[j-nsp] no inet.2 for multicast RPF etc. by default?

[Leonard Giuliano]

Pekka,

Yes, inet.0 is used by default.  If you want pim and/or msdp to use
inet.2, you just need to configure these protocols to do so.

protocols {
    msdp {
        rib-group inet pim-rg;
    }
    pim {
        rib-group inet pim-rg;
    }
}


-Lenny

On Tue, 15 Apr 2003, Pekka Savola wrote:

-) Hi,
-)
-) It seems to me that Juniper does not use inet.2 at all by default.
-)
-) That is, even if I configure routes for inet.2 or use MBGP to distribute
-) multicast routes when unicast/multicast topology is not congruent, Juniper
-) only uses inet.0 by default.
-)
-) This seems *odd*.  The desired behaviour should be to always look for
-) inet.2 first, and if it fails, look at inet.0 (or so I've been believing).
-) Otherwise, being transit using MBGP (for example) would likely break RPF
-) quite badly.
-)
-) Am I missing something?
-)
-) --8<--
-) Configure PIM RPF Routing Table
-) By default, PIM uses inet.0 as its Reverse Path Forwarding (RPF) routing
-) table group. PIM uses an RPF routing table group to resolve its RPF
-) neighbor for a particular multicast source address and to resolve the RPF
-) neighbor for the RP address. PIM can optionally use inet.2 as its RPF
-) routing table group. To do this, add the rib-groups statement at the [edit
-) routing-options] hierarchy level.
-)
-) routing-options {
-)     rib-groups {
-)         pim-rg {
-)             import-rib inet.2;
-)          }
-)     }
-) }
-) protocols {
-)     pim {
-)         rib-group inet pim-rg;
-) --8<--
-) blah at foo> show route x.y.0.0
-)
-) inet.0: 153 destinations, 215 routes (152 active, 0 holddown, 1 hidden)
-) + = Active Route, - = Last Active, * = Both
-)
-) x.y.0.0/16     *[BGP/170] 16:10:57, MED 0, localpref 200, from 172.31.5.199
-)                       AS path: 65300 I
-)                     > to a.b.c.177 via ge-1/0/0.0
-)
-) inet.2: 130 destinations, 180 routes (129 active, 0 holddown, 1 hidden)
-) + = Active Route, - = Last Active, * = Both
-)
-) x.y.0.0/16     *[BGP/170] 5d 02:15:43, MED 0, localpref 50, from 172.31.5.198
-)                       AS path: 65300 I
-)                     > to a.b.c.1 via fe-0/3/1.0
-)                       to a.b.c.25 via fe-0/3/3.0
-)
-) blah at foo> show multicast rpf x.y.0.0
-) Multicast RPF table: inet.0, 153 entries
-)
-) x.y.0.0/16
-)     Protocol: BGP
-)     Interface: ge-1/0/0.0
-) --8<--
-)
-) --
-) Pekka Savola                 "You each name yourselves king, yet the
-) Netcore Oy                    kingdom bleeds."
-) Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings
-)
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-)