Dvmrp Tunnels; Platform Considerations; Module Requirements; Erx7Xx Models, Erx14Xx Models, And The Erx310 Router - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - IP SERVICES CONFIGURATION GUIDE 2010-10-01 Configuration Manual

JunosE 11.3.x IP Services Configuration Guide

DVMRP Tunnels

Platform Considerations

Module Requirements

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the packet requires more processing than an IP packet, and GRE can be slower than
native routing protocols.
GRE tunnels can be secured with IPSec. See "Securing L2TP and IP Tunnels with IPSec"
on page 275.
DVMRP tunnels allow the exchange of IP multicast traffic between routers separated
by networks that do not support multicast routing. For information about DVMRP, see
Configuring IPv4 Multicast in JunosE Multicast Routing Configuration Guide.
DVMRP tunnels can be secured with IPSec. See "Securing L2TP and IP Tunnels with
IPSec" on page 275.
For information about modules that support IP tunnels on the ERX7xx models, ERX14xx
models, and the ERX310 Broadband Services Router:
See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about the
modules that support IP tunnels.
For information about modules that support IP tunnels on the E120 and E320 Broadband
Services Routers:
See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module
specifications.
See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support IP tunnels.
The supported modules for creating IP tunnels depends on the type of E Series router
that you have.

ERX7xx Models, ERX14xx Models, and the ERX310 Router

To create IP tunnels on an ERX7xx model, ERX14xx model, or an ERX310 router, you must
install a Service line module (SM) or a module that supports the use of shared
tunnel-server ports. For information about installing modules in the ERX routers, see the
ERX Hardware Guide.
SMs provide dedicated tunnel-server ports that are always configured on the module.
Unlike other line modules, SMs do not pair with corresponding I/O modules that contain
ingress and egress ports. Instead, they receive data from and transmit data to other line
modules with access to ingress and egress ports on their own associated I/O modules.
However, you must assign interfaces on other line modules or loopback interfaces to act
as source endpoints for the tunnel.
Copyright © 2010, Juniper Networks, Inc.