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تشریح قالب جدید خروجی NS2

شروع موضوع توسط AdMiN ‏1/1/14 در انجمن شبیه ساز NS

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  1. Administrator
    AdMiN
    هیات مدیره
    تاریخ عضویت:
    ‏3/10/13
    ارسال ها:
    2,259
    تشکر شده:
    325
    The new trace format as seen above can be can be divided into the following fields
    Event type
    In the traces above, the first field (as in the older trace format) describes the type of event taking place at the node and can be one of the four types
    s
    send
    r
    receive
    d
    drop
    f
    forward
    General tag
    The second field starting with "t" may stand for time or global setting
    t
    time
    t
    * (global setting)
    Node property tags
    This field denotes the node properties like nodeid, the level at which tracing is being done like agent, router or MAC. The tags start with a leading "N" and are listed as below
    Ni
    node id
    Nx
    node's xcoordinate
    Ny
    node's ycoordinate
    Nz
    node's zcoordinate
    Ne
    node energy level
    Nl
    trace level, such as AGT, RTR, MAC
    Nw
    reason for the event. The different reasons for dropping a packet are given below
    "END"
    DROP_END_OF_SIMULATION
    "COL"
    DROP_MAC_COLLISION
    "DUP"
    DROP_MAC_DUPLICATE
    "ERR"
    DROP_MAC_PACKET_ERROR
    "RET"
    DROP_MAC_RETRY_COUNT_EXCEEDED
    "STA"
    DROP_MAC_INVALID_STATE
    "BSY"
    DROP_MAC_BUSY
    "NRTE"
    DROP_RTR_NO_ROUTE i.e no route is available.
    "LOOP"
    DROP_RTR_ROUTE_LOOP i.e there is a routing loop
    "TTL"
    DROP_RTR_TTL i.e TTL has reached zero.
    "TOUT"
    DROP_RTR_QTIMEOUT i.e packet has expired.
    "CBK"
    DROP_RTR_MAC_CALLBACK
    "IFQ"
    DROP_IFQ_QFULL i.e no buffer space in IFQ.
    "ARP"
    DROP_IFQ_ARP_FULL i.e dropped by ARP
    "OUT"
    DROP_OUTSIDE_SUBNET i.e dropped by base stations on receiving routing updates from nodes outside its domain.
    Packet information at IP level
    The tags for this field start with a leading "I" and are listed along with their explanations as following
    Is
    source address.source port number
    Id
    dest address.dest port number
    It
    packet type
    Il
    packet size
    If
    flow id
    Ii
    unique id
    Iv
    ttl value
    Next hop info
    This field provides next hop info and the tag starts with a leading "H".
    Hs
    id for this node
    Hd
    id for next hop towards the destination.
    Packet info at MAC level
    This field gives MAC layer information and starts with a leading "M" as shown below
    Ma
    duration
    Md
    dst's ethernet address
    Ms
    src's ethernet address
    Mt
    ethernet type
    Packet info at "Application level"
    The packet information at application level consists of the type of application like ARP, TCP, the type of adhoc routing protocol like PUMA, DSR, AODV etc being traced. This field consists of a leading "P" and list of tags for different application is listed as below
    P arp
    Address Resolution Protocol. Details for ARP is given by the following tags
    Po
    ARP Request/Reply
    Pm
    src mac address
    Ps
    src address
    Pa
    dst mac address
    Pd
    dst address
    P dsr
    This denotes the adhoc routing protocol called Dynamic source routing. Information on DSR is represented by the following tags
    Pn
    how many nodes traversed
    Pq
    routing request flag
    Pi
    route request sequence number
    Pp
    routing reply flag
    Pl
    reply length
    Pe
    src of srcrouting>dst of the source routing
    Pw
    error report flag ?
    Pm
    number of errors
    Pc
    report to whom
    Pb
    link error from linka>linkb
    P cbr
    Constant bit rate. Information about the CBR application is represented by the following tags
    Pi
    sequence number
    Pf
    how many times this pkt was forwarded
    Po
    optimal number of forwards
    P tcp
    Information about TCP flow is given by the following subtags
    Ps
    seq number
    Pa
    ack number
    Pf
    how many times this pkt was forwarded
    Po
    optimal number of forwards
    This field is still under development and new tags shall be added for other applications as they get included along the way.​
     
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