[j-nsp] unreachable indirect next-hop-static

[amin amin]

In indirect next-hop should it need route define at r3 for prefix
10.10.10/30?
here is the configuration:
logical-systems {
    r1 {
        interfaces {
            ge-2/1/6 {
                unit 1 {
                    vlan-id 1;
                    ##
                    ## invalid path element 'aggregated-ether-options'
                    ##
                    family inet {
                        address 10.10.10.1/30;
                    }
                }
            }
        }
        routing-options {
            static {
                route 0.0.0.0/0 next-hop 10.10.10.2;
            }
        }
    }
    r2 {
        interfaces {
            ge-2/1/7 {
                unit 1 {
                    vlan-id 1;
                    ##
                    ## invalid path element 'aggregated-ether-options'
                    ##
                    family inet {
                        address 10.10.10.2/30;
                    }
                }
                unit 2 {
                    vlan-id 2;
                    ##
                    ## invalid path element 'aggregated-ether-options'
                    ##
                    family inet {
                        address 100.100.100.1/30;
                    }
                }
            }
        }
        protocols {
            ospf {
                area 0.0.0.0 {
                    interface ge-2/1/7.2;
                }
            }
        }
    }
    r3 {
        interfaces {
            ge-2/1/6 {
                unit 2 {
                    vlan-id 2;
                    ##
                    ## invalid path element 'aggregated-ether-options'
                    ##
                    family inet {
                        address 100.100.100.2/30;
                    }
                }
                unit 3 {
                    vlan-id 3;
                    ##
                    ## invalid path element 'aggregated-ether-options'
                    ##
                    family inet {
                        address 20.20.20.1/30;
                    }
                }
            }
        }
        protocols {
            ospf {
                area 0.0.0.0 {
                    interface all;
                }
            }
        }
    }
    r4 {
        interfaces {
            ge-2/1/7 {
                unit 3 {
                    vlan-id 3;
                    ##
                    ## invalid path element 'aggregated-ether-options'
                    ##
                    family inet {
                        address 20.20.20.2/30;
                    }
                }
            }
        }
        protocols {
            ospf {
                area 0.0.0.0 {
                    interface all;
                }
            }
        }
        routing-options {
            static {
                route 10.10.10.0/30 {
                    next-hop 100.100.100.1;
                    resolve;
                }
            }
        }
    }
}
interfaces {
    ge-2/1/6 {
        vlan-tagging;
    }
    ge-2/1/7 {
        vlan-tagging;
    }
}

[edit]
lab# run show route 10.10.10.1 logical-system r3

[edit]
lab# run show route 10.10.10.1 logical-system r4

inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

10.10.10.0/30      *[Static/5] 00:21:17, metric2 2
                    > to 20.20.20.1 via ge-2/1/7.3

[edit]
lab# run show route 20.20.20.2 logical-system r1

inet.0: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

0.0.0.0/0          *[Static/5] 00:20:40
                    > to 10.10.10.2 via ge-2/1/6.1

[edit]
lab# run traceroute 10.10.10.1 logical-system r4
traceroute to 10.10.10.1 (10.10.10.1), 30 hops max, 40 byte packets
 1  20.20.20.1 (20.20.20.1)  0.388 ms !N  0.298 ms !N  0.273 ms !N

[edit]
lab# run traceroute 20.20.20.1 logical-system r1
traceroute to 20.20.20.1 (20.20.20.1), 30 hops max, 40 byte packets
 1  10.10.10.2 (10.10.10.2)  0.388 ms  0.289 ms  0.276 ms
^C
[edit]

rgds,
samin

On Sat, Nov 28, 2009 at 11:05 AM, Stefan Fouant <
sfouant at shortestpathfirst.net> wrote:

> > -----Original Message-----
> > From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-
> > bounces at puck.nether.net] On Behalf Of amin amin
> > Sent: Friday, November 27, 2009 7:38 PM
> >
> > Can Junos do indirect next-hop static, let me say
> > r1-r2-r3-r4
> > r4 should reach r1 using static route with gateway 100.100.100.1
> > r1 using default route static
> > r2-r3-r4 are using ospf protocol area 0
> > r1's IP to r2 = 10.10.10.1/30
> > r2's IP to r1 = 10.10.10.2/30
> > r2's IP to r3 = 100.100.100.1/30
> > r3's IP to r2 = 100.100.100.2/30
> > r3's IP to r4 = 20.20.20.1/30
> > r4's IP to r3 = 20.20.20.2/30
> >
> > when I check availble route 10.10.10/30 at r4, it's always shown up.
> > but it
> > never be reached
> > the configuration at r4 for static route
> > set routing-option static route 10.10.10/30 next-hop 100.100.100.1
> > resolve
> > set routing-option forwarding-table indirect-next-hop
> >
> >
> > the configuration static route at r1
> > set routing-option static route 0/0 next-hop 10.10.10.2
>
> What happens when you do a traceroute?  Based on your configs, I imagine
> the
> packets would get dropped on r3 as there is no route defined on r3 to reach
> the 10.10.10/30 subnet.
>
> Also, you do not need to do 'set routing-options forwarding-table
> indirect-next-hop'.  That has nothing to do with the 'resolve' keyword
> under
> [edit routing-options static route].  Rather, it is used to improve route
> convergence time by abstracting a level of recursion so that fewer route to
> forwarding next-hop bindings need to be updated when underlying next-hop
> paths are changed.  More details on that can be found via the link below:
>
>
> http://www.juniper.net/techpubs/software/junos/junos92/swconfig-routing/enab
> ling-an-indirect-next-hop.html<http://www.juniper.net/techpubs/software/junos/junos92/swconfig-routing/enab%0Aling-an-indirect-next-hop.html>
>
> Stefan Fouant
> www.shortestpathfirst.net
> GPG Key ID: 0xB5E3803D
>
>


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