Create an IPv4 MRoute
Table of Contents
Create an IPv4 MRoute
Create an mroute for IPv4 multicast on a logical router.
The Advanced Routing Engine allows you to Configure IPv4 Multicast routing for
a logical router. Recall that PIM checks whether the firewall received
the packets on the same interface that the firewall uses to send
unicast packets back to the source, by checking the unicast RIB.
In
a topology where you want unicast packets to take a different route
from multicast packets, you can configure an mroute. An mroute is
static unicast route that points to a multicast source; the mroute
is stored in the multicast RIB (MRIB). PIM uses the mroute for the
RPF checks, rather than using the unicast RIB for RPF checks. Whether
PIM uses the MRIB or URIB for RPF checking depends on the RPF lookup
mode configured for PIM. During RPF checks, the mroute used is the
one with the longest prefix match.
An mroute is useful, for
example, when some devices along the path do not support multicast
routing, so a tunnel is used to connect multicast routers.
- Configure a Logical Router.
- Select and select a logical router.
- Select Multicast and enable multicast protocol.
- Create an mroute.
- Select Static and Add an
mroute by Name. The name must start with
an alphanumeric character, underscore (_), or hyphen (-), and contain
zero or more alphanumeric characters, underscore, or hyphen. No
dot (.) or space is allowed.
![]()
- Enter the Destination (IPv4 Address/Mask or address object) of the mroute, which is the multicast source or subnet to which the firewall performs an RPF check.
- Select the egress Interface for the unicast route to the multicast source.
- Enter the IPv4 address (or address object) of the Next Hop router toward the source.
- Enter a Preference for the route; range is 1 to 255.
- Click OK.
- Select Static and Add an
mroute by Name. The name must start with
an alphanumeric character, underscore (_), or hyphen (-), and contain
zero or more alphanumeric characters, underscore, or hyphen. No
dot (.) or space is allowed.
- Click OK.
- Commit your changes.
