CcndKnowledge » History » Revision 4
Revision 3 (Junxiao Shi, 08/30/2014 08:34 AM) → Revision 4/5 (Junxiao Shi, 07/27/2015 08:41 AM)
# knowledge about ccnd ccnd is the original reference implementation of CCN/NDN architecture, and the only NDN forwarder that has been used with real applications. ## ccnd tables **FIB** is organized as a tree that is stored in a hashtable, and also contains runtime measurement information. **PIT** is stored in a hashtable, where each PIT entry is linked to a FIB entry. See [[CcndFibPit|ccnd [ccnd FIB and PIT data structure]] structure](https://www.dropbox.com/s/ms7hp1zgpfgvyru/ccnd-FIB-PIT_20140118.docx) for details. **ContentStore** is stored in a hashtable, and a skip list maintains a total order over all stored ContentObjects. See [[CcndContentStore|ccnd [ccnd ContentStore data structure]] structure](https://www.dropbox.com/s/0lw5pqno4wjesiv/ccnd-CS_20130703.docx) for details. ## ccnd forwarding ccnd has a default forwarding strategy, but it's not easily replaceable. See [[CcndStrategy|ccnd default strategy]]. ccnd maintains a [[CcndNonce|global Nonce table]] for loop detection.