Cisco 7604 Configuration Manual page 386

Configuring MVPN
When configuring the default MDT, note the following information:
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This example shows how to configure 239.1.1.1 as the default MDT:
Router(config-vrf)# mdt default 239.1.1.1
Configuring Data MDTs (Optional)
To configure optional data MDTs, perform this task:
Command or Action
Router(config-vrf)# mdt data group_address
wildcard_bits [threshold threshold_value ] [list
access_list ]
Router(config-vrf)# no mdt data
When configuring optional data MDTs, note the following information:
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This example shows how to configure a data MDT:
Router(config-vrf)# mdt data 239.1.2.0 0.0.0.3 threshold 10
Enabling Data MDT Logging
To enable data MDT logging, perform this task:
Command or Action
Router(config-vrf)# mdt log-reuse
Router(config-vrf)# no log-reuse
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
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The group_address is the multicast IPv4 address of the default MDT group. This address serves as
an identifier for the MVRF community, because all provider-edge (PE) routers configured with this
same group address become members of the group, which allows them to receive the PIM control
messages and multicast traffic that are sent by other members of the group.
This same default MDT must be configured on each PE router to enable the PE routers to receive
multicast traffic for this particular MVRF.
group_address1—Multicast group address. The address can range from 224.0.0.1 to
239.255.255.255, but cannot overlap the address that has been assigned to the default MDT.
wildcard_bits—Wildcard bitmask to be applied to the multicast group address to create a range of
possible addresses. This allows you to limit the maximum number of data MDTs that each MVRF
can support.
threshold threshold_value—(Optional) Defines the threshold value in kilobits, at which multicast
traffic should be switched from the default MDT to the data MDT. The threshold_value parameter
can range from 1 through 4294967 kilobits.
list access_list—(Optional) Specifies an access list name or number to be applied to this traffic.
Chapter 25
Purpose
(Optional) Configures a data MDTs for the specified range of
multicast addresses.
Deletes the data MDT.
Purpose
(Optional) Enables the recording of data MDT reuse
information, by generating a SYSLOG message whenever a
data MDT is reused. Frequent reuse of a data MDT might
indicate a need to increase the number of allowable data
MDTs by increasing the size of the wildcard bitmask that is
used in the mdt data command.
Disables data MDT logging.
Configuring IPv4 Multicast VPN Support
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