[qpimd-users] Static Multicast Routing with qpimd

[Everton Marques]

For the records.

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qpimd doesn't provide commands for static multicast routes.

However I think it is possible to obtain a similar behavior with
static igmp joins. Please see the example below.

Example for:
- Mcast source: 1.1.1.1
- Mcast group: 239.1.1.1
- Input interface: eth0
- Ouput interface list: eth1, eth2

Step 1: Add unicast route to source (1.1.1.1)

Since qpimd relies on correct unicast routing to the
source address, add a unicast route to 1.1.1.1 towards
eth0, either statically (route add, ip route add) or by using
a dynamic routing protocol (e.g. zebra and ospfd).

Step 2: Add static igmp join to (1.1.1.1,239.1.1.1) on every output interface

!
! qpimd.conf:
!
interface eth0
 ip pim ssm
interface eth1
 ip pim ssm
 ip igmp
 ip igmp join-group 239.1.1.1 source 1.1.1.1
interface eth2
 ip pim ssm
 ip igmp
 ip igmp join-group 239.1.1.1 source 1.1.1.1