NLSR

## Configuration File Format

NLSR is configured using an [INFO file](http://www.boost.org/doc/libs/1_42_0/doc/html/boost_propertytree/parsers.html#boost_propertytree.parsers.info_parser).

## Example configuration

    ; the router section contains the setting of network, site name 

    ; and router name which all together makes router-prefix

    router

    {

    ; mandatory configuration command

    ; router prefix consist of three components: network name, site name and router name

    ; for below example network part is /ndn, site name part is /memphis.edu and router

    ; name part is /cs/pollux makes up the router prefix /ndn/memphis.edu/cs/pollux

        router-prefix

        {

            name /ndn/memphis.edu/cs/pollux     ; name prefix of the router in ndn URI format

        }

    }

    ; the hello section describes the configuration settings for NLSR hello protocol

    hello

    {

    ; ndnneighbor command is used to configure router's neighbor. Each neighbor will need

    ; one block of neighbor command

       ndnneighbor

       {

           name /ndn/memphis.edu/cs/castor ; name prefix of the neighbor router consists

                                           ; of network, site-name and router-name

           host cs.castor.memphis.edu      ; hostname or ip address of neighbor router

           link-cost 20.6                  ; cost of the connecting link to neighbor

       }

    ; interest-retry command is used to configure the interval of hello interest and number

    ; of retry interests before a router gives up in case of interest timed out

       interest-retry

       {

           number    3      ; interest retry number in integer. Default value 3

                            ; valid values 1-10

           interval  10     ; interest sending interval in seconds. Default value 1

                            ; valid values 1-15

       }

    }

    ; the synchronization section contains all the configuration settings for router's update

    ; synchronization with neighbors in the network

    synchronization

    {

    ; all routers in the network must have same sync-prefix. Routers synchronizes routing updates

    ; in this prefix across the network. This prefix is routable to each neighbor from every router

        sync-prefix

        {

            name /ndn/nlsr/sync    ; name in URI format. Default value /ndn/nlsr/sync

        }

    ; lsa-refresh-time is the time in seconds, after which router will refresh its LSAs

        lsa-refresh-time

        {

            seconds 1800           ; default value 1800. Valid values 240-7200

        }

    }

    ; the hyperbolic section contains the configuration settings of enabling a router to calculate

    ; routing table using [hyperbolic routing table calculation](http://arxiv.org/abs/0805.1266) method

    hyperbolic

    {

    ; the switch is used to set hyperbolic routing calculation in NLSR

        switch

        {

            value off          ; default value 'off', set value 'on' to enable hyperbolic routing table 

                               ; calculation which turns link state routing 'off'. set value to 'dry-run"

                               ; to test hyperbolic routing and compare with link state routing.  

        }

    ; the coordinate is used to configure the hyperbolic coordinates of the router in geometric system. This

    ; values are statically set in each router by system admin. If switch has a value of 'on' or 'dry-run'

    ; this configuration command is mandatory for the router.

       coordinate

       {

            radius   123.456   ; radius of the router in hyperbolic coordinate system

            angle    1.45      ; angle of the router in hyperbolic coordinate system

       }

    }

    ; the fib section is used to configure fib entry's type to ndn FIB updated by NLSR

    fib

    {

    ; the tunnel configuration is used to set the tunnel type of the FIB entries by NLSR

        tunnel

        {

            type udp     ; default tunnel type is 'udp', set value to 'tcp' for TCP tunnel

        }

    ; the max-faces-per-prefix is used to limit the number of faces for each name prefixes

    ; by NLSR in ndn FIB

        max-faces-per-prefix

        {

            number 3     ; default value 0. Valid value 0-60. By default (value 0) NLSR adds

                         ; all available faces for each reachable name prefixes in NDN FIB

        }

    }

    ; the advertising section contains the configuration settings of the name prefixes 

    ; hosted by this router

    advertising

    {

    ; the ndnname is used to advertised name from the router. To advertise each name prefix

    ; configure one block of ndnname configuration command for every name prefix.

        ndnname

        {

           name /ndn/edu/memphis/cs/netlab ; name in ndn URI format

        }

    }