juniper.net/techpubs/software/junos54/swconfig54-routing/html/routing-tables-config7.html#1020905

And here is an example:

routing-options {
   static {
     route 10.0.0.0/8 {
       next-hop [192.168.1.2]
       qualified-next-hop 192.168.1.254 {
         preference 5;
       }
       preference 7;
     }
   }
}

-rich

At 05:49 PM 9/20/2002, Chris Watson wrote:
>I was talking to a friend today about a problem I was having and he 
>mentioned something off the cuff as we were chatting, about how he was 
>setting weighted default routes in IOS. I was wondering if JunOS has a 
>similar feature. Let me give an example (from memory) of what he was saying.
>
>0.0.0.0/0 interface s0/0
>0.0.0.0/0 interface s0/1 10
>0.0.0.0/0 interface s0/2 20
>
>Would enable a default route on s0/0 and if that failed fall over to the 
>default route on s0/1 and if that fails fall over to s0/2. Using numerical 
>preference like you would for an MX host. Try the default first if that 
>fails try the default route with a value of 10 then 20
>etc..
>The above supposedly gets you a default route even if an interface goes 
>down that is marked as the default GW. Can you achieve something like this 
>in JunOS?
>
>Chris
>--
>"I feel..thin. Sort of stretched, like... butter scraped over too much 
>bread. I need a holliday a very long holliday."
>
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