Named Data Networking Link Protocol

NDNLP is a link protocol for delivering CCNx messages over a local one-hop link.

NDNLP provides the following two features:

• Fragmentation and Reassembly
• Acknowledgement and Retransmission

ndnld is an implementation of NDNLP.

Read NDN Technical Report NDN-0006 for more details.

SYSTEM REQUIREMENTS

CCNx

ndnld has been tested with CCNx 0.6.2.

Linux

ndnld has been tested with Ubuntu 12.04.

• CUnit is required to run unit tests.

FreeBSD

ndnld has been tested with FreeBSD 9.

• Unit tests do not compile on FreeBSD.
• UDP lower-layer with IPv6 addresses is always available.
• UDP lower-layer with IPv4 addresses is available when ipv6_ipv4mapping="YES" is specified in /etc/rc.conf.
• Ethernet lower-layer is not supported due to lack of AF_PACKET.

Mac OS

ndnld compiles on Mac OS X 10.6.8, but its functionality is not fully tested.

USAGE

Install

make
sudo make install

On FreeBSD if you plan to use UDP lower-layer with IPv4 addresses, add ipv6_ipv4mapping="YES" to /etc/rc.conf, and reboot the machine.

Start

ccndstart
ndnld

The program will daemonize itself.

Stop

killall ndnld

Uninstall

sudo make uninstall

CONFIGURATION

ndnldc is a command-line utility to configure ndnld.

ndnldc should be called after starting ndnld. Configuration does not persist after ndnld is restarted.

Create UDP Connection

Commands to create a UDP connection between r1 (192.0.2.1) and r2 (192.0.2.2):

ndn@r1:~$ ndnldc -c -p udp -h 192.0.2.2
ndn@r2:~$ ndnldc -c -p udp -h 192.0.2.1

FaceID will be echoed back.

Create Ethernet Connection

Commands to create a Ethernet connection between r1 (eth1, 08:00:27:01:01:01) and r2 (eth2, 08:00:27:01:01:02):

ndn@r1:~$ ndnldc -c -p ether -h 08:00:27:01:01:02 -i eth1
ndn@r2:~$ ndnldc -c -p ether -h 08:00:27:01:01:01 -i eth2

FaceID will be echoed back.

Register a Prefix

Commands to register a prefix on FaceID 11:

ndn@r1:~$ ndnldc -r -f 11 -n ccnx:/example

Other Commands

Please read section 3.4 of technical report.