Wiki » History » Version 4
A K M Mahmudul Hoque, 04/03/2014 11:21 AM
1 | 1 | A K M Mahmudul Hoque | # Named-data Link State Routing(NLSR) |
---|---|---|---|
2 | |||
3 | **Named-data Link State Routing (NLSR)** is routing for NDN under development. |
||
4 | |||
5 | NLSR's development is going on top of |
||
6 | |||
7 | * [**ndn-cpp-dev**](https://github.com/named-data/ndn-cpp-dev) |
||
8 | * [**NFD**](http://redmine.named-data.net/projects/nfd/wiki) |
||
9 | * [**ChronoSync**](https://github.com/bruinfish/ChronoSync) |
||
10 | |||
11 | ### UML of NLSR is available at [**NLSR-UML**](http://irl.cs.ucla.edu/~cawka/nlsr/) |
||
12 | |||
13 | |||
14 | ## NLSR's design |
||
15 | |||
16 | Conceptually NLSR is divided into four modules |
||
17 | |||
18 | 1. Core |
||
19 | 2. Communication |
||
20 | 3. Routing |
||
21 | 4. Security |
||
22 | |||
23 | ### 1. Core Module |
||
24 | - Read and parse configuration file |
||
25 | - Stores all configurable parameter values |
||
26 | - Stores Adjacent in Adjacency list |
||
27 | - Stores advertising names in name prefix list |
||
28 | - Stores Link State Advertisement (LSA) in Link State Database (LSDB) |
||
29 | 2 | A K M Mahmudul Hoque | |
30 | ### 2. Communication Module |
||
31 | - Handles synchronization logic of NLSR's LSDB updates |
||
32 | - Publish LSDB updates in router name |
||
33 | - Upon update notification send interest for LSAs |
||
34 | - Publish certificates updates |
||
35 | - Send interest to fetch certificates |
||
36 | - Processes all inbound/outbound interest/data of NLSR |
||
37 | 3 | A K M Mahmudul Hoque | |
38 | ### 3. Routing Module |
||
39 | - Calculate routing table ( depending configuration use link - state routing calculator or Hyperbolic routing calculator) |
||
40 | - Stores routing table |
||
41 | - Creates and store Name prefix table ( Name prefix table entry is Name Prefix with nexthops list to reach that name) |
||
42 | |||
43 | 4 | A K M Mahmudul Hoque | ### 4. Security Module ( This module will no longer be available later when NLSR will use NFD's rule based validator) |
44 | 3 | A K M Mahmudul Hoque | - Fetch, validate and stores certificate in Certificate Store |
45 | - If some certificate is fetched but waiting to be validated is recorded in waiting list |
||
46 | - After validation it is added in the certificate store otherwise discarded |
||
47 | - Validate each piece of data received by NLSR |
||
48 | - Sign data using router process keys before sending out |