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Configuring DVMRP Configuring DVMRP
page 6-10 OmniSwitch 6800/6850/9000 Advanced Routing Configuration Guide December 2007
Configuring DVMRP
Before configuring DVMRP, consider the following:
• The advanced routing image must be present in the switch’s current running directory (i.e., Working or
Certified) before DVMRP can be enabled or configured.
• DVMRP requires that IP Multicast Switching (IPMS) is enabled. IPMS is automatically enabled when
a multicast routing protocol (either PIM-SM or DVMRP) is enabled globally and on an interface and
when the operational status of the interface is up. However, if you wish to manually enable IPMS on
the switch, use the ip multicast status command.
• You can configure DVMRP parameters when the protocol is not running as long as DVMRP is loaded
into memory (see “Loading DVMRP into Memory” below).
• The DVMRP parameters will not take effect until the protocol is enabled globally and on specific IP
interfaces.
Enabling DVMRP on the Switch
By default, the DVMRP protocol is disabled on the switch. Before running DVMRP, you must enable the
protocol by completing the following steps:
• Loading DVMRP into memory
• Enabling DVMRP on desired IP interfaces
• Enabling DVMRP globally on the switch
Note. Once loaded and enabled, DVMRP is typically ready to use because its factory default values are
appropriate for the majority of installations. Note, however, if neighbors in the DVMRP domain have
difficulty handling large initial bursts of traffic, it is recommended that the subordinate neighbor status is
changed to false. For more information on the subordinate neighbor status, refer to the ip dvmrp subord-
default command in the OmniSwitch CLI Reference Guide.
For information on completing these steps, refer to the sections below.
Loading DVMRP into Memory
You must load DVMRP into memory before you can begin configuring the protocol on the switch. If
DVMRP is not loaded and you enter a configuration command, the following message displays:
ERROR: The specified application is not loaded
To dynamically load DVMRP into memory, enter the following command:
-> ip load dvmrp