Table of Contents
Advertisement
JunosE 11.3.x IP Services Configuration Guide
Data MDT for Multicast VPNs and Dynamic IP Tunnels
Mobile IP and Dynamic IP Tunnels
252
The data multicast distribution tree (MDT) application for multicast VPNs can create
dynamic point-to-multipoint GRE tunnels.
The data MDT application enables you to solve the problem of IP routers flooding
unnecessary multicast information to PE routers that have no interested receivers for a
particular VPN multicast group. The multicast data MDT solution requires the creation
of a new dynamic IP tunnel by the PE router if the source exceeds a configured rate
threshold parameter.
The data MDT application supports a co-located tunnel interface. The base GRE interface
and its co-located data MDT interface must be both static or both dynamic.
The data MDT application creates a dynamic IP tunnel using the attributes in a customized
destination profile.
When creating the dynamic IP tunnel, the data MDT application assigns its name using
the following format:
mvpn-dynamic-number
For the data MDT application, you should configure a customized destination profile. For
information about configuring multicast VPNs using GRE tunnels, see Configuring PIM
for IPv4 Multicast in JunosE Multicast Routing Configuration Guide.
The Mobile IP application can create dynamic point-to-point GRE and DVMRP tunnels.
The Mobile IP application is a tunneling-based solution that enhances the utility of E Series
Broadband Services Routers at the edge of the network between fixed wire and wireless
network domains. This tunneling-based solution enables a router on a user's home subnet
to intercept and forward IP packets to users while they roam beyond traditional network
boundaries.
To achieve mobility, the mobile node takes a secondary IP address that matches the
new network and redirects the traffic bound to the primary or home address to the mobile
node's new network. In the Mobile IP feature, the two agents that accomplish this task
are the home agent and the foreign agent.
The Mobile IP application can create a dynamic IP tunnel using the attributes in a default
destination profile or a customized destination profile.
When creating the dynamic IP tunnel, the Mobile IP application assigns its name using
the following format:
mobileIp-dynamic-number
When the Mobile IP application creates the dynamic IP tunnel, it sets a Don't Fragment
bit in the packet and in the outer IP header.
The Mobile IP home agent uses the dynamic IP tunnel for routing loop detection. The
home agent examines packets that are intercepted by the home agent and destined for
Copyright © 2010, Juniper Networks, Inc.
Advertisement
Table of Contents
