[j-nsp] Loopback interface and rib-groups

[Alex Arseniev]

You don't have to do that with lo0 interface routes in JUNOS.
Configure lo0.<nonzero-unit-number> with same IP, put it in Salt RI and it 
will work.
HTH
Rgds
Alex

----- Original Message ----- 
From: "Alexander Shikoff" <minotaur at crete.org.ua>
To: <juniper-nsp at puck.nether.net>
Sent: Sunday, March 25, 2012 3:39 AM
Subject: [j-nsp] Loopback interface and rib-groups


> Hello List,
>
> I have lo0.0 interface in default routing table :
>
> minotaur at br1-gdr.ki# show interfaces lo0
> unit 0 {
>    family inet {
>        address 109.68.40.32/32;
>    }
> }
>
> minotaur at br1-gdr.ki# run show route 109.68.40.32/32 table inet.0
>
> inet.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 109.68.40.32/32    *[Direct/0] 00:38:51
>                    > via lo0.0
>
>
> I export interface route to other routing instance:
> [edit]
> minotaur at br1-gdr.ki# show routing-options interface-routes
> rib-group inet rg-Main2Salt;
>
> [edit]
> minotaur at br1-gdr.ki# show routing-options rib-groups rg-Main2Salt
> import-rib [ inet.0 Salt.inet.0 ];
>
> [edit]
> minotaur at br1-gdr.ki# run show route 109.68.40.32/32 table Salt
>
> Salt.inet.0: 399123 destinations, 407025 routes (399121 active, 0 
> holddown, 2 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 109.68.40.32/32    *[Direct/0] 00:33:52
>                    > via lo0.0
>
> But when I'm trying to ping 109.68.40.32 via interface in Salt instance
> I get replies not from 109.68.40.32:
>
> /home/minotaur>ping 109.68.40.32
> PING 109.68.40.32 (109.68.40.32): 56 data bytes
> 64 bytes from 109.68.40.225: icmp_seq=0 ttl=61 time=0.933 ms
> 64 bytes from 109.68.40.225: icmp_seq=1 ttl=61 time=0.904 ms
> ^C
> --- 109.68.40.32 ping statistics ---
> 2 packets transmitted, 2 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 0.904/0.919/0.933/0.014 ms
>
> 109.68.40.225 is an adress of interface in Salt instance:
> minotaur at br1-gdr.ki# show interfaces xe-1/3/0
> unit 0 {
>    description Core;
>    family inet {
>        no-redirects;
>        address 109.68.40.225/29;
>    }
> }
>
> What's wrong? Thanks in advance!
>
> -- 
> MINO-RIPE
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