1
Overview
16
Voyager Reference Guide
Configuring Tunnel Interfaces
Tunnel interfaces are used to encapsulate protocols inside IP packets. Use
tunneling to:
!
send network protocols over IP networks that don’t support them
!
encapsulate and encrypt private data to send over a public IP network.
Create a tunnel logical interface by specifying an encapsulation type. Use
Voyager to set the encapsulation type. Voyager supports two encapsulation
types, DVMRP and VPN.
The tunnel logical interface name has the form:
tun0c<chan>
where
<chan>
(channel number) is an instantiation identifier.
DVMRP (Distance Vector Multicast Routing
Protocol) Tunnels
DVMRP tunnels encapsulate multicast packets using IP-in-IP encapsulation.
The encapsulated packets appear as unicast IP packets. This technique allows
two multicast routers to exchange multicast packets even when they are
separated by routers that cannot forward multicast packets. For each DVMRP
tunnel you create, you must provide the IP address of the interface that forms
the local endpoint of the tunnel and the IP address of the multicast router that
is at the remote end of the tunnel forming the remote endpoint of the tunnel.
Note
The remote multicast router must support IP-in-IP encapsulation and
must be configured with a tunnel interface to the local router.
When you have created the DVMRP tunnel interface, set all other DVMRP
multicast configuration parameters from the DVMRP configuration page.
Summary of Contents for Network Voyager
Page 1: ...Voyager Reference Guide Part No N450820002 Rev A Published December 2003 ...
Page 4: ...4 Voyager Reference Guide ...
Page 30: ...2 How to Use Voyager 30 Voyager Reference Guide ...
Page 32: ...3 Command Line Utility Files 32 Voyager Reference Guide ...
Page 220: ...5 Configuring Interfaces 220 Voyager Reference Guide ...
Page 446: ...7 Configuring Traffic Management 448 Voyager Reference Guide ...
Page 618: ...10 Configuring Security and Access 620 Voyager Reference Guide ...
Page 668: ...14 Configuring IPv6 670 Voyager Reference Guide ...
Page 672: ...15 IPSO Process Management 674 Voyager Reference Guide ...
Page 700: ...Index 702 Voyager Reference Guide ...