[j-nsp] Routing Engine Redundancy

[James Feger]

On Fri, 11 Feb 2005, snort bsd wrote:

> Hi:
>
> I have questions for routing engine redundancy:
>
> root at troy# commit synchronize
> re0:
> configuration check succeeds
> re1:
> [edit interfaces fxp0 unit 0 family inet]
>  'address 192.168.100.196/27'
>    warning: [edit system backup-router] not present.
> The default route for fxp0 is not installed.
> commit complete
> re0:
> commit complete
>
> The scenario is like this: two routing engins with two
> fxp0. Both has the same IP address and the same
> host-name. Here is the configuration:

<snip>

> ...
>
> I am confused about the "backup-router" statement.
> Could anyone here explain it?


You have to specify the backup-router, which is sort of like a default
route for fxp traffic while the box is booting, if I remember correctly.

groups {
     re0 {
         system {
             host-name blah;
             backup-router x.x.x.a;
         }
         interfaces {
             fxp0 {
                 description "10/100 Management";
                 unit 0 {
                     family inet {
                         address x.x.x.b/24;
                     }
                 }
             }
         }
     }
     re1 {
         system {
             host-name blah;
             backup-router x.x.x.a;
         }
         interfaces {
             fxp0 {
                 description "10/100 Management";
                 unit 0 {
                     family inet {
                         address x.x.x.c/24;
                     }
                 }
             }
         }
     }
}

-j