[Xorp-users] How configure a multicast static route with xorp_sh ?

moreauf moreauf at enseirb.fr
Tue Mar 13 09:21:47 PDT 2007


After many try of the proposed solution and some variation, routing  
doesn't work if I don't activate PIM-SM too.
But I search to route multicast stream with only, a static routing  
beetween router 2 and 3,  IGMP beetween router 1 and 2 and IGMP  
beetween 3 and 4.

Thanks ,
Fabien

Le 8 mars 07 à 19:50, Pavlin Radoslavov a écrit :

> Note: in my examples below I assume all subnet mask lengths are /24.
>
>> Hello, after reading the docs, I haven't find a solution.
>>
>>
>> my configuration :
>> ----                                                       -----
>> |    |             ___                ___           |  V |
>> |    | ---------|      |-----------|      |--------|  L |
>> |    |             |__ |               |__ |           |  C |
>> ----                 2                    3              ----
>>    1
>>
>> 1. A video streamer in multicast (172.17.0.1)
>> 2. a xorp_router  (172.17.0.10 and 192.168.18.1)
>> 3. a another xorp_router (192.168.18.2 and 192.168.17.1)
>> VLC is a client to read video streaming (192.168.18.1)
>                                            ~~~~~~~~~~~~
> This address doesn't seem right. It should belong to the same subnet
> as 192.168.17.1/24 (e.g., 192.168.17.2).
effectively , I write my case with this syntax error.
>
>> I search the xorp_sh command to configure router 2 and 3 with static
>> multicast routing  .
>
> The routes you need to add are:
> (a) A route inside XORP2 how to reach the VLC subnet
>    (192.168.17.0/24).
> (b) A route inside XIRP3 how to reach the streamer's subnet
>    (172.17.0.0/24).
>
> Then the static configuration inside XORP2 will look like:
>
> protocols {
>     static {
>         route 192.168.17.0/24 {
>             next-hop: 192.168.18.2
>         }
>     }
> }
>
> Similarly, the static configuration inside XORP3 will look like:
>
> protocols {
>     static {
>         route 172.17.0.0/24 {
>             next-hop: 192.168.18.1
>         }
>     }
> }
>
> The above setup will add unicast static routes to the system. If you
> have fib2mrib configured, then they will be used for multicast
> purpose as well.
> If you want to install static routes that will be used for multicast
> purpose only, then replace "route" with "mrib-route".
>
> Regards,
> Pavlin




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