TODO.txt

2015-10-20 22:12:14
done ) load components
done ) drag & drop

2015-10-21 14:46:45
done ) move in scene
done ) delete
done ) connect two computers (graphically)
done ) link follows when node moves

2015-10-21 17:11:09
) persistence
) NIC(Network Interface Controller)

2015-10-22 20:46:09
) auto link type selection based on port type
    no need to press "link" button in toolbox first

2015-10-27 21:39:48
) layer2 - transmission errors
    flip, less/equal/more than trasmitted
) layer2 - flow control (fast senders & slow receivers)
) layer2 - maximum frame length (p196)
    https://en.wikipedia.org/wiki/Ethernet_frame
    Ethernet MTU of 1500B

) 演示物理层传输错误
    左右两侧小电脑屏幕，左边是待传输的数据，右边是接收到的数据
    数据都是二进制的 011100101 这种
    点击“开始传输”后，左侧的01串开始向右移动，线路上出现信号动画
    然后右边屏幕中从左侧开始挤入接收到的01串
    有三种错误情况：
        1) bit flip
        2) bit missing
        3) bit insertion
    所以两边屏幕中01串的移动并不一定同步——flip或正常情况下是同步的
    但是当missing时就会出现左侧移动了而右侧没动
    当insertion时，左侧动一个bit时右侧加速动了2个(或多个)bit

2015-10-28 18:54:43
) unacknowledged connection-less transmission
) acknowledged connection-less transmission
) acknowledged connection-oriented transmission

) corrupted frame
) missing frame & missing acknowledgement
    may due to bit flip in flag bytes
) timer for retransmission

2015-10-26 20:30:43
) p91 PSTN - public switched telephone network

2015-11-05 08:15:59
) asynchronous serial communication (bytes)
    http://www.sangoma.com/tutorials/sync_n_async/
    currently we have implemented the synchronous serial comm.. (bits)

2015-11-05 09:48:24
) make mint network capable of multiple runs

2015-11-15 08:34:02
) analyze performance under different parameters using piggybacking
    p228 sliding control window

2015-11-15 21:43:07
) go back n & selective repeat (p242)

2015-11-16 14:28:15
) checksum to detect collided frames
) ALOHA
) 1-persistent CSMA
) nonpersistent CSMA
) p-persistent CSMA
) CSMA/CD

2015-11-16 17:55:16
) [proj] difference between switch network & router network
    (see log.txt 2015-11-16 17:55:24)

2015-11-17 23:37:33
) switch
) switch spanning tree negotiation

) [proj] difference between hub network & switch network

2015-11-18 09:11:06
) VLAN / 802.1q
) [proj] VLAN aware portion of a network

2015-11-19 15:38:08
) SNMP
    https://learningnetwork.cisco.com/thread/15380
    https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol

) ARP
    host 发送 frame 之前，需要ARP来得到目的MAC地址

) STP
    https://en.wikipedia.org/wiki/Spanning_Tree_Protocol
    
) NAT

) CIDR (RFC 4632)