GitHub - ramanbuttar/network-router: Network Router written entirely in C

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Network Router written entirely in C

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Name		Name	Last commit message	Last commit date
Latest commit History 1 Commit
Makefile		Makefile
README.txt		README.txt
rtable		rtable
sr_dumper.c		sr_dumper.c
sr_dumper.h		sr_dumper.h
sr_if.c		sr_if.c
sr_if.h		sr_if.h
sr_main.c		sr_main.c
sr_protocol.h		sr_protocol.h
sr_router.c		sr_router.c
sr_router.h		sr_router.h
sr_rt.c		sr_rt.c
sr_rt.h		sr_rt.h
sr_vns_comm.c		sr_vns_comm.c
vnscommand.h		vnscommand.h

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1. Group Members:
   Craig Kost - ckost
   Raman Buttar - rsbuttar

2. Work Division
   - Extensive use of Pair Programming
   - Data Structures (Packet Queue, ARP Cache) by Craig Kost
   - Protocol Structures (ICMP) by Raman Buttar

3. Known Problems:
   - Packet dropped once in a while when an ARP request is received from VNS server or firewall
   - Problems with the following ICMP messages:
       - ECHO reply for TRACEROUTE when the destination is one of the Router Interfaces (implemented not expected behavior but responding)
       - Host unreachable after sending ARP Request for 5 times (implemented but cannot test it)
       - Host Port unreachable if a TCP/UDP packet is destined for one of Router Interfaces (implemented but cannot test it as Firefox and IE do not display appropriate message)

4. Code Design
   - Use of modularized methods to handle received packet
   - Use of LinkedList data structure to implement Packet Queue and ARP Cache
   - Use of structs to read Ethernet, ARP, ICMP, IP Header data