User guide

Configuring a Multicast Border Router Configuring a Multicast Border Router
page 8-6 OmniSwitch AOS Release 7 Advanced Routing Configuration Guide March 2015
MBR All Sources Status = disabled,
MBR Operational Status = enabled
Configuring DVMRP Default Route Advertisement
Advertising a default route on a DVMRP interface on the MBR provides a method for ensuring that
sources inside the PIM domain can reach all routers inside the DVMRP domain. To enable default route
advertisement for a specific DVMRP interface, use the ip dvmrp interface mbr-default-information
command. For example:
-> ip dvmrp interface mbr-default-information enable
When enabling this type of advertisement, make sure that the default route is not advertised on the
MBONE.
To disable the default route advertisement, use the ip dvmrp interface mbr-default-information command
with the disable option. For example:
-> ip dvmrp interface mbr-default-information disable
Use the show ip dvmrp interface command to verify whether or not a DVMRP is advertising a default
route. For example:
-> show ip dvmrp interface
Total 4 Interfaces
Interface Name Vlan Metric Admin-Status Oper-Status BFD-Status MBR-Default
----------------+-----+------+-------------+-------------+----------+-----------
vlan-4 4 1 Disabled Disabled Disabled Disabled
vlan-6 6 1 Enabled Enabled Disabled Enabled
CLI Configuration Example
As previously described in this chapter, configuring an OmniSwitch to operate as a multicast border router
(MBR) requires configuring PIM and DVMRP first then enabling MBR functionality. This section
provides three sample configurations for configuring an OmniSwitch MBR, including commands used for
PIM and DVMRP.
Example 1: Default MBR Protocol Configuration
In this example, the switch is configured to act as an MBR but with default MBR settings. PIM will only
notify DVMRP about the routes to directly connected subnets and not the routes to all sources. DVMRP
will not advertise the default route on any of the DVMRP interfaces.
-> ip load pim
-> ip pim interface "vlan-2"
-> ip pim interface "vlan-3"
-> ip pim dense group 225.0.0.0/24
-> ip pim dense admin-state enable
-> ip load dvmrp
-> ip dvmrp interface "vlan-4"
-> ip dvmrp interface "vlan-6"
-> ip dvmrp admin-state enable
-> ip mroute mbr admin-state enable